CN203050817U - Steam extraction type steam rankine-ammonia steam rankine combined cycle power generation unit - Google Patents
Steam extraction type steam rankine-ammonia steam rankine combined cycle power generation unit Download PDFInfo
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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
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The utility model relates to a steam extraction type steam rankine-ammonia steam rankine combined cycle power generation unit. Through extracted steam in an ammonia cooling steam rankine cycle in an ammonia steam rankine cycle, the rankine combined cycle power generation unit can recycle vaporized latent heat in the extracted steam in the steam rankine cycle for ammonia steam rankine cycle power generation, so the ammonia steam rankine cycle and the ammonia steam rankine cycle can be compounded together, the safety problem of recycling of waste heat of smoke in the ammonia steam rankine cycle can be solved, the waste heat of the smoke is effectively recycled, low-temperature corrosion of the smoke can be avoided, and waste gas, waste water and spent steam waste heat in a steam rankine cycling system can be effectively recycled and used. The rankine combined cycle power generation unit not only can be used in energy-saving reform of existing units, but also can be used in design and building of newly-built units, and is particularly suitable for newly building, extension and rebuilding of the power generation units in water shortage areas, electricity shortage areas and the like, and remarkable in economical benefit, social benefit and environmental protection benefit.
Description
Technical field
The present invention relates to a kind of type steam Rankine that draws gas-ammonia steam Rankine combined cycle generating unit, specifically belong to the thermal power plant field of power equipment technology.
Background technique
Being the thermal power plant of working medium with the water vapor, is to carry out on a large scale heat energy is transformed into mechanical energy, and the factory that transforms mechanical energy into electricity again.The circulation that the power station is used is very complicated, yet in essence, mainly the Rankine cycle of being made up of equipment such as boiler, steam turbine, vapour condenser, water pumps is finished, its working principle is: feedwater is sent into boiler earlier after the feed water pump pressurization, water is heated the superheated vapor of vaporization, formation High Temperature High Pressure in boiler, the superheated vapor acting of in steam turbine, expanding, become the exhaust steam of low-temp low-pressure, enter vapour condenser at last and be condensed into condensed water, through water pump condensed water is sent into boiler again and carry out new circulation.The complex loops of using as for the thermal power plant only on the Rankine cycle basis, in order to improve the thermal efficiency, is improved and the new circulation that forms is the backheat circulation, and the medium of backheat is water.Rankine cycle has become the basic circulation of modern steam power plant.
Modern big-and-middle-sized steam power plant all adopts the heated feed water backheat circulation of drawing gas without any exception, employing is drawn gas behind the backheat heated feed water, feed temperature is improved, thereby improved the heating mean temperature, except having improved thermal efficiency of cycle significantly, though specific steam consumption increases to some extent, owing to draw gas step by step the steam discharge rate is reduced, this is conducive to the internal efficiency ratio η of i.e. this circulation of ratio of actual acting amount and theoretical acting amount
OiRaising, solved the difficulty of large steam turbine exhaust stage blade negotiability restriction simultaneously, the vapour condenser volume also can correspondingly reduce.But still discharge a large amount of latent heats of vaporization when steam condenses in vapour condenser, need a large amount of water or air to cool off, namely wasted heat, caused thermo-pollution, wasted electric energy, water resources again.Therefore how effectively to utilize a large amount of latent heat of vaporization that discharges when steam condenses in the vapour condenser, be worth further investigation.
Give off a large amount of flue gases in the station boiler production process, wherein the heat of recyclable utilization is a lot.Also need in the station boiler running to ensure that by continuous blowdown and periodical blowdown the water quality of boiler meets demand for security, must remove the oxygen in the boiler feed water, to avoid the corrosion to steam generator system simultaneously.Thermal deaerator is the one preferred technique of station boiler at present, and oxygen-eliminating device is carried a large amount of working steams secretly and entered atmosphere in work.Owing to contain a large amount of heats and good water quality in boiler platoon water and the deaerator exhaust, if directly discharging will cause the great energy and the wasting of resources, and environment polluted.Though this two-part residual heat resources waste is huge, recycling has bigger difficulty, and its main cause is: the quality of (1) waste heat is lower, does not find the method for effectively utilizing; (2) waste heat of reclaimer's three parts is often made bigger change to the original thermodynamic system of boiler, has certain risk; (3) thermal balance question is difficult to tissue, is difficult to all directly utilize in inside plants, often needs outwards to seek suitable hot user, and hot user often have fluctuation with heat load, thereby limited the versatility of recovery method.
Gu Wei etc. (present Research and the development trend [J] of low temperature heat energy generating. thermal power engineering .2007.03.Vol.22, No.2.) introduced present Research and the development trend of domestic and international low temperature heat energy generation technology.From the development of low temperature heat energy generation technology research in recent years, research work mainly concentrates on aspects such as the improvement of the research of power cycle working medium and cyclic process and optimal controls.Kalina circulation, ammonia absorption type power refrigeration combined cycle etc. can reach the capacity usage ratio higher than simple cycle in theory.Significant when when considering, becoming factor to the influencing of system based on the generating of the thermodynamic (al) low temperature heat energy of finite time, may realize the maximization that the energy of system utilizes.Improving generating efficiency and environmental protection is the core content of low temperature pyroelectric technology.The Kalina circulation of mentioning in the literary composition, ammonia absorption type power refrigeration combined cycle scheduling theory merit attention.
The above-mentioned card Linne power generation technology of mentioning also has its intrinsic shortcoming: have inflammable, explosive characteristics such as poisonous as ammonia, when boiler or industrial furnace back-end ductwork utilize fume afterheat tissue card Linne circulating generation, dust etc. in the flue gas must be considered to the leakage that the wearing and tearing that are arranged in the heat exchanger in the flue, corrosion etc. cause, the explosion protection of drawing thus and protection of environment and job site etc. must be considered; Be the card Linne circulation of working medium with the ammonia water mixture, the ammonia in the ammoniacal liquor is inflammable, explosive, poisonous medium.This is card Linne power generation technology reclaims dust-laden, must solve when the fume afterheat of corrosive deposit is arranged in electric power station system a difficult problem.
Therefore how to utilize the thermomechanics basic law in steam Rankine cycle thermal power plant, use for reference the innovative approach that combined cycle scheduling theories such as thinking and Rankine-Kalina are organized in compound Rankine cycle, reservation is based on the advantage of the power plant technology of Rankine cycle principle, inquire into new combined cycle theory, really find the new way that increases substantially the thermodynamic cycle power plant thermal efficiency, become the difficult point of this area research.
Summary of the invention
Purpose of the present invention is for solving the shortcoming that technology such as above-mentioned steam Rankine cycle and the circulation of card Linne exist, a kind of type steam Rankine that draws gas-ammonia steam Rankine combined cycle generating unit is proposed, can carry out reducing energy consumption to existing steam Rankine cycle unit, adopt drawing gas as the thermal source of ammonia steam Rankine cycle unit of steam turbine, when effectively alleviating the load of vapour condenser, the recovery a large amount of latent heat of vaporization that discharges of drawing gas when condensing is used for ammonia steam Rankine cycle generating, and can be to hot waste water, the waste heat of waste vapour carries out integrated recovery, solved the key issue of ammonia steam Rankine cycle unit safety operation simultaneously, thereby effectively improve the thermal efficiency of whole Combined Cycle Unit, finally reach energy-saving and cost-reducing, improve the purpose of system thermal efficiency.
The objective of the invention is to realize by following measure:
A kind of steam Rankine-ammonia steam Rankine combined cycle generating unit, this device comprises steam Rankine cycle, the Rankine cycle of ammonia steam, it is characterized in that:
Described steam Rankine cycle refers to the saturated vapour 2 that come out by boiler body 1, forms superheated vapor 3-1 through superheater 3, sends into steam turbine 4 and drives steam-driven generators 21 generatings; The vapour condenser 5 that steam turbine 4 comes out forms water of condensation 6, and water of condensation 6 is sent into boiler body 1 through condensate pump 6-1, oxygen-eliminating device 7-1, feed water pump 7, feed water preheater 8, produces saturated vapour again, thereby forms steam Rankine cycle loop.
The Rankine cycle of described ammonia steam, refer to that ammoniacal liquor 11 sends into condenser/evaporator 10, cooling vaporizer 12, ammonia evaporator 14 respectively or successively through ammoniacal liquor recycle pump 12, the ammonia steam that produces forms ammonia superheated vapor 16 through superheater 9, enter ammonia steam turbine 17 again, drag 20 generatings of ammonia generator, the exhaust steam of discharging from ammonia steam turbine 17 forms ammoniacal liquor 11 through ammonia condenser 18 coolings, enters ammoniacal liquor recycle pump 12 again, thereby forms ammonia steam Rankine cycle loop.
The 4-1 that draws gas that described superheater 9, condenser/evaporator 10 adopt the steam Rankine cycle is as thermal source, and the 4-1 that draws gas forms condensed water 24 through cooling and returns the steam Rankine cycle system.
Described ammoniacal liquor 11 is the ammonia of one-component, or be low boiling component with ammonia, mixed solution such as ammonia-aqueous solution, ammonia-sodium thiocyanate solution or ammonia-calcium chloride solution etc. that high boiling component is absorbing agent.
When described ammoniacal liquor adopts multicomponent solution, ammoniacal liquor 11 through ammoniacal liquor recycle pump 12 or and regenerator 15 send into condenser/evaporator 10, cooling vaporizer 12, ammonia evaporator 14 successively or respectively, the lean solution that forms is returned ammonia condenser 18 through regenerator 15, the pipeline 19 that backflows, the ammonia steam that produces forms ammoniacal liquor 11 through superheater 9, ammonia steam turbine 17, ammonia evaporator 14, ammonia condenser 18, return ammoniacal liquor recycle pump 12, thereby form ammonia steam Rankine cycle loop.
The superheater 9 of described steam Rankine cycle loop by draw gas 4-1 and the ammonia steam Rankine cycle loop of steam turbine 4, condenser/evaporator 10 or and cooling vaporizer 13 or and ammonia evaporator 14, with the Rankine cycle of temperature end steam and organic being combined with each other of low-temperature end ammonia steam Rankine cycle, the latent heat of vaporization that discharges during the 4-1 condensation of drawing gas of high efficiente callback temperature end steam Rankine cycle is used for low-temperature end ammonia steam Rankine cycle generating.
The heat transferring medium ammoniacal liquor of described cooling vaporizer 13 and flue gas adopt the separated type heat exchange mode, cooling vaporizer 13 comprises vaporizer 13-1, condenser 13-2, wherein vaporizer 13-1 is arranged in the flue 23, condenser 13-2 is arranged in outside the flue 23, and phase-change working substance wherein adopts water or other suitable materials; Phase-change working substance absorbs flue gas in vaporizer 13-1 heat produces saturated vapour, saturated vapour is as the thermal source of ammoniacal liquor, by condenser 13-2 and ammoniacal liquor 11 wall-type heat exchanges, the cooling back forms condensation water and produces steam again by the heat of vaporizer 13-1 absorption flue gas again, thereby forms the interior circulation loop of phase-change working substance; Phase-change working substance adopts natural circulation or pump circulation mode.
Be provided with exhaust steam regenerator 22: the ammonia steam that ammonia evaporator 14 produces is got back to ammonia evaporator 14 through exhaust steam regenerator 22, superheater 9, ammonia steam turbine 17, exhaust steam regenerator 22, ammonia evaporator 14, ammonia condenser 18, ammoniacal liquor recycle pump 12, thereby forms ammonia steam Rankine cycle loop.
Described feed water preheater 8, ammonia superheater 9, condenser/evaporator 10, cooling vaporizer 13, ammonia evaporator 14, exhaust steam regenerator 22 can arrange one or more respectively, adopt series, parallel or series-parallel connection mode to connect.
The air 30 that gas fan 31 is sent here enters air preheater 32, form hot air 33, enter fuel-burning equipment 34 and participate in burning, the high-temperature flue gas of generation is discharged after reducing temperature through boiler body 1, superheater 2, feed water preheater 8, air preheater 32, vaporizer 13-1.
Described ammonia condenser 18 arranges according to routine techniques, adopts water or air etc. as cooling medium.
The heat-exchanging element of mentioned aforementioned device can adopt tubulation, fin tube, coiler or spiral groove pipe among the present invention, or adopts the pipe of other augmentation of heat transfer measures or the hollow cavity heat-exchanging element of other patterns.
The a little higher than flue gas acid dew point temperature of wall surface temperature of control vaporizer 13-1 heat exchanger surface, or the cold end corrosion of adopting corrosion-resistant material effectively to alleviate flue gas can effectively reduce temperature of exhaust fume, when avoiding the flue gas low-temperature corrosion, the high efficiente callback fume afterheat.
Unaccounted equipment and standby system thereof, pipeline, instrument, valve among the present invention, be incubated, have the known mature technologies of employing such as regulatory function bypass facility and carry out supporting.
Be provided with the regulating controller with system support of the present invention, adopt the known ripe control technique of existing steam Rankine cycle power station, Cheng Shi cycle power plant or gas-steam combined cycle power plant to carry out supporting, make the type steam Rankine that draws gas-ammonia steam Rankine combined cycle generating unit energy economy, safety, high thermal efficiency operation, reach energy saving purposes.
The present invention has following advantage compared to existing technology:
1, energy-saving effect is remarkable: the type that the draws gas steam Rankine-ammonia steam Rankine combined cycle generating unit of the present invention's design, with drawing gas as the thermal source of ammonia steam Rankine cycle of steam turbine, utilize the utilization of ammonia steam Rankine cycle system centering low-temperature heat source that more high-efficiency characteristics is arranged, except the sensible heat that will draw gas is used for the efficient generating of ammonia steam Rankine cycle, also reclaim the more substantial latent heat of vaporization of drawing gas simultaneously and be used for generating, only utilized the latent heat of vaporization of drawing gas just 50 degree/more than the ton steam nearly of this piece that generate electricity.
2, the generator set operational safety performance improves:
(1) steam turbine draws gas and generates electricity for the Rankine cycle of ammonia steam, vapour condenser load in the steam Rankine cycle effectively alleviates, alleviated the security of operation problem that last stage vane of steam turbine brings because of wet vapor in the steam Rankine cycle simultaneously, the operating conditions of steam turbine is optimized, and obviously improves before the vibration of steam turbine generator set;
During (2) in conjunction with the flue gas waste heat recovery scheme, than traditional card Linne circulating technology, when adopting preferred version, need not in flue, to arrange the heat exchanger of dividing wall type, the better split type phase-change heat-exchanger condenser of Security that adopts in generation reclaims heat, and numerous safety problems that wearing and tearing, the corrosion that causes because of dust in flue gas, aggressive medium etc. causes ammonia solution mixture to follow the flue gas contact to cause are solved at all; Ammonia solution mixture carries out wall-type heat exchange in the phase-change heat-exchanger condenser, because nontoxic, the non-combustion-supporting material of water vapour, non-good characteristics such as flammable, fire-retardant, even leak, accident also obtains handling easily, control, and the operating conditions of the heat exchanger in the circulation of card Linne obviously improves;
(3) because drawing gas of steam Rankine cycle is malleation, therefore can guide to the safe place of adopting the reliable protection measure by pipeline, ammonia steam Rankine cycle system (comprising the phase-change heat-exchanger condenser) can independently be arranged in the safe and reliable protective zone and be equipped with reliable safety installations, the problems of avoiding following the steam Rankine cycle system directly to be staggered in together and causing, the Security of ammonia steam Rankine cycle system is reliably guaranteed, for its industrial applications further eliminates safe hidden trouble.
3, the three wastes of power plant are realized integrated utilization: when the heat exchanger that back-end ductwork arranges adopts phase-change heat-exchanger, waste heat that can the high efficiente callback flue gas, temperature of exhaust fume can be reduced to about 120 ℃, when the phase-change heat-exchanger vaporizer adopts resistant material, temperature of exhaust fume can reduce more, reach about 85 ℃, operation to system for desulfuration and denitration is very favourable, when effectively avoiding the flue gas low-temperature corrosion, the heat that reclaims is used for ammonia steam Rankine cycle system and efficiently generates electricity, and more meets the cascaded utilization of energy principle.Waste heats such as the waste water that the steam Rankine cycle system produces, waste vapour all can be included ammonia steam Rankine cycle system in and recycle.Fundamentally eliminated other waste gas, waste water, waste vapour waste heat recovering device to the influence of whole unit circulation system, realized the integrated utilization of the real meaning of entire power plant system waste heat, effects such as water saving, joint vapour, economize on electricity are obvious.
4, the solution of the present invention both can be used for design, the construction of newly-built combined power plants system, also can be used for existing pure condensate formula, take out and coagulate, take out back of the body unit and carry out reducing energy consumption, energy is the potentiality of excavating device fully, vitalize existing assets, the industrial policy that meets country simultaneously, economical, the Security of unit operation are reliably guaranteed, can effectively improve the thermal efficiency of system.
Description of drawings
Fig. 1 is a kind of type steam Rankine that draws gas of the present invention-ammonia steam Rankine combined cycle generating unit schematic flow sheet.
Among Fig. 1: 1-boiler body, 2-saturated vapour, 3-superheater, the 3-1-superheated vapor, the 4-steam turbine, 4-1-draws gas, the 5-vapour condenser, 6-water of condensation, 6-1-condensate pump, the 7-feed water pump, 7-1-oxygen-eliminating device, 8-feed water preheater, the 9-superheater, 10-condenser/evaporator, 11-ammoniacal liquor, 12-ammoniacal liquor recycle pump, 13-cools off vaporizer, 13-1-vaporizer, the 13-2-condenser, 14-ammonia evaporator, 15-regenerator, 16-ammonia superheated vapor, 17-ammonia steam turbine, 18-ammonia condenser, the 19-liquid that backflows, 20-ammonia generator, 21-steam-driven generator, 22-exhaust steam regenerator, 23-flue, 24-condensed water, the 30-air, 31-gas fan, 32-air preheater, the 33-hot air, the 34-fuel-burning equipment.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Embodiment 1:
As shown in Figure 1, a kind of steam Rankine-ammonia steam Rankine combined cycle generating unit, this device comprises steam Rankine cycle, ammonia steam Rankine cycle system, specific embodiment is as follows:
Ammonia water mixture is adopted in the Rankine cycle of ammonia steam.
Described steam Rankine cycle refers to the saturated vapour 2 that come out by boiler body 1, forms superheated vapor 3-1 through superheater 3, sends into steam turbine 4 and drives steam-driven generators 21 generatings; The vapour condenser 5 that steam turbine 4 comes out forms water of condensation 6, and water of condensation 6 is sent into boiler body 1 through condensate pump 6-1, oxygen-eliminating device 7-1, feed water pump 7, feed water preheater 8, produces saturated vapour again, thereby forms steam Rankine cycle loop.
The Rankine cycle of described ammonia steam, refer to that ammoniacal liquor 11 sends into condenser/evaporator 10, cooling vaporizer 12, ammonia evaporator 14 respectively or successively through ammoniacal liquor recycle pump 12, the ammonia steam that produces forms ammonia superheated vapor 16 through superheater 9, enter ammonia steam turbine 17 again, drag 20 generatings of ammonia generator, the exhaust steam of discharging from ammonia steam turbine 17 forms ammoniacal liquor 11 through ammonia condenser 18 coolings, enters ammoniacal liquor recycle pump 12 again, thereby forms ammonia steam Rankine cycle loop.
The 4-1 that draws gas that described superheater 9, condenser/evaporator 10 adopt the steam Rankine cycle is as thermal source, and the 4-1 that draws gas forms condensed water 24 through cooling and returns the steam Rankine cycle system.
Described steam Rankine cycle loop is by superheater 9, condenser/evaporator 10, cooling vaporizer 13, the ammonia evaporator 14 in draw gas 4-1 and the ammonia steam Rankine cycle loop of steam turbine 4, with the Rankine cycle of temperature end steam and organic being combined with each other of low-temperature end ammonia steam Rankine cycle, the latent heat of vaporization that discharges during the 4-1 condensation of drawing gas of high efficiente callback temperature end steam Rankine cycle is used for low-temperature end ammonia steam Rankine cycle generating.
The heat transferring medium ammoniacal liquor of described cooling vaporizer 13 and flue gas adopt the separated type heat exchange mode, cooling vaporizer 13 comprises vaporizer 13-1, condenser 13-2, wherein vaporizer 13-1 is arranged in the flue 23, and condenser 13-2 is arranged in outside the flue 23, and phase-change working substance wherein adopts water; Phase-change working substance absorbs flue gas in vaporizer 13-1 heat produces saturated vapour, saturated vapour is as the thermal source of ammoniacal liquor, by condenser 13-2 and ammoniacal liquor 11 wall-type heat exchanges, the cooling back forms condensation water and produces steam again by the heat of vaporizer 13-1 absorption flue gas again, thereby forms the interior circulation loop of phase-change working substance; Phase-change working substance adopts natural circulation.
Be provided with exhaust steam regenerator 22: the ammonia steam that ammonia evaporator 14 produces is got back to ammonia evaporator 14 through exhaust steam regenerator 22, superheater 9, ammonia steam turbine 17, exhaust steam regenerator 22, ammonia evaporator 14, ammonia condenser 18, ammoniacal liquor recycle pump 12, thereby forms ammonia steam Rankine cycle loop.
Described feed water preheater 8, ammonia superheater 9, condenser/evaporator 10, cooling vaporizer 13, ammonia evaporator 14, exhaust steam regenerator 22 can arrange one or more respectively, adopt series, parallel or series-parallel connection mode to connect.
The air 30 that gas fan 31 is sent here enters air preheater 32, form hot air 33, enter fuel-burning equipment 34 and participate in burning, the high-temperature flue gas of generation is discharged after reducing temperature through boiler body 1, superheater 2, feed water preheater 8, air preheater 32, vaporizer 13-1.
Described ammonia condenser 18 arranges according to routine techniques, adopts water or air etc. as cooling medium.
The heat-exchanging element of mentioned aforementioned device can adopt tubulation, fin tube, coiler or spiral groove pipe among the present invention, or adopts the pipe of other augmentation of heat transfer measures or the hollow cavity heat-exchanging element of other patterns.
The a little higher than flue gas acid dew point temperature of wall surface temperature of control vaporizer 13-1 heat exchanger surface, or the cold end corrosion of adopting corrosion-resistant material effectively to alleviate flue gas can effectively reduce temperature of exhaust fume, when avoiding the flue gas low-temperature corrosion, the high efficiente callback fume afterheat.
Unaccounted equipment and standby system thereof, pipeline, instrument, valve among the present invention, be incubated, have the known mature technologies of employing such as regulatory function bypass facility and carry out supporting.
Be provided with the regulating controller with system support of the present invention, adopt the known ripe control technique of existing steam Rankine cycle power station, Cheng Shi cycle power plant or gas-steam combined cycle power plant to carry out supporting, make the type steam Rankine that draws gas-ammonia steam Rankine combined cycle generating unit energy economy, safety, high thermal efficiency operation, reach energy saving purposes.
Though the present invention with preferred embodiment openly as above, they are not to limit the present invention, anyly are familiar with this skill person, without departing from the spirit and scope of the invention, when doing various variations or retouching, belong to the present invention's protection domain equally certainly.Therefore protection scope of the present invention should with the application claim was defined is as the criterion.
Claims (8)
1. steam Rankine-ammonia steam Rankine combined cycle generating unit, this device comprises steam Rankine cycle and ammonia steam Rankine cycle system, it is characterized in that:
Described steam Rankine cycle refers to the saturated vapour (2) that come out by boiler body (1), forms superheated vapor (3-1) through superheater (3), sends into steam turbine (4) and drives steam-driven generator (21) generating; The exhaust steam that steam turbine (4) comes out forms water of condensation (6) through vapour condenser (5), and water of condensation (6) is sent into boiler body (1) through feed water pump (7), produces saturated vapour again, thereby forms steam Rankine cycle loop;
Described ammonia steam Rankine cycle loop is provided with superheater (9), adopt the drawing gas of steam Rankine cycle steam turbine (4) (4-1) as thermal source: ammoniacal liquor (11) is through ammoniacal liquor recycle pump (12), condenser/evaporator (10), the ammonia steam that produces forms ammonia superheated vapor (16) through superheater (9), enter ammonia steam turbine (17) again, drag ammonia generator (20) generating, the exhaust steam of discharging from ammonia steam turbine (17) forms ammoniacal liquor (11) through ammonia condenser (18) cooling, enter ammoniacal liquor recycle pump (12) again, thereby form ammonia steam Rankine cycle loop; Or ammoniacal liquor (11) is through ammoniacal liquor recycle pump (12), ammonia evaporator (14), the ammonia steam that produces forms ammonia superheated vapor (16) through superheater (9), enter ammonia steam turbine (17) again, drag ammonia generator (20) generating, the exhaust steam of discharging from ammonia steam turbine (17) forms ammoniacal liquor (11) through ammonia condenser (18) cooling, enter ammoniacal liquor recycle pump (12) again, thereby form ammonia steam Rankine cycle loop; Or ammoniacal liquor (11) is through ammoniacal liquor recycle pump (12), cooling vaporizer (13), the ammonia steam that produces forms ammonia superheated vapor (16) through superheater (9), enter ammonia steam turbine (17) again, drag ammonia generator (20) generating, the exhaust steam of discharging from ammonia steam turbine (17) forms ammoniacal liquor (11) through ammonia condenser (18) cooling, enter ammoniacal liquor recycle pump (12) again, thereby form ammonia steam Rankine cycle loop.
2. device according to claim 1 is characterized in that:
Be provided with feed water preheater (8):
Saturated vapour (2) by boiler body (1) comes out forms superheated vapor (3-1) through superheater (3), sends into steam turbine (4) and drives steam-driven generator (21) generating; The exhaust steam (5) that steam turbine (4) comes out through superheater (9) or and condenser/evaporator (10), ammonia cooling by the Rankine cycle of ammonia steam forms water of condensation (6), water of condensation (6) is through feed water pump (7), feed water preheater (8), boiler body (1), produce saturated vapour again, thereby form steam Rankine cycle loop.
3. device according to claim 1 is characterized in that:
Be provided with oxygen-eliminating device (7-1): the saturated vapour (2) by boiler body (1) comes out, form superheated vapor (3-1) through superheater (3), send into steam turbine (4) and drive steam-driven generator (21) generating; The vapour condenser (5) that steam turbine (4) comes out forms water of condensation (6), water of condensation (6) is sent into boiler body (1) through condensate pump (6-1), oxygen-eliminating device (7-1), feed water pump (7), feed water preheater (8), produce saturated vapour again, thereby form steam Rankine cycle loop.
4. device according to claim 1 is characterized in that:
Be provided with regenerator (15):
The lean solution that the part or all of vaporizer of condenser/evaporator (10), ammonia evaporator (14), cooling vaporizer (12) produces is got back to ammonia condenser (18) through regenerator (15), the pipeline that backflows (19); Ammoniacal liquor (11) is through ammoniacal liquor recycle pump (12), regenerator (15) or and condenser/evaporator (10) or and ammonia evaporator (14) or and the part or all of generation ammonia steam of cooling vaporizer (12).
5. device according to claim 1 is characterized in that:
Be provided with exhaust steam regenerator (22):
Ammoniacal liquor (11) forms ammoniacal liquor (11) through the ammonia steam that ammoniacal liquor recycle pump (12), ammonia evaporator (14) produce through exhaust steam regenerator (22), superheater (9), ammonia steam turbine (17), exhaust steam regenerator (22), ammonia evaporator (14), ammonia condenser (18), enter ammoniacal liquor recycle pump (12) again, thereby form ammonia steam Rankine cycle loop; Or ammoniacal liquor (11) forms ammoniacal liquor (11) through the ammonia steam that ammoniacal liquor recycle pump (12), condenser/evaporator (10) produce through exhaust steam regenerator (22), superheater (9), ammonia steam turbine (17), exhaust steam regenerator (22), condenser/evaporator (10), ammonia condenser (18), enter ammoniacal liquor recycle pump (12) again, thereby form ammonia steam Rankine cycle loop.
6. according to the described device of one of claim 1 to 5, it is characterized in that:
Flue gas in the described cooling vaporizer (13) adopts the separated type heat exchange mode with ammoniacal liquor (11): cooling vaporizer (13) comprises vaporizer (13-1), condenser (13-2), wherein vaporizer (13-1) is arranged in the flue (23), and condenser (13-2) is arranged in outside the flue (23); Phase-change working substance absorbs flue gas in vaporizer (13-1) heat produces saturated vapour, saturated vapour in condenser (13-2) as the thermal source of ammoniacal liquor, by condenser (13-2) and ammoniacal liquor (11) wall-type heat exchange, the cooling back forms condensation water again by vaporizer (13-1), the heat that absorbs flue gas produces steam again, thereby forms the interior circulation loop of phase-change working substance.
7. device according to claim 6 is characterized in that:
Be provided with air preheater (32): the air (30) that gas fan (31) is sent here forms hot air (33) through air preheater (32), enter fuel-burning equipment (34) and participate in burning, the high-temperature flue gas of generation through boiler body (1), superheater (2) or and feed water preheater (8), air preheater (32) or and vaporizer (13-1) discharge after reducing temperature.
8. device according to claim 7 is characterized in that:
Described superheater (3), feed water preheater (8), superheater (9), condenser/evaporator (10), cooling vaporizer (13), ammonia evaporator (14), air preheater (32), regenerator (15), exhaust steam regenerator (22) can arrange one or more respectively, adopt series, parallel or series-parallel connection mode to connect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200421800U CN203050817U (en) | 2013-01-27 | 2013-01-27 | Steam extraction type steam rankine-ammonia steam rankine combined cycle power generation unit |
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| CN2013200421800U CN203050817U (en) | 2013-01-27 | 2013-01-27 | Steam extraction type steam rankine-ammonia steam rankine combined cycle power generation unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075215A (en) * | 2013-01-27 | 2013-05-01 | 南京瑞柯徕姆环保科技有限公司 | Extracted steam type steam Rankine-ammonia steam Rankine combined cycle power generation device |
| CN105386803A (en) * | 2015-12-08 | 2016-03-09 | 中船重工重庆智能装备工程设计有限公司 | Low-grade waste heat power generation system capable of achieving gas-liquid hybrid recycling and control method |
-
2013
- 2013-01-27 CN CN2013200421800U patent/CN203050817U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075215A (en) * | 2013-01-27 | 2013-05-01 | 南京瑞柯徕姆环保科技有限公司 | Extracted steam type steam Rankine-ammonia steam Rankine combined cycle power generation device |
| CN103075215B (en) * | 2013-01-27 | 2015-06-10 | 南京瑞柯徕姆环保科技有限公司 | Extracted steam type steam Rankine-ammonia steam Rankine combined cycle power generation device |
| CN105386803A (en) * | 2015-12-08 | 2016-03-09 | 中船重工重庆智能装备工程设计有限公司 | Low-grade waste heat power generation system capable of achieving gas-liquid hybrid recycling and control method |
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