CN210085388U - Carbon emission reduction system of thermal power plant - Google Patents
Carbon emission reduction system of thermal power plant Download PDFInfo
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- CN210085388U CN210085388U CN201822249432.2U CN201822249432U CN210085388U CN 210085388 U CN210085388 U CN 210085388U CN 201822249432 U CN201822249432 U CN 201822249432U CN 210085388 U CN210085388 U CN 210085388U
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1606—Combustion processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Gasification And Melting Of Waste (AREA)
- Industrial Gases (AREA)
Abstract
The utility model discloses a thermal power plant carbon emission reduction system, which comprises a thermal power plant boiler (1), a steam turbine (2) and a generator device (3), wherein the thermal power plant boiler (1) is connected with the steam turbine (2), and the steam turbine (2) is connected with the generator device (3); thermal power plant carbon emission reduction system still includes pyrolysis gasification device (4), pyrolysis gas air supply pipeline (5) and many fuel combustor (6), and many fuel combustor (6) set up on thermal power plant boiler (1), and pyrolysis gasification device (4) are connected with many fuel combustor (6) through pyrolysis gas air supply pipeline (5), pyrolysis gasification device (4) can be with arbitrary pyrolysis in coal, living beings, rubbish, the mud fuel for pyrolysis gas, supply thermal power plant boiler (1) and mix the burning.
Description
Technical Field
The utility model relates to a thermal power plant carbon emission reduction field, specificly relate to a thermal power plant carbon emission reduction system.
Background
The global warming and the climate change, the emission reduction task promised by the Chinese government and the carbon emission intensity of the coal-fired thermal power units of five electric power groups in China all put forward specific requirements in thirteen-five energy planning, namely the average carbon emission intensity of the coal-fired thermal power units of five electric power groups is less than 550kgCO2/kWh by 2020. In the future, the coal-fired power plants need to maintain annual power generation load by purchasing green certificates or carbon indexes, or need to perform fuel flexibility transformation to become thermal power plants with low carbon emission intensity.
The coal-fired thermal power plant is a large carbon emission household, how to reduce the carbon emission intensity of the large coal-fired thermal power plant is a great obstacle in the future of the thermal power industry, and if the carbon emission cannot be reduced, many large thermal power plants will face the situations of shutdown and loss after 2020. Domestic patent 201810673269.4 discloses a polygeneration peak shaving power station system, which utilizes the gasified coal to support combustion when the power supply plant boiler is under low load, the flexibility of peak shaving power generation is greatly improved, the fuel cost is not increased, and simultaneously, a gasification furnace device with a tar production function and a dry distillation tank with a tar and semicoke production function are adopted, and byproducts tar and semicoke with higher added values can be obtained. The patent only introduces the technology that a coal gasification furnace is matched with a thermal power plant boiler to realize low-load combustion supporting of the boiler, does not relate to any scheme that biomass or garbage is gasified and matched with the power plant boiler, and does not provide the calculation of carbon emission reduction of coal gas instead of coal. Domestic patent 201720943001.9 discloses a peak shaving power generation system of thermal power plant, can be with the hydrogen that the brineelectrolysis module generated and the living beings gas that living beings gas pyrolysis gasifier generated, and will two kinds of gases mix, form the synthetic gas to supply the boiler of thermal power plant, thereby realize that the boiler of thermal power plant surely fires and peak shaving. The system of the patent is complex, the pyrolysis fuel of the gasification furnace is only biomass, and the contents of related calculation of coal gas or garbage gas production and boiler carbon emission reduction are not involved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a thermal power plant's carbon emission reduction system utilizes pyrolysis gasification equipment, and it replaces the fire coal to become combustible pyrolysis gas with coal, living beings, rubbish or mud pyrolysis gasification to realize thermal power plant's carbon emission reduction.
Specifically, the utility model discloses a realize through following technical scheme:
a carbon emission reduction system of a thermal power plant comprises a boiler of the thermal power plant, a steam turbine and generator equipment, wherein the boiler of the thermal power plant is connected with the steam turbine, and the steam turbine is connected with the generator equipment; the thermal power plant carbon emission reduction system further comprises a pyrolysis gasification device, a pyrolysis gas supply pipeline and a multi-fuel burner, wherein the multi-fuel burner is arranged on a thermal power plant boiler, the pyrolysis gasification device is connected with the multi-fuel burner through the pyrolysis gas supply pipeline, and the pyrolysis gasification device can pyrolyze any one of coal, biomass, garbage and sludge fuel into pyrolysis gas which is supplied to the thermal power plant boiler for mixed combustion; the thermal power plant carbon emission reduction system further comprises a garbage storage pit, wherein the garbage storage pit is used for storing garbage, so that the garbage is accumulated and percolated in the garbage storage pit; the thermal power plant carbon emission reduction system further comprises a grab bucket, and the grab bucket is used for grabbing and conveying the garbage in the garbage storage pit to the pyrolysis gasification device.
Preferably, the pyrolysis gas supply pipeline connects the pyrolysis gasification device with a gas supply combustion gun gas inlet pipe of a multi-fuel burner arranged on a boiler of a thermal power plant.
Preferably, a valve is further arranged on an air inlet pipe of an air supply combustion gun of the multi-fuel combustor, and the valve arranged on the air inlet pipe of the air supply combustion gun can control the amount of pyrolysis gas supplied to the thermal power plant boiler for mixed combustion.
Preferably, the pyrolysis gasification device comprises a feed inlet, a discharge outlet and a pyrolysis gas outlet, and the pyrolysis gas outlet is connected with the pyrolysis gas supply pipeline.
Preferably, the grab bucket is used for grabbing and conveying the garbage in the garbage storage pit to a feeding hole of the pyrolysis gasification device; and an exhaust gas treatment device is arranged on the exhaust gas outlet of the thermal power plant boiler.
Preferably, the waste gas treatment device comprises a flue gas treatment device, an active carbon adsorption device and a dust remover, and the flue gas treatment device, the active carbon adsorption device and the dust remover are sequentially connected.
Preferably, the pyrolysis gasification device comprises a drying device, a pyrolysis gasification chamber and a secondary combustion chamber, wherein the drying device is connected with a feeding hole of the pyrolysis gasification device and is used for receiving garbage thrown from the feeding hole and drying the garbage; the drying device is connected with the pyrolysis gasification chamber, and the pyrolysis gasification chamber is used for receiving the dried garbage conveyed from the drying device and carrying out pyrolysis gasification; the pyrolysis gasification chamber is also respectively connected with a pyrolysis gas outlet and a secondary combustion chamber, and is used for conveying combustible pyrolysis gas and flue gas to the pyrolysis gas outlet and conveying pyrolyzed substances to the secondary combustion chamber for further combustion to generate ash; the second combustion chamber is connected with a discharge port of the pyrolysis gasification device and used for discharging ash to the discharge port.
Preferably, the waste gas treatment device further comprises an air preheater, and the air preheater is connected between the flue gas treatment device and the activated carbon adsorption device; the air preheater is also respectively connected with the boiler and the secondary combustion chamber of the thermal power plant and is used for respectively introducing hot air generated in the air preheater into the boiler and the secondary combustion chamber of the thermal power plant.
Preferably, the garbage storage pit is further connected with an air preheater, and negative pressure deodorizing gas generated in the garbage storage pit can be introduced into the air preheater to deodorize waste gas flowing through the air preheater.
Preferably, the thermal power plant carbon emission reduction system further comprises a leachate tank, wherein the leachate tank is connected with the garbage storage pit on one hand and is connected with the thermal power plant boiler on the other hand, so that leachate in the garbage storage pit can flow into the leachate tank, and the leachate in the leachate tank can be introduced into the thermal power plant boiler.
The utility model has the advantages that: (1) a pyrolysis gasification device is arranged in a thermal power plant to pyrolyze coal, biomass, garbage or sludge, obtain pyrolysis gas and send the pyrolysis gas into a power station boiler to support combustion, and help the power station boiler to stably burn at low load; (2) pyrolysis gas replaces fire coal, and the carbon emission intensity of a power station boiler is reduced; (3) the thermal power plant obtains extra treatment cost by treating the garbage or the sludge, and the economic benefit of the power plant is increased; (4) the semi coke obtained by pyrolyzing coal in a thermal power plant is sold externally, and the economic benefit of the power plant can be increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a carbon emission reduction system of a thermal power plant according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a pyrolysis gasification device provided in an eighth embodiment of the present invention;
FIG. 3 is a schematic structural view of a pyrolysis gasification apparatus according to a ninth embodiment of the present invention;
fig. 4 is a schematic structural view of a pyrolysis gasification apparatus provided in the tenth embodiment of the present invention;
FIG. 5 is a schematic structural view of a pyrolysis gasification apparatus provided in the eleventh embodiment of the present invention;
fig. 6 is a schematic structural view of a pyrolysis gasification apparatus according to a twelfth embodiment of the present invention;
fig. 7 is a schematic structural diagram of a carbon emission reduction system of a thermal power plant according to a thirteenth embodiment of the present invention;
fig. 8 is a schematic structural diagram of a carbon emission reduction system of a thermal power plant according to a fourteenth embodiment of the present invention;
fig. 9 is a schematic structural diagram of a carbon emission reduction system of a thermal power plant according to a fifteenth embodiment of the present invention;
fig. 10 is a schematic structural diagram of a carbon emission reduction system of a thermal power plant according to a sixteenth embodiment of the present invention;
fig. 11 is a schematic structural diagram of a carbon emission reduction system of a thermal power plant according to a seventeenth embodiment of the present invention;
fig. 12 is a schematic structural diagram of a carbon emission reduction system of a thermal power plant according to an eighteenth embodiment of the present invention;
fig. 13 is a schematic structural diagram of a carbon emission reduction system of a thermal power plant according to nineteenth embodiment of the present invention;
fig. 14 is a schematic structural diagram of a carbon emission reduction system of a thermal power plant according to an embodiment twenty of the present invention;
fig. 15 is a schematic structural diagram of a carbon emission reduction system of a thermal power plant according to twenty one embodiment of the present invention;
fig. 16 is a schematic structural diagram of a carbon emission reduction system of a thermal power plant provided by twenty two embodiments of the present invention.
Description of the reference numerals
For further clarity of explanation of the structure and connections between the various components of the present invention, the following reference numerals are given and described.
A thermal power plant boiler 1; an exhaust gas discharge port 11; a steam engine 2; a generator device 3; a pyrolysis gasification device 4; a carbonization section 41; a carbon washing device 411; a carbonization furnace 412; an air blower 413; a gas refining section 42; a gas collection tank 421; a gas-liquid separator 422; a direct cooling tower 423; a gas purification section 43; a cross pipe primary cooler 431; a cold water reservoir 432; an electrical tar precipitator 433; a desulfurization purification unit 434; a fresh water pump 435; a first fan 436; a second fan 437; a semi-coke treatment section 44; a quenching device 441; a dryer 442; a coke screening device 443; a tar treatment unit 45; a tar ammonia clarifier 451; a tar tank 452; an ammonia gas treatment unit 46; an ammonia water circulation tank 461; steam ammonia generator 462; a feed port 47; a discharge opening 48; a pyrolysis gas outlet 49; a refuse storage pit 4 a; a grab bucket 4 b; a percolate bath 4 c; a drying device 41'; a pyrolysis gasification chamber 42'; a secondary combustion chamber 43'; a pyrolysis gas supply pipeline 5; a multi-fuel burner 6; a valve 7; a gas-liquid separation device 8; a biomass extract container 81; a hot water tank 82; a heating network 83; a gas boiler 84; an exhaust gas treatment device 9; a flue gas treatment device 91; an air preheater 92; an activated carbon adsorption device 93; a dust separator 94.
Through the above reference sign explanation, combine the embodiment of the utility model, can more clearly understand and explain the technical scheme of the utility model.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The present invention will be described in detail below by way of examples.
The embodiment of the utility model provides a thermal power plant carbon emission reduction system, as shown in figure 1, including thermal power plant boiler 1, steam turbine 2 and generator equipment 3, thermal power plant boiler 1 is connected with steam turbine 2, steam turbine 2 is connected with generator equipment 3, and thermal power plant boiler 1 burns fuel and produces vapor, and vapor lets in to steam turbine 2 and drives steam turbine 2 and rotate, and the steam turbine 2 that rotates drives generator equipment 3 and operates, produces electric power, and is further, thermal power plant carbon emission reduction system still includes pyrolysis gasification device 4, pyrolysis gas air supply line 5 and many fuel combustor 6, and wherein, many fuel combustor 6 sets up on thermal power plant boiler 1, and pyrolysis gasification device 4 is connected with many fuel combustor 6 through pyrolysis gas air supply line 5, pyrolysis gasification device 4 can be with arbitrary pyrolysis in coal, living beings, rubbish, mud fuel for pyrolysis gas, the coal is supplied to the boiler 1 of the thermal power plant for mixed combustion, thereby reducing the coal consumption of the boiler of the thermal power plant and further reducing the carbon emission of the flue gas of the boiler of the thermal power plant.
Pyrolysis gas supply pipe 5 is with pyrolysis gasification unit 4 and the air feed burning rifle intake-tube connection of the many fuel combustor 6 of setting on thermal power plant boiler 1, and is further on the air feed burning rifle intake-tube of many fuel combustor 6, still be provided with valve 7, the setting can control the pyrolysis tolerance of the confession thermal power plant boiler 1's of thoughtlessly burning at the air feed burning rifle intake-tube valve 7.
Further, the pyrolysis gasification device 4 comprises a feed inlet 47, a discharge outlet 48 and a pyrolysis gas outlet 49, and the pyrolysis gas outlet 49 is connected with the pyrolysis gas supply pipeline 5.
The embodiment of the utility model provides an in the second, on the basis of embodiment one the pyrolysis fuel that drops into in the feed inlet 47 includes coal, the discharged material of bin outlet 48 includes blue charcoal, and discharged blue charcoal is used for selling to the external world.
The embodiment of the utility model provides a in three, on the basis of embodiment one the pyrolysis fuel that drops into in the feed inlet 47 includes living beings, rubbish or mud, the discharged material of bin outlet 48 includes the waste residue.
In the fourth embodiment of the present invention, on the basis of the second or third embodiment, the pyrolysis gas supply line 5 is provided with a gas flow sensor for measuring the amount of pyrolysis gas fed into the boiler 1 of the thermal power plant through the pyrolysis gas supply line 5;
and a gas component analysis monitoring device is arranged on the pyrolysis gas supply pipeline 5 and is used for measuring the components of the pyrolysis gas which is sent into the boiler of the thermal power plant through the pyrolysis gas supply pipeline 5.
The embodiment of the utility model provides an in five, on the basis of embodiment four, gas composition analysis monitoring devices can also set up on the sample gas pipeline.
The embodiment of the utility model provides a six in, on the basis of embodiment five still set up tar recovery unit on pyrolysis gasification device 4's pyrolysis gas outlet 49, tar recovery unit can retrieve the tar component in coal, mud or the living beings.
The seventh embodiment of the present invention provides a hydrogen separator on the pyrolysis gas outlet 49 of the pyrolysis gasification apparatus 4, wherein the hydrogen separator can utilize the pyrolysis gasification apparatus to obtain hydrogen from pyrolysis coal, biomass, garbage or sludge.
The utility model also provides a thermal power plant carbon emission reduction control method, thermal power plant uses aforementioned thermal power plant carbon emission reduction system, the method includes the step:
s1: judging the pyrolysis fuel fed into the pyrolysis gasifier, and if the fed pyrolysis fuel is coal, executing S2; if the pyrolysis fuel charged is biomass, performing S3; if the pyrolysis fuel to be charged is garbage, S4 is executed.
Specifically, the pyrolysis fuel fed into the pyrolysis gasification device can be selected according to the peripheral and regional resource conditions of the thermal power plant.
S2: the pyrolysis fuel charged into the pyrolysis gasification apparatus is processed by using a coal gasification process to generate pyrolysis gas, and then S5 is executed.
Specifically, the coal gasification process may adopt any one of a fixed bed gasification technology, a fluidized bed gasification technology, and an entrained flow gasification technology.
The method comprises the following steps of (1) utilizing a low-temperature solid bed dry distillation gasification process, passing coal through a pyrolysis gasification device to produce gasified pyrolysis gas, sending the gasified pyrolysis gas into a boiler of a thermal power plant for mixed combustion, and using the produced solid semi coke for external sale; the pyrolysis gas replaces the fire coal of the boiler of the thermal power plant, and the carbon emission of the boiler of the thermal power plant is reduced.
S3: the pyrolysis fuel charged into the pyrolysis gasification apparatus is processed using the biomass gasification process to generate pyrolysis gas, and then S5 is performed.
Specifically, the biomass gasification process may employ any one of a fixed bed, a fluidized bed, or a rotary bed gasification furnace.
S4: the pyrolysis fuel charged into the pyrolysis gasification apparatus is processed using the garbage gasification process to generate pyrolysis gas, and then S5 is performed.
Specifically, the waste gasification process can adopt any one of a fixed bed gasification furnace, a fluidized bed gasification furnace or a rotary bed gasification furnace.
S5: and controlling the gas supply amount of the pyrolysis gas supplied to the multi-fuel burner of the boiler of the thermal power plant by using a valve on the pyrolysis gas supply pipeline according to the components and the flow of the pyrolysis gas.
According to the components and the flow of the pyrolysis gas, the valve on the pyrolysis gas supply pipe is used for controlling the gas supply amount supplied to the multi-fuel burner of the boiler of the thermal power plant, so that part of the coal consumption is replaced, and the reduction of the carbon emission of the thermal power plant is realized.
The utility model discloses in, different pyrolysis gasification fuel gets into the boiler of thermal power plant through the pyrolysis gas that corresponds gasification technology and burns, replaces the thermal power plant carbon emission reduction volume that the part coal-fired realization of thermal power plant to calculate according to following formula:
Ereduced Co2＝FMarking coal*XMarking coal-FQi (Qi)*XQi (Qi)
＝FQi (Qi)*QQi (Qi)*XMarking coal/QMarking coal-FQi (Qi)*XQi (Qi)
Wherein: eReduced Co2Reduced carbon emission, kgCO, of thermal power generating units for pyrolysis gas to enter thermal power plant boilers2/h；
FMarking coalThe pyrolysis gas replaces the standard coal amount, kg/h
FQi (Qi)The gas quantity of the pyrolysis gas entering a boiler of a thermal power plant is kg/h;
Xmarking coalThe carbon emission per unit coal was 2.775kgCO2/kg
XQi (Qi)The unit carbon emission of pyrolysis gas, kgCO2/kg；
QMarking coalThe lower calorific value of the standard coal unit is kJ/kg;
Qqi (Qi)The lower calorific value of the pyrolysis gas unit is kJ/kg.
Wherein the values of the relevant data refer to tables 1 and 2.
TABLE 1 table of low calorific value and normalized coal index for various fuels
TABLE 2 numerical table of carbon emission calculation factors for several fuels of pulverized coal, natural gas, gasoline, diesel
Table 2 illustrates:
(1) the lower calorific value is 29307 kilojoules (kJ) of fuel, called 1kg of standard coal (1 kgce).
(2) The first two columns of Table 2 are derived from general rules for Integrated energy consumption calculation (GB/T2589-2008).
(3) The last two columns of Table 2 are derived from the provincial greenhouse gas List Manual (Provisioning of modified climate No. [2011] 1041).
(4) The calculation method of the carbon dioxide emission coefficient comprises the following steps: take "raw coal" as an example. 1.9003 ═ 20908 × 0.000000001 × -26.37 × -0.94 × -1000 × -3.66667.
The utility model has the advantages as follows:
(1) a pyrolysis gasification device is arranged in a thermal power plant to pyrolyze coal, biomass, garbage or sludge, obtained pyrolysis gas is sent into a power station boiler to support combustion, and low-load stable combustion of the power station boiler is facilitated.
(2) The pyrolysis gas replaces fire coal, and the carbon emission intensity of the power station boiler is reduced.
(3) The thermal power plant obtains extra treatment cost by treating the garbage or the sludge, and increases the economic benefit of the power plant.
(4) The semi coke obtained by pyrolyzing coal in a thermal power plant is sold externally, and the economic benefit of the power plant can be increased.
The embodiment of the utility model provides an eight, on the basis of embodiment two, as shown in fig. 2, pyrolysis gasification equipment 4 includes that carbomorphism portion 41, coal gas refine portion 42 and coal gas purification portion 43, carbomorphism portion 41, coal gas refine portion 42 and coal gas purification portion 43 connect gradually, carbomorphism portion 41 can let in coal gas that the raw coal formed after burning refine portion 42, draws impurities such as tar and aqueous ammonia in the coal gas, coal gas refines portion 42 and coal gas purification portion 43 and connects, coal gas refines portion 42 and lets in coal gas purification portion 43 through the coal gas that impurity drawed and carry out further impurity and draw, forms finished product gas.
The embodiment of the utility model provides an in nine, as shown in fig. 3 on the basis of the eighth embodiment of the utility model, pyrolysis gasification equipment 4 still includes blue charcoal processing portion 44, carbomorphism portion 41 is connected with blue charcoal processing portion 44, carbomorphism portion 41 is used for receiving the raw coal, forms blue charcoal after burning the carbomorphism with the raw coal to let in blue charcoal processing portion 44 with blue charcoal, generate the blue charcoal of finished product.
Specifically, the carbonization part 41 comprises a coke washing device 411, a carbonization furnace 412 and an air fan 413, the semi-coke treatment part 44 comprises a coke quenching device 441, a dryer 442 and a coke screening device 443, the coke washing device 411 is used for receiving raw coal for cleaning, the coke washing device 411 is connected with the carbonization furnace 412 and used for supplying the cleaned raw coal into the carbonization furnace 412, and the air fan 413 is connected with the carbonization furnace 412 and used for providing air required by combustion for the carbonization furnace 412; the coke oven 412 is connected with the coke quenching device 441 and is used for providing the semi coke produced after the carbonization and combustion to the coke quenching device 441, the coke quenching device 441 is sequentially connected with the dryer 442 and the coke screening device 443, the semi coke is quenched by the coke quenching device 441 to generate water-containing semi coke, and the water-containing semi coke is dried by the dryer 442 and screened by the coke screening device 443 to generate finished semi coke.
The embodiment of the utility model provides an in ten, as shown in fig. 4 the utility model provides an on nine basis, pyrolysis gasification equipment 4 still includes tar processing portion 45, coal gas refine portion 42 with tar processing portion 45 connects, tar processing portion 45 can refine the tar aqueous ammonia mixture that portion 42 let in with coal gas and carry out tar and refine, generate finished product tar.
Specifically, the gas refining section 42 includes a gas collecting tank 421 and a gas-liquid separator 422; the tar treatment unit 45 includes a tar ammonia water clarifier 451 and a tar tank 452; the gas collecting tank 421 is connected to the carbonization furnace 412 and is configured to receive raw coke oven gas generated by the carbonization furnace 412, the gas collecting tank 421 is further connected to the gas-liquid separator 422, and the gas-liquid separator 422 is configured to receive raw coke oven gas in the gas collecting tank 421 and perform gas-liquid separation on the raw coke oven gas to generate a gas-tar ammonia water mixture; the gas-liquid separator 422 is further connected with a tar ammonia water clarifying tank 451, the tar ammonia water clarifying tank 451 collects the tar ammonia water mixture for clarification, and the clarified tar is input into the tar tank 452, so that finished tar is obtained.
The embodiment of the utility model provides an eleven, as shown in fig. 5 on the basis of the ten embodiments of the utility model, pyrolysis gasification equipment 4 still includes ammonia processing portion 46, ammonia processing portion 46 also refines portion 42 with the coal gas and is connected, ammonia processing portion 46 can refine the coal gas the aqueous ammonia that portion 42 let in and save and handle, generates steam ammonia, and is further, ammonia processing portion 46 still is connected with coal gas purification portion 43, ammonia processing portion 46 can with steam ammonia lets in coal gas purification portion 43, participates in the desulfurization reaction in coal gas purification portion 43, helps the coal gas desulfurization in coal gas purification portion 43.
Specifically, the gas refining section 42 further includes a direct cooling tower 423, the ammonia gas treatment section 46 includes an ammonia water circulation tank 461 and a steam ammonia generation device 462, the direct cooling tower 423 is used for receiving the gas generated from the gas-liquid separator 422, the direct cooling tower 423 is connected with the tar ammonia water clarification tank 451 on the one hand, and is connected with the ammonia water circulation tank 461 on the other hand, the ammonia water circulation tank 461 is further connected with the tar ammonia water clarification tank 451, the ammonia water circulation tank 461 is further connected with the steam ammonia generation device 462, the steam ammonia generation device 462 is connected with the gas purification section 43, and the direct cooling tower 423 is connected with the gas purification section 43. The direct cooling tower 423 cools the gas generated in the gas-liquid separator 422 to generate more pure gas, a tar ammonia water mixture and pure ammonia water, wherein the tar ammonia water mixture is introduced into the tar ammonia water clarifier 451, and the pure ammonia water is introduced into the ammonia water circulation tank 461. The ammonia water circulation tank 461 also receives ammonia water separated from the tar ammonia water clarification tank 451, the ammonia water circulation tank 461 is connected with the steam ammonia generating device 462, and the steam ammonia generating device 462 converts the ammonia water in the ammonia water circulation tank 461 into steam ammonia which is introduced into the gas purification part 43 and is used for desulfurization purification of the gas in the gas purification part 43.
In the twelfth embodiment of the present invention, as shown in fig. 6, on the basis of the eleventh embodiment of the present invention, the gas purification portion 43 includes a horizontal pipe primary cooler 431, a cold water tank 432, an electrical tar precipitator 433, and a desulfurization purification device 434, the horizontal pipe primary cooler 431 receives gas input by the direct cooling tower 423, the horizontal pipe primary cooler 431 further establishes a circulation water path with the cold water tank 432, so that cold water in the cold water tank 432 can flow cyclically between the horizontal pipe primary cooler 431 and the cold water tank 432; the cold water tank 432 is also connected with the tar ammonia water clarification tank 451 and can provide cold water into the tar ammonia water clarification tank 451, and because the temperature of coal gas and tar is higher, the temperature in the clarification tank after ammonia spraying is higher, and the water cooling is needed for heat absorption and waste heat utilization. The horizontal pipe primary cooler 431 is sequentially connected with an electric tar precipitator 433 and a desulfurization purification device 434, and the steam ammonia generating device 462 is connected with the desulfurization purification device 434.
In the twelfth embodiment of the present invention, the pyrolysis gasification apparatus 4 has the following operation modes: the raw coal is cleaned by a coal washing plant and then put into a carbonization furnace 412 for carbonization, and the carbonization furnace 412 uses the raw coal as a raw material under the blast of an air fan 413 to produce semi coke and raw coke gas; the semi coke is quenched by a quenching device 441 to form hydrous semi coke, the hydrous semi coke is dried by a dryer 442, and the dried semi coke is screened by a screening coke device 443 to form finished semi coke to be sold; the raw coke oven gas is collected in the gas collecting tank 421 and then is separated into a gas and tar ammonia water mixture through the gas-liquid separator 422, wherein the tar ammonia water mixture is introduced into the tar ammonia water settling tank 451 to separate tar and ammonia water, so that tar is separated, and the separated tar is introduced into the tar tank 452; cooling the gas separated from the gas-liquid separator 422 through a direct cooling tower 423, and separating out a tar ammonia water mixture and pure ammonia water again, wherein the tar ammonia water mixture is introduced into a tar ammonia water clarifier 451, and the pure ammonia water is introduced into an ammonia water circulating tank 461; the gas flows out of the direct cooling tower 423 and then is secondarily cooled by a transverse pipe primary cooler 431. After the coal gas flows out of the transverse pipe primary cooler 431, the coal gas passes through an electric tar precipitator 433, so that tar in the coal gas is further separated; after the coal gas flows out of the electrical tar precipitator 433, the sulfur in the coal gas is removed through a desulfurization purification device 434; the ammonia water circulation tank 461 also receives ammonia water separated from the tar ammonia water clarification tank 451, the ammonia water circulation tank 461 is connected with the steam ammonia generating device 462, the steam ammonia generating device 462 converts the ammonia water in the ammonia water circulation tank 461 into steam ammonia, and the steam ammonia is introduced into the desulfurization purification device 434 and is used for desulfurization purification of coal gas in the desulfurization purification device 434. The gas flowing out of the desulfurization purification device 434 is the finished product gas.
Further, a fresh water pump 435 may be further provided on the horizontal pipe primary cooler 431, and the fresh water pump 435 is used to supply fresh water to the horizontal pipe primary cooler 431, so as to prevent the cold water in the cold water tank 432 from being reduced. A first fan 436 can be arranged on a passage between the cross pipe primary cooler 431 and the electrical tar precipitator 433, wherein the first fan 436 is used for enhancing the blowing of coal gas into the electrical tar precipitator 433; a second fan 437 may be further provided on a path between the electrical tar precipitator 433 and the desulfurization purification apparatus 434, and the second fan 437 is used to reinforce the blowing of the gas into the desulfurization purification apparatus 434.
The utility model discloses in embodiment thirteen, as shown in fig. 7, on the basis of embodiment three, thermal power plant carbon emission reduction system still includes gas-liquid separation device 8, gas-liquid separation device 8 sets up in pyrolysis gas outlet 49 department, gas-liquid separation device 8 still is connected with many fuel combustor 6 through pyrolysis gas air supply line 5. When the pyrolysis fuel fed from the feed port 47 of the pyrolysis gasification device 4 is biomass, the biomass is pyrolyzed and gasified by the pyrolysis gasification device 4 to form biomass char, biomass combustible gas, and hot water, the gas-liquid separation device 8 separates the biomass combustible gas from the hot water, and the separated biomass combustible gas is fed into the multi-fuel burner 6 through the pyrolysis gas supply line 5, and simultaneously, the biomass char is generated in the discharge port 48 of the pyrolysis gasification device 4. Further, the biomass charcoal can be made into industrial charcoal, domestic charcoal, activated charcoal, culture medium, soil improvement repairing agent, fertilizer slow release agent and the like.
In a fourteenth embodiment of the present invention, as shown in fig. 8, on the basis of the thirteenth embodiment, the thermal power plant carbon emission reduction system further includes a biomass extracting solution container 81, and the biomass extracting solution container 81 is connected to the gas-liquid separation device 8; the gas-liquid separation device 8 can separate and extract biomass extract from the output of the pyrolysis gas outlet 49 and feed the biomass extract into the biomass extract container 81. Further, the biomass extracting solution can be prepared into foliar fertilizer, disinfectant, deodorant and the like.
In the fifteenth embodiment of the present invention, as shown in fig. 9, on the basis of the fourteenth embodiment, the carbon emission reduction system of the thermal power plant further includes a hot water container 82 and a heat supply network 83, the hot water container 82 is connected to the pyrolysis gas supply pipeline 5 at the pyrolysis gas outlet 49 on the one hand, and is connected to the gas-liquid separation device 8 on the other hand, the hot water separated by the gas-liquid separation device 8 can be input into the hot water container 82, and the hot water discharged from the pyrolysis gas outlet 49 can also be input into the hot water container 82; the hot water tank 82 is also connected to a heating network 83, and is used for supplying hot water to the heating network 83 to realize heating.
In the sixteenth embodiment of the present invention, as shown in fig. 10, on the basis of the fifteenth embodiment, the carbon emission reduction system of the thermal power plant further includes a gas boiler 84, the gas boiler 84 is connected with the pyrolysis gas supply pipeline 5, and the biomass combustible gas in the pyrolysis gas supply pipeline 5 enters into the gas boiler 84 for combustion to generate steam for other uses.
In the seventeenth embodiment of the present invention, as shown in fig. 11, on the basis of the third embodiment, the thermal power plant carbon emission reduction system further includes a garbage storage pit 4a, where the garbage storage pit 4a is used for storing garbage, so that the garbage is accumulated and percolated in the garbage storage pit; the thermal power plant carbon emission reduction system further comprises a grab bucket 4b, the grab bucket 4b grabs and conveys the garbage in the garbage storage pit 4a to a feeding hole 47 of the pyrolysis gasification device 4, and the pyrolysis gasification device 4 carries out pyrolysis gasification on the garbage to generate combustible pyrolysis gas which is input into the multi-fuel burner 6; because pyrolysis gasification device 4 carries out pyrolysis gasification back to rubbish, not only can generate combustible pyrolysis gas, still can generate a large amount of flue gases, causes the pollution to the air on the exhaust outlet 11 of thermal power plant boiler 1, set up exhaust treatment device 9, the flue gas passes through exhaust treatment device 9, purifies for waste gas up to standard, has reduced the pollution to the air.
The embodiment of the utility model provides an eighteen, as shown in fig. 12, on the basis of embodiment seventeen, exhaust treatment device 9 includes flue gas processing apparatus 91, active carbon adsorption device 93 and dust remover 94, flue gas processing apparatus 91, active carbon adsorption device 93 and dust remover 94 connect gradually, and flue gas from exhaust gas outlet 11 exhaust obtains purifying through flue gas processing apparatus 91, active carbon adsorption device 93 and dust remover 94 in proper order, forms waste gas up to standard.
In nineteenth embodiment of the present invention, as shown in fig. 13, on the basis of eighteenth embodiment, the pyrolysis gasification apparatus 4 includes a drying apparatus 41 ', a pyrolysis gasification chamber 42' and a second combustion chamber 43 ', the drying apparatus 41' is connected to a feed port 47 of the pyrolysis gasification apparatus 4, and is configured to receive the garbage thrown in from the feed port 47, and dry the garbage; the drying device 41 'is connected with a pyrolysis gasification chamber 42', and the pyrolysis gasification chamber 42 'receives the dried garbage conveyed from the drying device 41' and carries out pyrolysis gasification; the pyrolysis gasification chamber 42 ' is also respectively connected with a pyrolysis gas outlet 49 and a secondary combustion chamber 43 ', the pyrolysis gasification chamber 42 ' conveys combustible pyrolysis gas and flue gas to the pyrolysis gas outlet 49, and conveys pyrolyzed substances to the secondary combustion chamber 43 ' for further combustion to generate harmless ash, and the secondary combustion chamber 43 ' is connected with a discharge port 48 of the pyrolysis gasification device 4 and is used for discharging harmless ash to the discharge port 48; the harmless ash can be treated in a landfill mode or be comprehensively utilized.
In the twenty embodiment of the present invention, as shown in fig. 14, on the basis of the nineteenth embodiment, the exhaust gas treatment device 9 further includes an air preheater 92, and the air preheater 92 is connected between the flue gas treatment device 91 and the activated carbon adsorption device 93; the air preheater 92 is also respectively connected with the boiler 1 of the thermal power plant and the second combustion chamber 43'; the flue gas passing through the flue gas treatment device 91 is introduced into an air preheater 92 to generate hot air, and the hot air is introduced into the boiler 1 and the secondary combustion chamber 43' of the thermal power plant respectively to support combustion.
The utility model discloses in twenty one of the embodiment, as shown in fig. 15, on the basis of twenty of the embodiment, rubbish pit 4a still is connected with air heater 92, the negative pressure deodorization gas that generates in rubbish pit 4a can let in air heater 92 in, deodorizes to the waste gas that flows through in air heater 92.
The embodiment of the utility model provides an in twenty two, as shown in fig. 16, on the basis of embodiment twenty one, thermal power plant carbon emission reduction system still includes leachate pool 4c, leachate pool 4c is connected with rubbish storage pit 4a on the one hand, and on the other hand is connected with thermal power plant boiler 1, and rubbish piles up the infiltration in rubbish storage pit, generates filtration liquid, filtration liquid flows into in leachate pool 4c, among leachate pool 4c filtration liquid lets in thermal power plant boiler 1, carries out the innoxious processing of high temperature combustion to filtration liquid.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A thermal power plant carbon emission reduction system comprises a thermal power plant boiler (1), a steam turbine (2) and generator equipment (3), wherein the thermal power plant boiler (1) is connected with the steam turbine (2), and the steam turbine (2) is connected with the generator equipment (3); the carbon emission reduction system for the thermal power plant is characterized by further comprising a pyrolysis gasification device (4), a pyrolysis gas supply pipeline (5) and a multi-fuel burner (6), wherein the multi-fuel burner (6) is arranged on the boiler (1) of the thermal power plant, the pyrolysis gasification device (4) is connected with the multi-fuel burner (6) through the pyrolysis gas supply pipeline (5), and the pyrolysis gasification device (4) can pyrolyze any one of coal, biomass, garbage and sludge fuel into pyrolysis gas to be supplied to the boiler (1) of the thermal power plant for mixed combustion; the thermal power plant carbon emission reduction system further comprises a garbage storage pit (4a), wherein the garbage storage pit (4a) is used for storing garbage, so that the garbage is accumulated and percolated in the garbage storage pit; the thermal power plant carbon emission reduction system further comprises a grab bucket (4b), and the grab bucket (4b) is used for grabbing and conveying the garbage in the garbage storage pit (4a) to the pyrolysis gasification device (4).
2. The thermal power plant carbon emission reduction system according to claim 1, wherein the pyrolysis gas supply line (5) connects the pyrolysis gasification unit (4) with a gas supply burner gas supply pipe of a multi-fuel burner (6) provided on the thermal power plant boiler (1).
3. The thermal power plant carbon emission reduction system according to claim 2, wherein a valve (7) is further provided in the air inlet pipe of the air supply combustion gun of the multi-fuel burner (6), and the valve (7) provided in the air inlet pipe of the air supply combustion gun can control the amount of pyrolysis gas supplied to the mixed combustion of the boiler (1) of the thermal power plant.
4. The thermal power plant carbon emission reduction system according to claim 3, wherein the pyrolysis gasification device (4) comprises a feed inlet (47), a discharge outlet (48) and a pyrolysis gas outlet (49), the pyrolysis gas outlet (49) being connected to the pyrolysis gas feed line (5).
5. The thermal power plant carbon emission reduction system according to claim 4, wherein the grab bucket (4b) is used for grabbing and transporting the garbage in the garbage storage pit (4a) to a feeding hole (47) of the pyrolysis gasification device (4); an exhaust gas treatment device (9) is arranged on an exhaust gas outlet (11) of the thermal power plant boiler (1).
6. The thermal power plant carbon emission reduction system according to claim 5, wherein the exhaust gas treatment device (9) comprises a flue gas treatment device (91), an activated carbon adsorption device (93) and a dust remover (94), and the flue gas treatment device (91), the activated carbon adsorption device (93) and the dust remover (94) are connected in sequence.
7. The thermal power plant carbon emission reduction system according to claim 6, wherein the pyrolysis gasification device (4) comprises a drying device (41 '), a pyrolysis gasification chamber (42') and a secondary combustion chamber (43 '), and the drying device (41') is connected with a feeding port (47) of the pyrolysis gasification device (4) and is used for receiving garbage fed from the feeding port (47) and drying the garbage; the drying device (41 ') is connected with a pyrolysis gasification chamber (42'), and the pyrolysis gasification chamber (42 ') is used for receiving the dried garbage conveyed from the drying device (41') and performing pyrolysis gasification; the pyrolysis gasification chamber (42 ') is also respectively connected with a pyrolysis gas outlet (49) and a secondary combustion chamber (43'), the pyrolysis gasification chamber (42 ') is used for conveying combustible pyrolysis gas and flue gas to the pyrolysis gas outlet (49) and conveying pyrolyzed substances to the secondary combustion chamber (43') for further combustion to generate ash; the second combustion chamber (43') is connected with a discharge opening (48) of the pyrolysis gasification device (4) and is used for discharging ash to the discharge opening (48).
8. The thermal power plant carbon emission reduction system according to claim 7, wherein the exhaust gas treatment device (9) further comprises an air preheater (92), the air preheater (92) being connected between the flue gas treatment device (91) and the activated carbon adsorption device (93); the air preheater (92) is also respectively connected with the boiler (1) of the thermal power plant and the secondary combustion chamber (43 ') and is used for respectively introducing hot air generated in the air preheater (92) into the boiler (1) of the thermal power plant and the secondary combustion chamber (43').
9. The thermal power plant carbon emission reduction system according to claim 8, wherein the waste storage pit (4a) is further connected with an air preheater (92), and negative pressure deodorizing gas generated in the waste storage pit (4a) can be introduced into the air preheater (92) to deodorize the exhaust gas flowing through the air preheater (92).
10. Thermal power plant carbon emission reduction system according to claim 9, further comprising a percolate reservoir (4c), said percolate reservoir (4c) being connected on the one hand to the refuse storage pit (4a) and on the other hand to the thermal power plant boiler (1) so that percolate from the refuse storage pit can flow into the percolate reservoir (4c), said percolate from the percolate reservoir (4c) being able to pass into the thermal power plant boiler (1).
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| CN201822249424.8U Active CN209854068U (en) | 2018-12-26 | 2018-12-29 | Carbon emission reduction system of thermal power plant |
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