CN112628740A - Wet garbage decrement incineration treatment process - Google Patents
Wet garbage decrement incineration treatment process Download PDFInfo
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- CN112628740A CN112628740A CN202011517897.7A CN202011517897A CN112628740A CN 112628740 A CN112628740 A CN 112628740A CN 202011517897 A CN202011517897 A CN 202011517897A CN 112628740 A CN112628740 A CN 112628740A
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- Prior art keywords
- garbage
- incineration
- waste liquid
- wet
- solid
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/12—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating using gaseous or liquid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/10—Drying by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/60—Separating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/80—Shredding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/10—Supplementary heating arrangements using auxiliary fuel
- F23G2204/103—Supplementary heating arrangements using auxiliary fuel gaseous or liquid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
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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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a wet garbage decrement incineration treatment process, which comprises the following steps: step 1, collecting and crushing the pre-selected wet garbage, then sending the wet garbage into a closed fermentation tank for biological fermentation, connecting combustible gas generated in the fermentation process through a pipeline on the fermentation tank, such as an incinerator, and using the combustible gas as supplementary gas, and putting leachate generated in the fermentation process into a waste liquid collecting tank; step 2, feeding the fermented wet garbage into a centrifugal dehydration device for dehydration, and putting waste liquid generated in the dehydration process into a waste liquid collecting pool; step 3, drying the solid garbage formed after centrifugal dehydration, and then screening the solid garbage through a magnetic separation sieve to remove small metal impurities in the garbage; and 4, feeding the screened solid garbage into an incinerator to be used as a raw material for garbage incineration power generation. Through the mode, the total incineration treatment amount of the wet garbage can be reduced, the heat value of the solid garbage during incineration is improved, and the heat energy conversion efficiency during power generation is improved.
Description
Technical Field
The invention relates to the field of waste incineration power generation, in particular to a wet waste reduction incineration treatment process.
Background
With the development of garbage classification activities, people roughly classify garbage generated in life and then place the garbage into a garbage collection device, so that the burden of garbage treatment enterprises is greatly reduced, most of wet garbage is kitchen garbage in life in the pre-classification process, the middle of the wet garbage is rich in moisture, redundant moisture needs to be removed in advance when resource incineration power generation is carried out, and otherwise, the whole unit heat value is low, and the requirement of power generation is difficult to achieve.
Disclosure of Invention
The invention mainly solves the technical problem of providing a wet garbage decrement incineration treatment process, which can improve the garbage heat value during incineration and reduce resource waste.
In order to solve the technical problems, the invention adopts a technical scheme that: the wet garbage decrement incineration treatment process comprises the following steps:
step 1, collecting and crushing the pre-selected wet garbage, then sending the wet garbage into a closed fermentation tank for biological fermentation, connecting combustible gas generated in the fermentation process through a pipeline on the fermentation tank, such as an incinerator, and using the combustible gas as supplementary gas, and putting leachate generated in the fermentation process into a waste liquid collecting tank;
step 2, feeding the fermented wet garbage into a centrifugal dehydration device for dehydration, and putting waste liquid generated in the dehydration process into a waste liquid collecting pool;
step 3, drying the solid garbage formed after centrifugal dehydration, and then screening the solid garbage through a magnetic separation sieve to remove small metal impurities in the garbage;
and 4, feeding the screened solid garbage into an incinerator to be used as a raw material for garbage incineration power generation.
In a preferred embodiment of the present invention, the fermentation process is performed for 3 to 7 days.
In a preferred embodiment of the present invention, the waste liquid generated in step 1 and step 2 is discharged for reuse after meeting the standard requirements after being subjected to multiple biochemical treatments.
In a preferred embodiment of the present invention, before the waste liquid in the waste liquid pool is subjected to biochemical treatment, an oil-water separator is used to separate grease from the waste liquid.
In a preferred embodiment of the present invention, the oil and fat are mixed into the solid waste dried in step 4 again and used as the raw material for waste incineration power generation.
In a preferred embodiment of the present invention, the drying in step 3 uses the waste heat of an incinerator.
In a preferred embodiment of the present invention, in the step 4, before the solid waste is incinerated, a calorific value detection is performed, the detection standard is that the calorific value is not lower than 2000-3000 kcal, if the calorific value is not enough, a heat supplement agent is added to the solid waste, and if the calorific value is too high, the low calorific value solid waste is properly proportioned.
In a preferred embodiment of the present invention, the heat-supplying agent is alcohol or gasoline.
The invention has the beneficial effects that: according to the invention, the wet garbage is subjected to pre-separation to remove excessive moisture, so that invalid components in the garbage are reduced, and then the garbage is subjected to incineration treatment, thereby reducing energy waste in the incineration process, saving resources, reducing residual substances after the wet garbage is combusted, reducing the cost for treating pollutants such as later-stage fly ash and the like, and remarkably improving the efficiency of incineration power generation.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and to clearly and unequivocally define the scope of the present invention.
The embodiment of the invention comprises the following steps:
the wet garbage decrement incineration treatment process is characterized by comprising the following steps of:
step 1, collecting and crushing the pre-selected wet garbage, and then sending the wet garbage into a closed fermentation tank for biological fermentation, wherein the fermentation time in the fermentation tank is 3 days, organic impurities in the garbage are decomposed and pulverized through fermentation, solid matters in the garbage are easier to burn, combustible gas generated in the fermentation process is connected with an incinerator through a pipeline on the fermentation tank and is used as supplementary gas, and leachate generated in the fermentation process is put into a waste liquid collecting tank;
step 2, feeding the fermented wet garbage into a centrifugal dehydration device for dehydration, and putting waste liquid generated in the dehydration process into a waste liquid collecting pool;
step 3, drying the solid garbage formed after centrifugal dehydration by waste heat of an incinerator, and then screening the solid garbage by a magnetic separation sieve to remove small metal impurities in the garbage;
and 4, feeding the screened solid garbage into an incinerator to be used as a raw material for garbage incineration power generation.
And (4) separating grease in the waste liquid by using an oil-water separator before the waste liquid in the waste liquid pool is subjected to biochemical treatment, and mixing the separated grease into the solid garbage dried in the step (4) again to be used as a raw material for garbage incineration power generation. And discharging and recycling the waste liquid after the grease separation after the waste liquid reaches the standard requirement after multiple biochemical treatments. Through the mode, the burden of grease treatment in the waste liquid treatment process is reduced, the waste liquid treatment difficulty is reduced, the overall heat value of garbage can be effectively improved, the furnace temperature during incineration is improved, and the energy conversion efficiency during power generation is improved.
And 4, detecting the heat value of the solid garbage before incineration in the step 4, wherein the detection standard is that the heat value is 2000-3000 kilocalories, and if the heat value is not enough, adding alcohol as a heat supplementing agent into the solid garbage. The furnace temperature is prevented from being too low during combustion, which is not beneficial to the running of a generator, if the heat value is too high, a certain amount of low heat value garbage is mixed, and the furnace temperature is prevented from being too high during combustion, which influences the service life of equipment.
In another embodiment:
the wet garbage decrement incineration treatment process is characterized by comprising the following steps of:
step 1, collecting and crushing the pre-selected wet garbage, and then sending the wet garbage into a closed fermentation tank for biological fermentation, wherein the fermentation time in the fermentation tank is 7 days, organic impurities in the garbage are decomposed and pulverized through fermentation, solid matters in the garbage are easier to burn, combustible gas generated in the fermentation process is connected with an incinerator through a pipeline on the fermentation tank and is used as supplementary gas, and leachate generated in the fermentation process is put into a waste liquid collecting tank;
step 2, feeding the fermented wet garbage into a centrifugal dehydration device for dehydration, and putting waste liquid generated in the dehydration process into a waste liquid collecting pool;
step 3, drying the solid garbage formed after centrifugal dehydration by waste heat of an incinerator, and then screening the solid garbage by a magnetic separation sieve to remove small metal impurities in the garbage;
and 4, feeding the screened solid garbage into an incinerator to be used as a raw material for garbage incineration power generation.
And (4) separating grease in the waste liquid by using an oil-water separator before the waste liquid in the waste liquid pool is subjected to biochemical treatment, and mixing the separated grease into the wet garbage dried in the step (4) again to be used as a raw material for garbage incineration power generation. And discharging and recycling the waste liquid after the grease separation after the waste liquid reaches the standard requirement after multiple biochemical treatments. Through the mode, the burden of grease treatment in the waste liquid treatment process is reduced, the waste liquid treatment difficulty is reduced, the overall heat value of garbage can be effectively improved, the furnace temperature during incineration is improved, and the energy conversion efficiency during power generation is improved.
And 4, detecting the heat value of the solid garbage before incineration in the step 4, detecting the heat value of the medium solid garbage before incineration, wherein the detection standard is that the heat value is 2000-3000 kilocalories, and if the heat value is not enough, adding gasoline as a heat supplement agent into the solid garbage. The furnace temperature is prevented from being too low during combustion, which is not beneficial to the running of a generator, if the heat value is too high, a certain amount of low heat value garbage is mixed, and the furnace temperature is prevented from being too high during combustion, which influences the service life of equipment.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The wet garbage decrement incineration treatment process is characterized by comprising the following steps of:
step 1, collecting and crushing the pre-selected wet garbage, then sending the wet garbage into a closed fermentation tank for biological fermentation, connecting combustible gas generated in the fermentation process through a pipeline on the fermentation tank, such as an incinerator, and using the combustible gas as supplementary gas, and putting leachate generated in the fermentation process into a waste liquid collecting tank;
step 2, feeding the fermented wet garbage into a centrifugal dehydration device for dehydration, and putting waste liquid generated in the dehydration process into a waste liquid collecting pool;
step 3, drying the solid garbage formed after centrifugal dehydration, and then screening the solid garbage through a magnetic separation sieve to remove small metal impurities in the garbage;
and 4, feeding the screened solid garbage into an incinerator to be used as a raw material for garbage incineration power generation.
2. The wet garbage decrement incineration processing technology as claimed in claim 1, wherein the time of the fermentation process is 3-7 days.
3. The wet waste reduction incineration treatment process according to claim 1, wherein the waste liquid generated in the step 1 and the step 2 is discharged for reuse after reaching the standard requirements after being subjected to a plurality of biochemical treatments.
4. The wet garbage weight-reducing incineration processing technology as claimed in claim 3, wherein before the biochemical treatment of the waste liquid in the waste liquid pool, an oil-water separator is used to separate grease from the waste liquid.
5. The wet refuse weight-reducing incineration disposal process according to claim 4, wherein the oil or fat is remixed to the solid refuse dried in the step 4 and used as a raw material for refuse incineration power generation.
6. The wet garbage reduction incineration disposal process of claim 1, wherein the drying in step 3 uses waste heat of an incinerator.
7. The wet refuse decrement incineration treatment process according to claim 1, wherein a calorific value is detected before the incineration of the solid refuse in the step 4, the detection standard is that the calorific value is not lower than 2000-3000 kilocalories, if the calorific value is not enough, a heat supplement agent is added to the solid refuse, and if the calorific value is too high, the low calorific value solid refuse is properly proportioned.
8. The wet garbage reduction incineration disposal process of claim 1, wherein the heat supplying agent is alcohol or gasoline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011517897.7A CN112628740A (en) | 2020-12-21 | 2020-12-21 | Wet garbage decrement incineration treatment process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011517897.7A CN112628740A (en) | 2020-12-21 | 2020-12-21 | Wet garbage decrement incineration treatment process |
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| CN112628740A true CN112628740A (en) | 2021-04-09 |
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| CN202011517897.7A Pending CN112628740A (en) | 2020-12-21 | 2020-12-21 | Wet garbage decrement incineration treatment process |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028595A (en) * | 2012-12-03 | 2013-04-10 | 周鼎力 | Energy utilization method for household garbage |
| CN106090933A (en) * | 2016-06-17 | 2016-11-09 | 北京高能时代环境技术股份有限公司 | The method and device of one way of life waste incineration and generating electricity |
| CN106269788A (en) * | 2016-08-16 | 2017-01-04 | 杭州新世纪能源环保工程股份有限公司 | One way of life garbage burning factory works in coordination with the method that full dose processes changing food waste |
| CN111036643A (en) * | 2019-11-19 | 2020-04-21 | 深圳市能源环保有限公司 | Method for cooperatively treating kitchen waste, household garbage and sludge of sewage plant |
| CN111059540A (en) * | 2019-12-24 | 2020-04-24 | 常熟浦发第二热电能源有限公司 | Household garbage incineration power generation process |
-
2020
- 2020-12-21 CN CN202011517897.7A patent/CN112628740A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028595A (en) * | 2012-12-03 | 2013-04-10 | 周鼎力 | Energy utilization method for household garbage |
| CN106090933A (en) * | 2016-06-17 | 2016-11-09 | 北京高能时代环境技术股份有限公司 | The method and device of one way of life waste incineration and generating electricity |
| CN106269788A (en) * | 2016-08-16 | 2017-01-04 | 杭州新世纪能源环保工程股份有限公司 | One way of life garbage burning factory works in coordination with the method that full dose processes changing food waste |
| CN111036643A (en) * | 2019-11-19 | 2020-04-21 | 深圳市能源环保有限公司 | Method for cooperatively treating kitchen waste, household garbage and sludge of sewage plant |
| CN111059540A (en) * | 2019-12-24 | 2020-04-24 | 常熟浦发第二热电能源有限公司 | Household garbage incineration power generation process |
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Application publication date: 20210409 |