CN106907719B - A kind of method and system improving refuse thermal value using garbage burning factory waste heat - Google Patents

A kind of method and system improving refuse thermal value using garbage burning factory waste heat Download PDF

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Publication number
CN106907719B
CN106907719B CN201710112705.6A CN201710112705A CN106907719B CN 106907719 B CN106907719 B CN 106907719B CN 201710112705 A CN201710112705 A CN 201710112705A CN 106907719 B CN106907719 B CN 106907719B
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China
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heat
waste heat
garbage
leachate site
garbage pool
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CN201710112705.6A
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CN106907719A (en
Inventor
欧青松
曾贤琼
刘思明
江勇
唐强
吴党生
张洪文
韩树国
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CHONGQING SANFENG ENVIRONMENTAL INDUSTRY GROUP CO LTD
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CHONGQING SANFENG ENVIRONMENTAL INDUSTRY GROUP CO LTD
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44Details; Accessories
    • F23G5/46Recuperation of heat

Abstract

The invention discloses a kind of method and system that refuse thermal value is improved using garbage burning factory waste heat, belong to waste incineration and generating electricity field, this method comprises: implementing to exchange heat to Leachate site through gas cleaning treated tail flue gas waste heat and/or sewerage waste heat using in refuse burning system;The Leachate site after heat exchange is returned again and sprays to garbage pool.The present invention returns in the rubbish material heap sprayed in garbage pool again after implementing heat exchange to percolate using the tail flue gas waste heat and/or sewerage waste heat of refuse burning system, the temperature of rubbish material heap in waste of low heating value power generation by waste combustion factory garbage pool can effectively be improved, facilitate the fermentation of rubbish material heap, draining in garbage pool, to which the calorific value burnt away the refuse into furnace can be improved, and then electricity volume is improved, ultimately help stabilization, the continuous operation of refuse-burning plant.

Description

A kind of method and system improving refuse thermal value using garbage burning factory waste heat
Technical field
The invention belongs to waste incineration and generating electricity technical fields, and in particular to a kind of to improve rubbish using garbage burning factory waste heat The method and system of calorific value.
Background technique
The economic rapid growth in China, items construction obtains great achievement, while also having paid huge resource and environment quilt The cost of destruction adheres to that saving development, Clean Development, security developments have become economy in face of severe resource environment situation Developing important content, " Energy Conservation Law of the People's Republic of China " clearly propose to adhere to economizing on resources and protecting the base of environment This state basic policy, the prominent position for being placed on industrialization, modernization development strategy of building a resource-conserving and environment-friendly society.
Currently, MSW Incineration Plant be equipped with storage rubbish garbage pool, setting original intention be in order to avoid The deficiency for the amount of burning away the refuse in short time and so that incinerator is stopped transport, cause increase open, blowing out number, so that flue gas during this occur Pollutant problem more rambunctious.The house refuse in China generally has the characteristic of " moisture is high, calorific value is low ", in order to guarantee rubbish In incinerator can full combustion, need in garbage pool stack fermentation a period of time, leach partial moisture, to improve into furnace It burns away the refuse calorific value, therefore garbage pool dischargeable capacity was determined according to 7 days or so specified quantity of refuse in common engineering design.Just In the stacking fermentation time of standing meter, the quality of ferment effect depends primarily on rubbish temperature, and temperature is suitble to, and ferment effect is good, Draining effect, the refuse thermal value burned into furnace is opposite just high, helps to realize full factory's steady and continuous and runs.Usually in spring and summer Temperature can satisfy fermentation, draining requirement in autumn, rubbish and garbage pool, but in winter, especially north cold area, rubbish Ji Ru factory temperature is low, is mingled with block even in, causes heap temperature in garbage pool lower, and fermentation, draining effect are poor, greatly The calorific value into furnace rubbish is reduced greatly, this will seriously affect the stabilization of system, continuous operation.Meanwhile garbage burning factory is to dedusting Treated that fume afterheat is not recycled effectively for device;Furthermore the heat of effluent from boiler is not also effectively utilized. Therefore, the present invention is aided with heat exchange Leachate site using the different heat sources that system generates, so as to improve garbage pool material heap attenuation degree, So that refuse thermal value is improved, and then enhance the generated energy of power plant in winter.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of methods for improving refuse thermal value using garbage burning factory waste heat And system extracts the waste heat in tail flue gas and sewerage, is garbage pool or infiltration drip by utilizing conventional garbage incinerator system Liquid provides heat source, and no longer needs separately to be arranged steam or heating device as heat source, to reach thermal energy comprehensive reutilization Effect.
The present invention is achieved through the following technical solutions:
A kind of method improving refuse thermal value using garbage burning factory waste heat provided by the invention, specifically includes: utilizing rubbish Waste heat through gas cleaning treated tail flue gas in rubbish incineration system and or sewerage waste heat Leachate site is implemented to exchange heat; The Leachate site after heat exchange is returned again and sprays to garbage pool.
Preferably, the Leachate site is the Leachate site generated in the incineration plant, and the sewerage is waste heat boiler discharge Sewerage.
Preferably, it is also exchanged heat using the cold air that the waste heat of the tail flue gas imports the external world;It again will heat exchange Hot-air afterwards introduces in garbage pool.
The present invention also provides a kind of systems for improving refuse thermal value using garbage burning factory waste heat, comprising: Leachate site pond, point It is not connected with garbage pool and blowdown system;First Heat Exchanger is gas liquid exchanger, is equipped with exhaust gases passes and fluid passage, institute The entrance for stating fluid passage is connected to Leachate site pond, and outlet is connected to garbage pool, the flue gas by leachate recycle device The entrance in channel is connected in refuse burning system through gas cleaning treated tail flue gas.
Further, the fluid passage entrance and exit of the First Heat Exchanger is respectively arranged with the first temperature sensor and Two temperature sensors, exhaust gases passes entrance and exit are respectively arranged with third temperature sensor and the 4th temperature sensor.
Further, it includes spray assembly that the Leachate site, which returns spray apparatus, and the spray assembly includes being arranged in the rubbish The spray of rubbish material heap injection central in the oriented garbage pool is set side by side on the water pipe for the water pipe of bay wall body top surrounding Mouth.
The present invention also provides another systems for improving refuse thermal value using garbage burning factory waste heat, including the second heat exchange Device is gas-to-gas heat exchanger, is equipped with air duct and exhaust gases passes, and the entrance of the air duct is connected to outside air, goes out Mouth is connected to garbage pool, and the entrance of the exhaust gases passes is connected to tail flue gas.
Advantageous effects of the invention have: first, the present invention by using refuse burning system tail flue gas and or Waste heat boiler sewerage waste heat returns again after exchanging heat to percolate and is sprayed onto garbage pool, for improving waste of low heating value power generation by waste combustion The attenuation degree of rubbish in factory's garbage pool to improve the calorific value burnt away the refuse into furnace, and improves waste incineration electricity volume, and Facilitate stabilization, the continuous operation of refuse-burning plant;Second, tail flue gas waste heat of the present invention by collection refuse burning system After carrying out heat exchange with cold air, the hot-air of acquisition is imported in garbage pool, to improve the environment temperature of garbage pool.
Generally speaking, this method and system process are simple, easy to operate, can solve north of china in winter refuse-burning plant rubbish very well The problem of material heap temperature low influence system in rubbish pond is run.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke To be instructed from the practice of the present invention.Target of the invention and other advantages can be realized by following specification and It obtains.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into The detailed description of one step, in which:
Fig. 1 is the method flow diagram of the embodiment of the present invention;
Fig. 2 is the system schematic of the embodiment of the present invention;
Appended drawing reference: 1- garbage pool, 2- blowdown system, 3- Leachate site pond, 4- First Heat Exchanger, 5- Leachate site return spray dress It sets, 6- chimney valve, 7- chimney, the second heat exchanger of 8-, 9- air blower, the first temperature sensor of 10-, 11- second temperature sensor, 12- flowmeter, 13- Leachate site pump, 14- third temperature sensor, the 4th temperature sensor of 15-, 16- waste heat boiler.
Specific embodiment
Below with reference to attached drawing, a preferred embodiment of the present invention will be described in detail;It should be appreciated that preferred embodiment Only for illustrating the present invention, rather than limiting the scope of protection of the present invention.
A kind of method improving refuse thermal value using garbage burning factory waste heat of the present embodiment, specifically includes: utilizing rubbish In incineration system through gas cleaning treated tail flue gas waste heat and or sewerage waste heat Leachate site is implemented to exchange heat;Again will Leachate site after heat exchange, which returns, sprays to garbage pool.
In this method, also exchanged heat using the cold air that the waste heat of the tail flue gas imports the external world;After exchanging heat Hot-air introduce garbage pool in.
The above method is changed by the tail flue gas waste heat and/or sewerage waste heat of refuse burning system with Leachate site It sprays in garbage pool after friendship heat and heats up in rubbish material heap for it again, winter rubbish material heap temperature can be effectively improved, avoid rubbish The heap temperature low stabilization system influences caused by continuous operation;Simultaneously also using the tail flue gas waste heat and cold air into The hot-air obtained after row heat exchange imports in garbage pool, to improve the environment temperature of garbage pool.This method simple process, operation It is convenient, the low influence system operation of north of china in winter refuse-burning plant garbage pool material heap temperature can be solved the problems, such as very well.
As shown in Figure 1, 2, the present invention also provides a kind of system for improving refuse thermal value using garbage burning factory waste heat, this is System is mainly returned by garbage pool 1, blowdown system 2, diafiltration liquid pool 3, First Heat Exchanger 4, Leachate site for realizing above-mentioned method Spray apparatus 5, chimney valve 6, chimney 7 and waste heat boiler 16 form, wherein the Leachate site pond 3 is expanded with garbage pool 1 and blowdown respectively Container 2 is connected, after collecting from the Leachate site of outflow in garbage pool 1 and/or out of waste heat boiler 16 inflow blowdown system 2 The sewerage of discharge;The First Heat Exchanger 4 is gas liquid exchanger, is equipped with exhaust gases passes and fluid passage, the exhaust gases passes Entrance is connected to the tail flue gas of refuse burning system by chimney valve 6, and outlet is connected to chimney 7;The fluid passage enters Mouth is connected to Leachate site pond 3, and outlet is connected to garbage pool 1 by leachate recycle device 5, for flow into cold conditions percolate with Tail flue gas and/or waste heat boiler sewerage in exhaust gases passes exchange heat after obtaining hot percolate, to rubbish in garbage pool 1 Heap implements the sprinkling of the hot Leachate site;The solution-air heat exchanger uses coiled pipe structure, is made of carbon steel seamless steel tube, snake Shape section of jurisdiction is horizontally disposed, and pipe center line is vertical with flue gas flow rate direction, in-line arrangement, meanwhile, coiled pipe is horizontal positioned, so as to Water can be drained in blowing out, reduces the corrosion during blowing out, and wherein working medium is Leachate site, and working medium is forced flow, adverse current Heat exchange, heat transfer temperature difference is larger, and the coefficient of heat transfer is higher.
Specifically, the Leachate site is the Leachate site generated in incineration plant, the sewerage is the row of waste heat boiler discharge Sewage.The sewerage of waste heat boiler flows into diafiltration liquid pool by drainpipe, and fixed row and the drainpipe of platoon install threeway additional respectively Valve, a branch pipe arrange trench, after another branch pipe converges, drain into Leachate site pond;It, can be to the infiltration in Leachate site pond when sewerage is less Filtrate is aided with the effect of preheating;If sewerage is more, sewerage at this time, which can be aided with Leachate site in Leachate site pond, directly to be added The effect of heat directly can also return spray apparatus by Leachate site and go back to penetrating Leachate site pond without gas liquid exchanger.By adopting With above scheme, the present invention by collect refuse burning system tail flue gas heat and or sewerage waste heat and Leachate site into It sprays in garbage pool after row heat exchange and heats up in rubbish material heap for it again, winter rubbish material heap temperature can be effectively improved, avoid rubbish The rubbish material heap temperature low stabilization system influences caused by continuous operation.
Further include the second heat exchanger 8 in this example, second heat exchanger is gas-to-gas heat exchanger, be equipped with air duct and Exhaust gases passes, the entrance of the air duct are connected to extraneous cold air by air blower 9, and outlet is connected to garbage pool 1, For implementing heat preservation by the hot-air after importing heat exchange in garbage pool 1;Chimney valve 6 described in the entrance of the exhaust gases passes connects It is connected to the tail flue gas of refuse burning system, outlet is connected to chimney 7.The gas-gas heat exchanger uses suction-type structure, the suction The air channel inlet for entering formula structure is provided with air filter (not shown), is negative-pressure operation, can obtain better heat Air outlet slit speed.By using above scheme, the present invention also carries out hot friendship using the heat of the tail flue gas and outside air The hot-air obtained after changing is imported in garbage pool and is kept the temperature for it, to reduce garbage pool winter radiation loss and improve the ring of garbage pool Border temperature, and reach the mesh that comprehensive utilization improves the method and system flue gas heat of refuse thermal value using garbage burning factory waste heat 's.
In the present embodiment, the fluid passage entrance and exit of the First Heat Exchanger 4 is respectively arranged with the first temperature sensing Device 10 and second temperature sensor 11, exhaust gases passes entrance and exit are respectively arranged with third temperature sensor 14 and the 4th temperature Spend sensor 15;And flowmeter 12 is provided between the fluid passage entrance and Leachate site pond 3 of First Heat Exchanger 4.In this way, the One temperature sensor and second temperature sensor and the Leachate site pump 13 chain controls, and infiltration drip is monitored by flowmeter 12 The flow velocity of liquid, so that Leachate site pump 13 can implement aperture regulation according to temperature signal, to control into the liquid in First Heat Exchanger 4 Body flow, and the heat exchange of the Leachate site is controlled, to guarantee effective heat exchange of the percolate flowed out by First Heat Exchanger Temperature, such as 20-70 DEG C;And third temperature sensor and the 4th temperature sensor and the chain connection of the chimney valve 6, so that flue Valve 6 can implement aperture regulation according to temperature signal, to control into the flue gas flow in First Heat Exchanger 4, and drip to the infiltration The heat exchange of liquid is controlled, to guarantee the effective heat-exchange temperature of percolate flowed out by First Heat Exchanger, such as 20-70 DEG C.
In the present embodiment, it includes spray assembly (not shown) that the Leachate site, which returns spray apparatus 5, and the spray assembly includes cloth The water pipe (not shown) in garbage pool wall top surrounding is set, rubbish central in oriented garbage pool is set side by side on the water pipe The nozzle (not shown) of material heap injection, the power output which returns spray apparatus is close to the setting of diafiltration liquid pool exit Leachate site pump 13, delivery pump, booster pump or elevator pump variable frequency adjustment can be used in it.In this way, returning spray apparatus 5 to diafiltration by Leachate site Liquid provides circulation power, and completes injection action by spray assembly.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, it is clear that those skilled in the art Various changes and modifications can be made to the invention by member without departing from the spirit and scope of the present invention.If in this way, of the invention Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to encompass these to these modifications and variations Including modification and variation.

Claims (5)

1. a kind of method for improving refuse thermal value using garbage burning factory waste heat characterized by comprising utilize waste heat boiler Sewerage flows into Leachate site pond to be implemented to exchange heat to Leachate site, using in refuse burning system through gas cleaning treated tail portion Fume afterheat is implemented to exchange heat to Leachate site;Temperature after the Leachate site heat exchange is 20 DEG C -70 DEG C;Again by the Leachate site after heat exchange It returns and sprays to garbage pool;Also exchanged heat using the cold air that the tail flue gas waste heat imports the external world;It again will be after heat exchange Hot-air introduces in the garbage pool.
2. the method according to claim 1 for improving refuse thermal value using garbage burning factory waste heat, which is characterized in that described Leachate site is the Leachate site generated in incineration plant, and the sewerage is the sewerage of waste heat boiler discharge.
3. a kind of system for improving refuse thermal value using garbage burning factory waste heat, which is characterized in that for realizing such as claim 1 The method, comprising:
Leachate site pond (3) is connected with garbage pool (1) and blowdown system (2) respectively;
First Heat Exchanger (4) is gas liquid exchanger, is equipped with exhaust gases passes and fluid passage, and the entrance of the fluid passage connects In the Leachate site pond, outlet is connected to the garbage pool by leachate recycle device (5), the exhaust gases passes Entrance is connected in refuse burning system through gas cleaning treated tail flue gas;
Further include the second heat exchanger (8), is gas-to-gas heat exchanger, is equipped with air duct and exhaust gases passes, the air duct enters Mouth is connected to outside air, and outlet is connected to garbage pool, and the entrance of the exhaust gases passes is connected to tail flue gas.
4. the system according to claim 3 for improving refuse thermal value using garbage burning factory waste heat, which is characterized in that described The fluid passage entrance and exit of First Heat Exchanger is respectively arranged with the first temperature sensor (10) and second temperature sensor (11), exhaust gases passes entrance and exit is respectively arranged with third temperature sensor (14) and the 4th temperature sensor (15).
5. the system according to claim 3 or 4 for improving refuse thermal value using garbage burning factory waste heat, which is characterized in that It includes spray assembly that the Leachate site, which returns spray apparatus, and the spray assembly includes being arranged in garbage pool wall top surrounding The nozzle of rubbish material heap injection central in the oriented garbage pool is set side by side on the water pipe for water pipe.
CN201710112705.6A 2017-02-28 2017-02-28 A kind of method and system improving refuse thermal value using garbage burning factory waste heat Active CN106907719B (en)

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Publication number Priority date Publication date Assignee Title
CN112662549B (en) * 2021-01-19 2022-12-16 深圳市艾瑞德控制技术有限公司 Accurate control system of garbage bin pre-fermentation temperature
CN113217940B (en) * 2021-04-28 2022-09-30 西安热工研究院有限公司 System and method for improving inlet air temperature and fuel calorific value of garbage power station by using geothermal energy
CN115477443A (en) * 2022-09-13 2022-12-16 四川省科源工程技术测试中心 Landfill leachate recharge system

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Publication number Priority date Publication date Assignee Title
CN104501170A (en) * 2014-11-25 2015-04-08 桑德环境资源股份有限公司 Method and system of increasing temperature of garbage piles in leachate sewer of garbage power plant in winter
CN205261576U (en) * 2015-12-09 2016-05-25 安徽中泰创展环境科技有限公司 Rubbish burning power generation system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104501170A (en) * 2014-11-25 2015-04-08 桑德环境资源股份有限公司 Method and system of increasing temperature of garbage piles in leachate sewer of garbage power plant in winter
CN205261576U (en) * 2015-12-09 2016-05-25 安徽中泰创展环境科技有限公司 Rubbish burning power generation system

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