CN208332277U - Municipal refuse cyclone burning system and its coupling coal fired power plant electricity generation system - Google Patents

Municipal refuse cyclone burning system and its coupling coal fired power plant electricity generation system Download PDF

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Publication number
CN208332277U
CN208332277U CN201820305911.9U CN201820305911U CN208332277U CN 208332277 U CN208332277 U CN 208332277U CN 201820305911 U CN201820305911 U CN 201820305911U CN 208332277 U CN208332277 U CN 208332277U
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cyclone
coal
garbage
burning
connects
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张涛
朱飞
朱一飞
陶丽
蒋晓锋
刘明勇
曹建文
黄辉武
吴明州
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Shanghai Power Equipment Research Institute Co Ltd
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Shanghai Power Equipment Research Institute Co Ltd
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Abstract

The utility model provides a kind of municipal refuse cyclone burning system, including cyclone furnace, is equipped with garbage fuel import at the top of cyclone furnace, cyclone furnace peripheral wall is from top to bottom successively arranged hot wind inlet, coal dust wind inlet, a secondary air inlet;Cyclone furnace lower part is equipped with exhanst gas outlet, and the exhanst gas outlet is connect by flue with coal-burning boiler;Whirlwind furnace bottom is equipped with slag-drip opening, is equipped with liquid slag below the slag-drip opening and is granulated water tank.The utility model additionally provides a kind of municipal refuse cyclone firing coupling coal fired power plant electricity generation system.The utility model uses system of the cyclone furnace coupling large coal-fired boiler as processing domestic waste for the first time, is effectively utilized the calorific value of domestic waste, while reducing garbage disposal cost;Lime-ash after can capture municipal waste combustion by cyclone furnace burning, reduces the pollution to large coal-fired boiler lime-ash;Equipment investment is saved, there is great economic and social benefit.

Description

Municipal refuse cyclone burning system and its coupling coal fired power plant electricity generation system
Technical field
The utility model relates to garbage utilization technical fields, and in particular to a kind of municipal refuse cyclone burning system and its coupling Close coal fired power plant electricity generation system.
Background technique
With mentioning rapidly for the fast development of Chinese society economy, the quickening of urbanization process and living standards of the people The discharge amount of height, domestic waste increases year by year, it is contemplated that arrives the year two thousand twenty, China's municipal refuse annual output is close to 200,000,000 tons.China There is 2/3 city to fall among the encirclement of rubbish at present, " garbage-surrounded city ", which has become, to be restricted many urban developments, influences citizen One of an important factor for quality of life.Domestic waste does not only take up a large amount of soil, destroys urban landscape, and to the mankind The environment depended on for existence causes the pollution of duration, and then constitutes a threat to the health of the mankind.
Urban garbage disposal disposal options mainly have the methods of landfill, compost and burning, 2015 end of the year China cities and towns The ratio that rubbish carries out concentration sanitary landfills, burning and compost is respectively 66%, 31% and 3% (note: to account for harmless treatment total amount Percentage).Sanitary landfills is the main method that China handles rubbish at present, advantage be Installed capital cost is lower, operation at This is lower, technology maturation, the requirement to rubbish are lower, but the disadvantage is that occupy large amount of land resources, percolate processing cost it is higher, Risk of leakage is big, easily causes secondary pollution;Garbage compost is built upon on the basis of separate waste collection, the rubbish master in China To be composting, be not suitable for direct compost, therefore the technology is difficult to promote.Rubbish can significantly be reduced using burning disposal Volume, the volume of rubbish can reduce 90% or so after burning, while it is micro- to burn the various cause of diseases that can be eliminated in rubbish Biology, the calorific value for burning generation can recycle, and incineration method handles domestic waste because having " innoxious, minimizing, resource Change " the advantages that, it is developed rapidly and applies in China.
China has built up multiple Municipal Solid Waste Incineration Plants at present, but domestic waste is directly burned and still deposited Expensive in many problems, such as equipment, initial cost is very high, and garbage disposal is ineffective, and operating cost is high, lacks economy etc. and asks Topic.China is the country using coal as main energy sources, and there are a large amount of large-scale coal fired power plants in various regions, mix burning using Large-sized Coal-fired Power group Domestic waste on the one hand can innoxious, minimizing handle domestic waste, reduce the construction of newly-built garbage burning factory Cost, another aspect Large-sized Coal-fired Power group fuel energy utilization rate is high, can greatly improve the utilization of domestic waste calorific value Efficiency.
Domestic waste is directly burned there are many problems, such as equipment valuableness, and initial cost is very high, garbage disposal effect The problems such as bad, operating cost is high, lacks economy;Domestic waste complicated component directly mixes burning in Large-sized Coal-fired Power group May the lime-ash secondary use to former coal fired power plant have an impact.
Utility model content
The technical problems to be solved in the utility model is how using Large-sized Coal-fired Power group mixed burned with city life rubbish, with drop The processing cost of low domestic waste improves the utilization efficiency of domestic waste calorific value, while reducing to large-scale coal-fired pot The pollution of boiler ash sediment.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is to provide a kind of municipal refuse cyclone firing system System, it is characterised in that: including cyclone furnace, be equipped with garbage fuel import at the top of cyclone furnace, cyclone furnace peripheral wall is from top to bottom successively set There are hot wind inlet, coal dust wind inlet, a secondary air inlet;Cyclone furnace lower part is equipped with exhanst gas outlet, and the exhanst gas outlet passes through Flue is connect with coal-burning boiler;Whirlwind furnace bottom is equipped with slag-drip opening, is equipped with liquid slag below the slag-drip opening and is granulated water tank.
Preferably, equipped with guide vane below the garbage fuel import, above hot wind inlet.
Preferably, slag collecting bunch is equipped in the flue between the cyclone furnace and coal-burning boiler.
Preferably, the hot wind inlet, coal dust wind inlet, a secondary air inlet are outer with cyclone furnace along a tangential direction Wall connection.
When above-mentioned domestic waste cyclone burning system works, step are as follows:
Step 1: rubbish is sent into from the garbage fuel import at the top of cyclone furnace, and hot wind is cut in a manner of direct current from hot wind inlet To cyclone furnace is entered, one swirling eddy is formed, granulated garbage carries out vigorous combustion under the action of swirling eddy;Or rubbish It is directly carried by hot wind from hot wind inlet and tangentially enters vigorous combustion in cyclone furnace in a manner of direct current;
Step 2: coal dust is carried by hot wind and is sent into cyclone furnace by wind inlet of coal dust in a manner of eddy flow, in cyclone furnace Inside forms downward rotation vigorous combustion, so that the temperature in cyclone furnace is maintained certain level, forms one in cyclone furnace Layer slag film;Reach Secondary Air required for completely burned and is classified in feeding cyclone furnace from secondary air inlet with tangential way;Rubbish Rubbish burns to form lime-ash;
Step 3: after the burner hearth that the flue gas after the completion of cyclone furnace internal combustion burning is sent into coal-burning boiler further burns, by purification Processing, is finally discharged in atmosphere;The liquid slag generated in cyclone furnace enters liquid slag granulation water tank and is granulated.
Preferably, in the step 1, rubbish is re-fed into cyclone furnace after classification, screening, desiccation and crushing.
Preferably, in the step 2, the part spout of secondary air inlet is sent into air of the oxygen concentration greater than 21% " oxygen-enriched " air.
The utility model additionally provides a kind of domestic waste cyclone firing coupling coal fired power plant electricity generation system, feature It is: including above-mentioned domestic waste cyclone burning system, air preheater is equipped in the coal-burning boiler back-end ductwork, The hot air outlet of air preheater connects drying garbage screening system heat source import by pipeline, and drying garbage screening system is weary Gas outlet connection secondary waste screening system heat source import, the outlet of secondary waste screening system lack of gas connect the coal-burning boiler;
The outlet of garbage storing storage is equipped with garbage rough grinder, and garbage rough grinder connects drying garbage screening system, rubbish Dry screening system connects rubbish fine powder millstone, and rubbish fine powder millstone connects secondary waste screening system, secondary waste screening system System connection fine grained garbage storing storage and secondary separation garbage storing storage, the fine grained garbage storing storage connection cyclone furnace, two Secondary separating of garbage storage warehouse connects rubbish fine powder millstone.
Preferably, the main-steam outlet of the coal-burning boiler connects steam turbine, and steam turbine connects generator.
Preferably, flue gas processing device is equipped in the coal-burning boiler back-end ductwork.
Preferably, the coal-burning boiler also connects fan outlet by pipeline, and fan inlet connects garbage storing by pipeline Storage.
When above-mentioned domestic waste cyclone firing coupling coal fired power plant electricity generation system works, step are as follows:
Step 1: the main steam pushing turbine that coal-burning boiler ontology comes out drives electrical power generators;Coal-burning boiler ontology The flue gas of interior generation is discharged after purified treatment by chimney;
Step 2: rubbish in garbage storing storage is tentatively sieved after the crushing of garbage rough grinder, after screening can Combustion rubbish enters drying garbage screening system;Using the hot-air of air preheater outlet as heat source, drying garbage is sieved Rubbish in system is dried;Rubbish after drying enters rubbish fine powder millstone and is crushed, and sieves subsequently into secondary waste Subsystem;The lack of gas of drying garbage screening system discharge enter secondary waste screening system, in secondary waste screening system Rubbish carries out regrading using wind method;Combustiblerefuse after screening is sent into the standby burning of fine grained garbage storing storage and is used, and screens out The other rubbish come are sent into secondary separation garbage storing storage and carry out secondary classification processing, secondary classification treated combustiblerefuse weight New rubbish fine powder millstone of being sent into is crushed;Lack of gas feeding coal-burning boiler ontology after secondary waste screening system comes out is fired It burns;
Step 3: the rubbish in fine grained garbage storing storage is sent into cyclone furnace and burns, and the liquid slag for generation of burning enters Liquid slag granulation water tank below cyclone furnace is granulated, and the burner hearth that the flue gas for formation of burning then enters coal-burning boiler is carried out into one Step burning.
The utility model uses system of the cyclone furnace coupling large coal-fired boiler as processing domestic waste for the first time, leads to Crossing cyclone furnace burning can capture the lime-ash after municipal waste combustion, reduce the pollution to large coal-fired boiler lime-ash;Greatly Type coal-burning boiler can then provide hot environment, on the one hand can make the abundant after-flame of the combustible in flue gas, on the other hand can be with Very high fire box temperature is provided, decomposes dioxin sufficiently.
Compared with prior art, system provided by the utility model has the following beneficial effects:
1, incineration treatment of garbage is carried out using cyclone furnace coupling Large-sized Coal-fired Power group, can quickly handles the life of city generation Rubbish living, reduces domestic waste occupied area;
2, the harmless treatment degree of domestic waste is high, and the environmental pollution for efficiently solving domestic waste is asked Topic;
3, the lime-ash after municipal waste combustion is separated with Large-sized Coal-fired Power group lime-ash, considerably reduces city The lime-ash that house refuse generates pollutes the lime-ash of former coal unit, while slag tap granulation can will be in cinder Harmful substance solidified, will not to environment generate secondary pollution;
4, the generating efficiency of Large-sized Coal-fired Power group is high, and the calorific value of domestic waste can carry out efficient utilization;
5, it does not need to establish individual waste incinerator and flue gas purifying equipment, saves equipment investment, have very big Economic benefit and social benefit.
Detailed description of the invention
Fig. 1 is domestic waste cyclone burning system schematic diagram in embodiment 1;
Fig. 2 is that domestic waste cyclone firing couples coal fired power plant electricity generation system schematic diagram in embodiment 2;
Description of symbols:
1- garbage fuel import;2- hot wind inlet;Wind inlet of 3- coal dust;4- secondary air inlet;5- cyclone furnace;6- is caught Slag tube bank;7- liquid slag is granulated water tank;8- coal-burning boiler;9- low-temperature reheater;10- economizer;11- air preheater;12- wind Machine;13- garbage storing storage;14- garbage rough grinder;15- drying garbage screening system;16- rubbish fine powder millstone;17- bis- times Sieving garbage system;18- fine grained garbage storing storage;19- secondary separation garbage storing storage;20- steam turbine;21- generator; 22- condenser;23- externally arranged steam cooler;24- feed-water heater;25- feed pump;The first separating of garbage storage warehouse of 26-;27- Condensate pump;28- oxygen-eliminating device;29- flue gas purification system.
Specific embodiment
The present invention will be further illustrated below in conjunction with specific embodiments.
Embodiment 1
Fig. 1 is the domestic waste cyclone burning system schematic diagram using cyclone firing mixed burned with city life rubbish, institute The domestic waste cyclone burning system stated includes coal-burning boiler 8 and cyclone furnace 5, and cyclone furnace 5 passes through flue and coal-burning boiler 8 Connection.
Garbage fuel import 1 is equipped at the top of cyclone furnace 5,5 peripheral wall of cyclone furnace is from top to bottom successively arranged hot wind inlet 2, coal Wind inlet 3 of powder, secondary air inlet 4.Guide vane is housed above 1 lower part of garbage fuel import, hot wind inlet 2.Cyclone furnace 5 Lower part is equipped with exhanst gas outlet, and the exhanst gas outlet connect by flue with coal-burning boiler 8, connect cyclone furnace 5 and coal-burning boiler 8 it Between flue in be disposed with slag collecting bunch 6.5 bottom of cyclone furnace is equipped with slag-drip opening, is equipped with liquid slag below slag-drip opening and is granulated water tank 7。
The course of work of domestic waste cyclone burning system is as follows:
Rubbish after classification, screening, desiccation and crushing by screw(-type) feeder from the garbage fuel at the top of cyclone furnace 5 into Mouth 1 is sent into, and 1 lower part of garbage fuel import is equipped with guide vane, and hot wind tangentially enters whirlwind from hot wind inlet 2 in a manner of direct current Furnace 5 exports to form one powerful swirling eddy in guide vane, and the granulated garbage come out from guide vane is in swirling eddy Effect is lower to carry out vigorous combustion;Rubbish can also directly by hot wind carry from 2 position of hot wind inlet in a manner of direct current tangentially into Enter vigorous combustion in cyclone furnace 5.
Coal dust is carried by hot wind and is sent into inside cyclone furnace 5 in a manner of eddy flow by wind inlet 3 of coal dust, in cyclone furnace 5 inside form downward rotation vigorous combustion, and effect is that the temperature in cyclone furnace 5 is made to maintain certain level, in whirlwind One layer of slag film is formed in furnace 5, rubbish burns rapidly in the high temperature environment, the lime-ash for formation of burning.
Reach Secondary Air required for completely burned and is classified in feeding cyclone furnace 5 from secondary air inlet 4 with tangential way, two Secondary wind inlet 4 can according to need the air (i.e. air of the oxygen concentration greater than 21%) that " oxygen-enriched " is sent into using part spout, The oxygen concentration in primary zone in cyclone furnace 5 can be made to be greatly improved in this way, oxygen has very big combustion-supporting effect, can to revolve Ignition temperature in wind furnace 5 greatly improves, and avoids in cyclone furnace 5 that temperature is too low to impact slag tap.
It is disposed with slag collecting bunch 6 in flue between connection cyclone furnace 5 and coal-burning boiler 8, the flue gas after the completion of burning is sent Enter the burner hearth of coal-burning boiler 8, is further finally discharged in atmosphere after burning by the flue gas purification device in flue.Cyclone furnace 5 The liquid slag of interior generation enters liquid slag granulation water tank 7 and is granulated.
Embodiment 2
Fig. 2 is the urban life that domestic waste cyclone burning system described in embodiment 1 couples that coal fired power plant is formed Rubbish cyclone firing couples coal fired power plant electricity generation system schematic diagram, the domestic waste cyclone firing coupling coal fired power plant hair Electric system includes domestic waste cyclone burning system described in embodiment 1, and coal-burning boiler 8 connects blower 12 by pipeline and goes out Mouth and the outlet of 17 lack of gas of secondary waste screening system, 12 import of blower connects garbage storing storage 13, for guaranteeing garbage storing storage 13 negative pressure prevent waste odours to external diffusion, influence environment.Low-temperature reheater has been sequentially arranged in 8 back-end ductwork of coal-burning boiler 9, economizer 10, air preheater 11, flue gas processing device 29, the hot air outlet of air preheater 11 connect rubbish by pipeline Rubbish dries 15 heat source import of screening system, 15 lack of gas of drying garbage screening system outlet connection, 17 heat source of secondary waste screening system Import.
The outlet of garbage storing storage 13 is equipped with garbage rough grinder 14, and garbage rough grinder 14 connects drying garbage screening system 15 and first separating of garbage storage warehouse 26, drying garbage screening system 15 connects rubbish fine powder millstone 16, and rubbish fine powder millstone 16 connects Secondary waste screening system 17 is connect, secondary waste screening system 17 connects fine grained garbage storing storage 18 and secondary separation garbage storing Storage 19, fine grained garbage storing storage 18 connect the garbage fuel import of cyclone furnace 5, and secondary separation garbage storing storage 19 connects rubbish Rubbish fine powder millstone 16.
The main-steam outlet of coal-burning boiler 8 connects steam turbine 20, and steam turbine 20 connects generator 21.Steam turbine 20, low temperature Reheater 9, feed-water heater 24, externally arranged steam cooler 23, oxygen-eliminating device 28, feed pump 25, economizer 10, condenser 22, Condensate pumps 27 etc. form boiler steam-water circulation system.
The course of work that domestic waste cyclone firing couples coal fired power plant electricity generation system is as follows:
The high temperature and pressure main steam pushing turbine 20 that 8 ontology of coal-burning boiler comes out drives generator 21,20 row of steam turbine Vapour enters condenser 22, and the flue gas generated in 8 ontology of coal-burning boiler is arranged after the flue gas purification device 29 in flue by chimney Out.
Rubbish in garbage storing storage 13 is tentatively sieved after the crushing of garbage rough grinder 14, after screening can not It fires rubbish to recycle by first separating of garbage storage warehouse 26 and handled using other methods, combustiblerefuse enters drying garbage sieve Subsystem 15 is dried.
The hot-air exported using air preheater 11 carries out the rubbish in drying garbage screening system 15 as heat source It is dry.Rubbish after drying enters rubbish fine powder millstone 16 and is crushed, subsequently into secondary waste screening system 17.Rubbish is dry The lack of gas that dry screening system 15 is discharged enter secondary waste screening system 17, use to the rubbish in secondary waste screening system 17 Wind method carries out regrading, and the combustiblerefuse after screening is sent into the standby burning of fine grained garbage storing storage 18 and is used, and screens out its come Its rubbish is sent into secondary separation garbage storing storage 19 and is handled by secondary classification.Treated that combustiblerefuse is sent again for secondary classification Enter rubbish fine powder millstone 16 to be crushed, non-combustible waste recycling is handled using other methods.Secondary waste screening system 17 come out after lack of gas be sent directly into 8 ontology of coal-burning boiler and burn.
Rubbish in fine grained garbage storing storage 18 is sent into cyclone furnace 5 and burns, and the liquid slag for generation of burning enters rotation The liquid slag granulation water tank 7 of the lower section of wind furnace 5 is granulated, the high-temperature flue gas for formation of burning then enter the burner hearth of coal-burning boiler 8 into The further burning of row.Flue gas in coal-burning boiler 8 successively pass through low-temperature reheater 9 in boiler back end ductwork, economizer 10, It is drained into atmosphere after air preheater 11, flue gas processing device 29.
The above, the only preferred embodiment of the utility model, it is in any form and substantive not to the utility model On limitation, it is noted that for those skilled in the art, in the premise for not departing from the utility model method Under, several improvement and supplement can be also made, these are improved and supplement also should be regarded as the protection scope of the utility model.It is all ripe Professional and technical personnel is known, in the case where not departing from the spirit and scope of the utility model, when using disclosed above Technology contents and the equivalent variations of a little variation, modification and evolution made, be the equivalent embodiment of the utility model;Together When, all substantial technologicals according to the utility model to the variation, modification and evolution of any equivalent variations made by above-described embodiment, In the range of still falling within the technical solution of the utility model.

Claims (7)

1. a kind of municipal refuse cyclone burning system, it is characterised in that: including cyclone furnace (5), be equipped with rubbish at the top of cyclone furnace (5) Fuel inlet (1), cyclone furnace (5) peripheral wall are from top to bottom successively arranged hot wind inlet (2), coal dust wind inlet (3), a Secondary Air Import (4);Cyclone furnace (5) lower part is equipped with exhanst gas outlet, and the exhanst gas outlet is connect by flue with coal-burning boiler (8);Whirlwind Furnace (5) bottom is equipped with slag-drip opening, is equipped with liquid slag granulation water tank (7) below the slag-drip opening.
2. a kind of municipal refuse cyclone burning system as described in claim 1, it is characterised in that: the garbage fuel import (1) lower section, hot wind inlet (2) top are equipped with guide vane.
3. a kind of municipal refuse cyclone burning system as described in claim 1, it is characterised in that: the cyclone furnace (5) and combustion Slag collecting bunch (6) are equipped in flue between coal burning boiler (8).
4. a kind of municipal refuse cyclone burning system as described in claim 1, it is characterised in that: the hot wind inlet (2), coal Wind inlet (3) of powder, secondary air inlet (4) are connect with the outer wall of cyclone furnace (5) along a tangential direction.
5. a kind of municipal refuse cyclone firing couples coal fired power plant electricity generation system, it is characterised in that: including such as Claims 1 to 4 Described in any item municipal refuse cyclone burning systems, coal-burning boiler (8) back-end ductwork is interior to be equipped with air preheater (11), The hot air outlet of air preheater (11) connects drying garbage screening system (15) heat source import, drying garbage sieve by pipeline Subsystem (15) lack of gas outlet connection secondary waste screening system (17) heat source import, secondary waste screening system (17) lack of gas go out Mouth connects the coal-burning boiler (8);
Garbage storing storage (13) outlet is equipped with garbage rough grinder (14), and garbage rough grinder (14) connects drying garbage screening system It unites (15), drying garbage screening system (15) connects rubbish fine powder millstone (16), and rubbish fine powder millstone (16) connects secondary waste Screening system (17), secondary waste screening system (17) connect fine grained garbage storing storage (18) and secondary separation garbage storing storage (19), fine grained garbage storing storage (18) connects the cyclone furnace (5), and secondary separation garbage storing storage (19) connects rubbish fine powder Millstone (16);
The main-steam outlet of the coal-burning boiler (8) connects steam turbine (20), and steam turbine (20) connects generator (21).
6. a kind of municipal refuse cyclone firing as claimed in claim 5 couples coal fired power plant electricity generation system, it is characterised in that: institute Coal-burning boiler (8) is stated also by pipeline connection blower (12) outlet, and blower (12) import connects garbage storing storage by pipeline (13)。
7. such as a kind of municipal refuse cyclone firing coupling coal fired power plant electricity generation system described in claim 5 or 6, feature exists In: flue gas processing device is equipped in coal-burning boiler (8) back-end ductwork.
CN201820305911.9U 2018-03-06 2018-03-06 Municipal refuse cyclone burning system and its coupling coal fired power plant electricity generation system Active CN208332277U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108278617A (en) * 2018-03-06 2018-07-13 上海发电设备成套设计研究院有限责任公司 Municipal refuse cyclone burning system and its coupling coal fired power plant electricity generation system and method
CN114046518A (en) * 2021-09-28 2022-02-15 中国大唐集团科学技术研究院有限公司华东电力试验研究院 Low-calorific-value garbage smoldering treatment system and method based on coal-fired unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108278617A (en) * 2018-03-06 2018-07-13 上海发电设备成套设计研究院有限责任公司 Municipal refuse cyclone burning system and its coupling coal fired power plant electricity generation system and method
CN114046518A (en) * 2021-09-28 2022-02-15 中国大唐集团科学技术研究院有限公司华东电力试验研究院 Low-calorific-value garbage smoldering treatment system and method based on coal-fired unit

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