CN212339256U - Organic hazardous waste and inorganic hazardous waste cooperative comprehensive utilization power generation system - Google Patents
Organic hazardous waste and inorganic hazardous waste cooperative comprehensive utilization power generation system Download PDFInfo
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- CN212339256U CN212339256U CN202021167744.XU CN202021167744U CN212339256U CN 212339256 U CN212339256 U CN 212339256U CN 202021167744 U CN202021167744 U CN 202021167744U CN 212339256 U CN212339256 U CN 212339256U
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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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- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model discloses an useless and useless comprehensive utilization power generation system in coordination of inorganic danger of organic danger includes the useless pyrolysis system of organic danger, utilizes the noncondensable gas that the useless pyrolysis system of organic danger produced to act as reductant and heat source, and be used for the useless oxygen boosting side blown stove of smelting of inorganic danger, with the flue gas waste heat recovery utilization's of oxygen boosting side blown stove exhaust-heat boiler, utilize the steam generator set of the steam electricity generation of exhaust-heat boiler production and carry out the flue gas processing system handled to exhaust-heat boiler's flue gas. By adopting the system and the process, the method has the advantages of no secondary pollution, thorough harmless treatment and resource recovery.
Description
Technical Field
The utility model relates to a hazardous waste handles technical field, concretely relates to useless and useless comprehensive utilization power generation system in coordination of inorganic danger of organic danger.
Background
Hazardous waste refers to waste that is toxic, flammable, explosive, corrosive, chemically reactive, or infectious, and poses a serious hazard to the ecological environment and human health. With the development of economy and the improvement of industrialization level in China, the yield of industrial hazardous wastes is rapidly increased, and a large amount of industrial hazardous wastes accumulated and newly generated every year in China not only occupy valuable land resources, but also bring serious pollution to soil, water and atmosphere.
The organic hazardous waste comprises hazardous waste of the categories of medical waste, pesticide waste, waste organic solvent, waste mineral oil, distillation residue, dye coating waste, organic resin waste, photosensitive material waste, incineration disposal residue, waste catalyst and the like, the main components of the organic hazardous waste are C, H-containing high molecular compounds, and the organic hazardous waste contains a certain calorific value, and the domestic disposal modes of the organic hazardous waste mainly comprise 4 types of disposal modes such as landfill, incineration, cement kiln cooperative disposal, newly developed anaerobic pyrolysis technology and the like. The landfill process has large environmental risk and can not realize resource utilization; the flue gas volume of the incineration process is large, a large amount of dioxin can be generated once the temperature is improperly controlled in the operation process, the fly ash generated by incineration is still dangerous waste and needs to be further buried, the pollution problem of the dioxin in the incineration process is serious, and the resource utilization degree is low; the cement kiln is used for performing cooperative treatment on the solid hazardous wastes, the solid hazardous wastes are thrown into the cement kiln, the solid hazardous wastes are incinerated while cement clinker production is performed, and the process has the greatest advantages of low operation cost and low resource utilization degree, heavy metal components in hazardous waste raw materials cannot be subjected to vitrification melting treatment, and the cement quality is difficult to guarantee.
The pyrolysis process utilizes the thermal instability of organic matters, is heated and decomposed in an anaerobic environment in a pyrolysis reactor, and converts waste into energy products such as oil, carbon black (carbon slag), pyrolysis gas and the like with high added values through a series of complex chemical reactions. The technology is one of the leading technologies of the world polymer mass energy research, is widely applied to harmless and resource treatment of waste tires, waste plastics, oil sludge, biomass, waste mineral oil and other wastes, is the most important ultimate treatment means for solid waste and hazardous waste, and realizes resource utilization of organic waste. However, the bottom slag generated in the incineration, pyrolysis and other processes of hazardous wastes still needs to be treated for the second time.
Inorganic hazardous wastes are generally sludge or residues containing valuable metals such as copper, nickel and the like and other harmful metals, at present, the hazardous wastes are mainly treated by a pyrogenic process melting process, generally, the sludge with higher water content is subjected to treatment processes such as drying, brick making, reduction smelting and the like, the valuable metals in the hazardous wastes are enriched into a crude copper alloy through reduction smelting and are extracted, and other harmful components in the raw materials are subjected to melting treatment to form vitrified slag as a building material raw material, so that the aims of recycling and harmless treatment are fulfilled; however, the process consumes a large amount of carbonaceous fuel in the drying and reducing smelting processes, the energy consumption is high, and the generated high-temperature flue gas cannot be fully utilized.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a do not have secondary pollution, can realize thoroughly innocent treatment and can the useless comprehensive utilization power generation system in coordination of organic danger and inorganic danger of resource recovery.
The utility model discloses an above-mentioned problem is solved to following technical means:
the utility model provides an useless and useless comprehensive utilization power generation system in coordination of inorganic danger of organic danger, includes the useless pyrolysis system of organic danger, utilizes the noncondensable gas that the useless pyrolysis system of organic danger produced to act as reductant and heat source, and is used for the useless oxygen boosting side-blown converter that smelts of inorganic danger, with the exhaust-heat boiler of the flue gas waste heat recovery utilization of oxygen boosting side-blown converter, the steam generator set who utilizes the steam power generation that exhaust-heat boiler produced and the flue gas processing system who handles exhaust-heat boiler's flue gas.
Further, the organic hazardous waste pyrolysis system comprises a first crusher, a pyrolysis reactor, an oil-gas condensation device, an oil-water separation device, a non-condensable gas purification device and a carbon black cooling device, wherein the first crusher is used for crushing organic hazardous waste, the pyrolysis reactor is used for pyrolyzing the organic hazardous waste, the oil-gas condensation device is used for realizing oil-gas separation on pyrolysis gas, the oil-water separation device is used for oil-water separation, the non-condensable gas purification device is used for purifying the non-condensable gas, and the carbon black cooling device is used for cooling.
Further, the organic hazardous waste pyrolysis system further comprises a heating furnace for heating the non-condensable gas so as to provide a heat source for the pyrolysis reactor.
Further, the device also comprises a second crusher used for crushing the inorganic hazardous waste and matched with the oxygen-enriched side-blown furnace, a rotary kiln dryer used for drying the inorganic hazardous waste and a granulator used for granulating.
Further, the flue gas treatment system comprises a dry type deacidification tower, a bag-type dust remover, an alkali liquor desulfurization tower, an electrostatic demister and a chimney which are matched for use.
A power generation process by synergetic and comprehensive utilization of organic hazardous wastes and inorganic hazardous wastes comprises the following steps:
crushing the organic hazardous waste by a first crusher, and conveying the crushed material to a pyrolysis reactor for pyrolysis by a screw feeder;
the material is heated and decomposed in an anaerobic environment in the pyrolysis reactor, and the pyrolysis gas generated by pyrolysis is separated from oil and gas through an oil-gas condensing device;
the noncondensable gas separated by the oil gas condensing device is purified by a noncondensable gas purifying device and then is guided into a gas holder for temporary storage;
the oil-water separated by the oil-gas condensing device is separated from heavy oil and oily wastewater by an oil-water separating device, the heavy oil is introduced into a heavy oil tank for temporary storage, and the oily wastewater is sent to a wastewater treatment station;
cooling the high-temperature carbon black generated by pyrolysis by a carbon black cooling device, and then guiding the carbon black into a carbon residue storage for temporary storage;
crushing the low-water-content inorganic hazardous waste by a second crusher, mixing the crushed low-water-content inorganic hazardous waste with the high-water-content inorganic hazardous waste dried by a rotary kiln dryer, adding carbon black generated by pyrolysis reaction, and granulating and molding by a granulator;
the granulation molding material is compatible with limestone and quartz stone and is sent into an oxygen-enriched side-blown furnace for smelting, and noncondensable gas provides a reducing agent and a heat source for smelting to obtain a crude alloy ingot and a water-quenched slag product;
after flue gas generated in the smelting process is subjected to urea denitration, the flue gas is subjected to waste heat utilization by a waste heat boiler, and generated high-quality steam is guided into a steam generator set to generate power;
and deacidifying, dedusting and demisting the flue gas subjected to heat exchange by a flue gas treatment system, and discharging the flue gas after reaching the standard.
Further, the organic hazardous waste is crushed after being compounded according to the heat value, the halogen content, the sulfur content and the water content.
Further, the non-condensable gas is purified by adopting a mode of spraying NAOH alkali liquor.
And further, one part of the purified non-condensable gas enters a heating furnace to provide a heat source for pyrolysis reaction, and the other part of the purified non-condensable gas enters an oxygen-enriched side-blown furnace to provide a reducing agent and a heat source for inorganic hazardous waste smelting.
Further, the rotary kiln dryer is dried by steam generated by a waste heat boiler.
The utility model has the advantages that:
the utility model provides an useless and useless comprehensive utilization power generation system and technology in coordination of inorganic danger of organic danger, this system, including the useless pyrolysis system of organic danger, utilize the noncondensable gas that the useless pyrolysis system of organic danger produced to act as reductant and heat source, and be used for the useless oxygen boosting side blown stove of smelting of inorganic danger, with the exhaust-heat boiler of the flue gas waste heat recovery utilization of oxygen boosting side blown stove, utilize the steam generator set of the steam power generation that exhaust-heat boiler produced and carry out the flue gas processing system handled to exhaust-heat boiler's flue gas. By adopting the system and the process, the method has the advantages of no secondary pollution, thorough harmless treatment and resource recovery.
In particular, the advantages of the present application are reflected in the following aspects:
1. the utility model discloses be different from landfill technology, incineration process, cement kiln collaborative technology and pyrolysis process, when handling organic hazardous waste, realize the useless utilization of organic danger.
2. The utility model discloses an inorganic hazardous waste is handled to oxygen boosting side-blown melting technology, when retrieving valuable metal, does not produce the dangerous waste of secondary.
3. The utility model discloses an useless and inorganic dangerous coprocessing of organic danger has solved the problem that pyrolysis technology produced the useless carbon black of secondary danger promptly, has also solved oxygen boosting side-blown melting technology and has need to consume a large amount of carbonaceous fuel, the very high problem of energy consumption.
4. The load of the heating furnace can be adjusted, and the pyrolysis temperature can be adjusted. The higher the pyrolysis temperature is, the lighter the pyrolysis gas components are, the higher the non-condensable gas yield is, and the lower the heavy oil yield is.
5. The aim of 'massively and variously' cooperative treatment of various organic and inorganic hazardous wastes is achieved.
6. The effective utilization of resources is realized to the maximum extent, and the aims of treating pollution without producing pollution, utilizing waste and producing no waste are fulfilled.
Drawings
The invention is further described with reference to the following figures and examples.
Fig. 1 is a schematic view of the overall device connection of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the embodiment discloses an organic hazardous waste and inorganic hazardous waste collaborative comprehensive utilization power generation system, which comprises an organic hazardous waste pyrolysis system 1, wherein non-condensable gas generated by the organic hazardous waste pyrolysis system serves as a reducing agent and a heat source, and is used for an oxygen-rich side-blown converter 204 for inorganic hazardous waste smelting, a waste heat boiler 301 for recycling flue gas waste heat of the oxygen-rich side-blown converter, a steam generator set 302 for generating power by using steam generated by the waste heat boiler 301, and a flue gas treatment system 4 for treating flue gas of the waste heat boiler 301, wherein the waste heat boiler and the steam generator set form a waste heat utilization system 3.
The organic hazardous waste pyrolysis system comprises a first crusher 101, a pyrolysis reactor 102, an oil-gas condensing device 105, an oil-water separation device 104, a non-condensable gas purification device 107 and a carbon black cooling device 103 which are matched for use.
The organic hazardous waste pyrolysis system further comprises a heating furnace 106 for heating the non-condensable gases to provide a heat source for the pyrolysis reactor 102.
The device also comprises a second crusher 202, a rotary kiln dryer 203 and a granulator 201 which are matched with the oxygen-enriched side-blown converter 204; the second crusher 202, the rotary kiln dryer 203, the granulator 201 and the oxygen-enriched side-blown converter 204 constitute the inorganic hazardous waste smelting system 2.
The flue gas treatment system comprises a dry type deacidification tower 401, a bag-type dust remover 402, an alkali liquor desulfurization tower 403, an electrostatic demister 404 and a chimney 405 which are matched for use.
The embodiment also provides a power generation process by synergetic and comprehensive utilization of organic hazardous wastes and inorganic hazardous wastes, which comprises the following steps:
crushing the organic hazardous waste to 40-50mm by a first crusher 101, and feeding the crushed material to a pyrolysis reactor 102 for pyrolysis by a screw feeder; the organic hazardous waste refers to HW02 medical waste, HW03 waste pharmaceutical products, HW04 pesticide waste, HW05 wood preservative waste, HW11 distillation residue, HW12 paint, ink, pigment and similar product manufacturing, HW13 organic resin, HW16 photosensitive material waste, HW18 incineration disposal residue, HW39 phenolic waste, HW40 ether-containing waste, HW49 other waste, high-heat value organic solid hazardous waste in HW50 waste catalyst; preferably, the organic hazardous waste is crushed after being compounded according to the heat value, the halogen content, the sulfur content and the water content, and the compounding mode is the prior art and is not described in detail;
the material is heated and decomposed in the anaerobic environment in the pyrolysis reactor, and the pyrolysis gas generated by pyrolysis is separated from oil and gas by the oil-gas condensing device 105; the pyrolysis reactor 105 is a rotary kiln type reactor, and the reaction temperature is 450-; the pyrolysis reactor 105 adopts a high-temperature flue gas dividing wall heating mode for heat supply, natural gas and heavy oil are used as auxiliary fuel when the pyrolysis reactor is started for the first time, and non-condensable gas is used as heating fuel when the pyrolysis reactor is stable in operation; according to different requirements of non-condensable gas, carbon black and heavy oil in the subsequent process, the load of the heating furnace 106 can be adjusted, so that the pyrolysis temperature is adjusted, the higher the pyrolysis temperature is, the lighter the pyrolysis gas component is, the higher the non-condensable gas yield is, and the lower the heavy oil yield is; the oil gas condensing device adopts circulating cooling water as a cooling medium;
the non-condensable gas separated by the oil gas condensing device 105 is purified by a non-condensable gas purifying device 107 and then is guided into a gas holder for temporary storage;
the oil-water separated by the oil-gas condensing device 105 is separated from heavy oil and oily wastewater by the oil-water separating device 104, the heavy oil is introduced into a heavy oil tank for temporary storage, and the oily wastewater is sent to a wastewater treatment station;
cooling the high-temperature carbon black generated by pyrolysis by a carbon black cooling device 103, and then introducing the carbon black into a carbon residue storage for temporary storage; the cooling medium of the carbon black cooling device is circulating water;
crushing the low-water-content inorganic hazardous waste by a second crusher 202, mixing the crushed low-water-content inorganic hazardous waste with the high-water-content inorganic hazardous waste dried by a rotary kiln dryer 203, adding carbon black generated by pyrolysis reaction, and granulating and molding by a granulator 201; inorganic hazardous waste refers to HW16 waste of photosensitive materials, HW17 waste of surface treatment, HW18 incineration disposal residue, HW21 chromium-containing waste, HW22 copper-containing waste, HW23 zinc-containing waste, HW31 lead-containing waste, HW46 nickel-containing waste, HW48 non-ferrous metal smelting waste, HW4 other waste, HW50 waste catalyst waste; the low-moisture inorganic hazardous waste refers to a blocky material with the moisture content of less than 55%, and the high-moisture inorganic hazardous waste refers to a sludge-like material with the moisture content of more than 75%;
the granulation molding material is compatible with limestone and quartz stone and is sent into an oxygen-enriched side-blown furnace 204 for smelting, and non-condensable gas provides a reducing agent and a heat source for smelting to obtain a crude alloy ingot and a water quenching slag product; controlling the oxygen-enriched side-blown smelting temperature to be 1200-1300 ℃;
after denitration of the flue gas generated in the smelting process by urea, waste heat of the flue gas is utilized by a waste heat boiler 301, and the generated high-quality steam is guided into a steam generator set 302 for power generation;
the flue gas after heat exchange is deacidified, dedusted and demisted by the flue gas treatment system 4 and then is discharged after reaching the standard.
The method for purifying the non-condensable gas adopts a mode of spraying NaOH alkaline liquor to remove acid gases such as HCl, H2S, SO2, CO2 and the like in the non-condensable gas.
One part of the purified non-condensable gas enters the heating furnace 106 to provide a heat source for pyrolysis reaction, and the other part of the purified non-condensable gas enters the oxygen-enriched side-blown furnace 204 to provide a reducing agent and a heat source for inorganic hazardous waste smelting.
The rotary kiln dryer 203 is dried by steam generated by a waste heat boiler.
When the non-condensable gas and the pyrolytic carbon black are insufficient, part of carbon essence is added to serve as a reducing agent and fuel.
In conclusion, the system and the process of the embodiment have the advantages of no secondary pollution, thorough harmless treatment and resource recovery.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (5)
1. The utility model provides an useless and useless comprehensive utilization power generation system in coordination of inorganic danger of organic danger, its characterized in that: the system comprises an organic hazardous waste pyrolysis system, a non-condensable gas generated by the organic hazardous waste pyrolysis system and used as a reducing agent and a heat source, and is used for an oxygen-enriched side-blown furnace for inorganic hazardous waste smelting, a waste heat boiler for recycling the flue gas waste heat of the oxygen-enriched side-blown furnace, a steam generator set for generating power by using steam generated by the waste heat boiler and a flue gas treatment system for treating the flue gas of the waste heat boiler.
2. The organic hazardous waste and inorganic hazardous waste collaborative comprehensive utilization power generation system according to claim 1, characterized in that: the organic dangerous waste pyrolysis system comprises a first crusher, a pyrolysis reactor, an oil-gas condensing device, an oil-water separating device, a non-condensable gas purifying device and a carbon black cooling device, wherein the first crusher is used for crushing organic dangerous waste in a matched mode, the pyrolysis reactor is used for pyrolyzing the organic dangerous waste, the oil-gas condensing device is used for realizing oil-gas separation on pyrolysis gas, the oil-water separating device is used for oil-water separation, the non-condensable gas purifying device is used for purifying the non-condensable gas, and the carbon black cooling.
3. The organic hazardous waste and inorganic hazardous waste collaborative comprehensive utilization power generation system according to claim 2, characterized in that: the organic hazardous waste pyrolysis system further comprises a heating furnace for heating the non-condensable gas so as to provide a heat source for the pyrolysis reactor.
4. The organic hazardous waste and inorganic hazardous waste collaborative comprehensive utilization power generation system according to claim 3, characterized in that: the device also comprises a second crusher used for crushing the inorganic hazardous waste and matched with the oxygen-enriched side-blown furnace, a rotary kiln dryer used for drying the inorganic hazardous waste and a granulator used for granulating.
5. The power generation system for the collaborative comprehensive utilization of organic hazardous waste and inorganic hazardous waste according to any one of claims 1 to 4, characterized in that: the flue gas treatment system comprises a dry type deacidification tower, a bag-type dust remover, an alkali liquor desulfurization tower, an electrostatic demister and a chimney which are matched for use.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637464A (en) * | 2020-06-22 | 2020-09-08 | 湖南叶林环保科技有限公司 | Organic hazardous waste and inorganic hazardous waste cooperative comprehensive utilization power generation system and process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637464A (en) * | 2020-06-22 | 2020-09-08 | 湖南叶林环保科技有限公司 | Organic hazardous waste and inorganic hazardous waste cooperative comprehensive utilization power generation system and process |
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