CN100571912C - Biological and the gasification process integrated technique of dewatered city domestic garbage - Google Patents
Biological and the gasification process integrated technique of dewatered city domestic garbage Download PDFInfo
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- CN100571912C CN100571912C CNB2006100518656A CN200610051865A CN100571912C CN 100571912 C CN100571912 C CN 100571912C CN B2006100518656 A CNB2006100518656 A CN B2006100518656A CN 200610051865 A CN200610051865 A CN 200610051865A CN 100571912 C CN100571912 C CN 100571912C
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- 238000002309 gasification Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 40
- 238000000855 fermentation Methods 0.000 claims abstract description 44
- 239000002893 slag Substances 0.000 claims abstract description 33
- 239000005416 organic matter Substances 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 17
- 230000004151 fermentation Effects 0.000 claims abstract description 12
- 238000005516 engineering process Methods 0.000 claims abstract description 10
- 239000000446 fuel Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 29
- 238000011084 recovery Methods 0.000 claims description 15
- 239000002918 waste heat Substances 0.000 claims description 12
- 239000010791 domestic waste Substances 0.000 claims description 10
- 239000010865 sewage Substances 0.000 claims description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 239000004566 building material Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 238000004332 deodorization Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000000567 combustion gas Substances 0.000 claims description 2
- 239000002737 fuel gas Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000005611 electricity Effects 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000011449 brick Substances 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000006148 magnetic separator Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 239000002361 compost Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- -1 stationery Substances 0.000 description 3
- 238000009264 composting Methods 0.000 description 2
- 239000013530 defoamer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The present invention relates to the biological and gasification process integrated technique of a kind of dewatered city domestic garbage.Technology is difficult to fundamentally solve the existing problem of garbage disposal at present.Step of the present invention is: broken bag; Sorting; The gasification that sub-elects is sent into gasification furnace with Recyclable and is carried out gasification process, produces the gasification combustible gas; The organic matter that sub-elects and the garbage leachate of collection are sent into anaerobic fermentation tank and are carried out the anaerobic fermentation of biological processing, and the biogas that fermentation produces as fuel, is sent into the gasification furnace gasification after the natural pond slag drying of fermentation generation after purified treatment; The vacancy of natural pond slag drying energy is provided by attached gas fired-boiler.The inventive method is owing to natural pond slag drying, make the processing up to standard of natural pond liquid be very easy to; Make that by gasification material adaptability is strong, secondary pollution is little, can promote the efficient and the benefit of garbage disposal.
Description
Technical field
The present invention relates to a kind of urban garbage disposal technology, relate in particular to the biological and gasification process integrated technique of a kind of dewatered city domestic garbage.
Background technology
Along with quickening of urbanization process, urban population quantity is constantly expanded, and the generation of domestic waste increases rapidly.Methods such as main at present technology of garbage disposal that adopts such as landfill, compost, burning, and anaerobic fermentation technology fails to popularize in developing country owing to reasons such as operation and construction cost height always.
Traditional garbage loading embeading is handled, and not only takies a large amount of soils, but also can produce as percolate the pollution of water body, the secondary pollutions such as landfill gas discharging in the landfill process.
Because China's rubbish is mixed collection, use the compost of producing without the house refuse of the pre-mixed collection that sorts, fertilizer efficiency is low, impurity is many, content of beary metal is high, cost is high, market outlet is poor, and not good to the treatment effects poisonous, harmful substance such as pathogen in the rubbish, can not make rubbish thoroughly innoxious.
Because moisture height, the calorific value of the primary domestic waste of China are low, directly adopt burning disposal technology, in order to promote fire box temperature, need to add a large amount of auxiliary fuels, auxiliary fuel consumes with station service power consumption rate all higher, and therefore hot income is not high, makes such enterprise relying on government subsidy too much.The direct burning of primary composting also can produce danger wastes such as poisonous lime-ash, particularly flying dust, and imperfect combustion product and noxious material content are higher in the tail gas, and surrounding environment is caused secondary pollution.In addition, excessive interpolation auxiliary fuel does not meet China's regenerative resource policy yet.
Anaerobic fermentation can produce valuable biogas, and secondary pollution is few, is favored by developed country always.But because the anaerobic fermentation cycle is long, it is big jar to hold, the compost deodorization is large-minded behind the fertile soil, station service is high, and natural pond slag mechanical dehydration need consume the flocculating agent and the defoamer of a large amount of costlinesses, the dehydration natural pond liquid processing cost of high COD is high, there is the market outlet problem too in its natural pond slag muck fertilizer, so in developing country the application achievement is arranged seldom.
Therefore, single technology of garbage disposal is difficult to fundamentally solve the existing problem of garbage disposal, and for the resource, minimizing, the innoxious target that realize garbage disposal, it is imperative to seek new trash processing way.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of treatment effeciency height, the little biological and integrated New Process for Treatment of gasification of domestic waste of secondary pollution are provided.
The present invention comprises following steps and content:
Step 1: primary domestic waste is carried out broken bag.
Step 2: the rubbish after the broken bag is carried out physical separation, be divided into organic matter, inorganic matter, gasification with Recyclable and recovery Recyclable.
Described gasification comprises yarn fabric and wooden bamboo in the Recyclable with Recyclable, reclaims with Recyclable to comprise that degassifying is with all the other outer Recyclables of Recyclable.Recovery is directly carried out resource reutilization with Recyclable; Inorganic matter sanitary landfills or as the building materials raw material after collecting.
Step 3: the gasification in the step 2 is sent into gasification furnace with Recyclable carry out gasification process, gasification temperature is 600-900 ℃; The high-temperature fuel gas that gasification produces after waste heat recovery, after gas cleaning device purifies as combustion gas; The lime-ash that gasification produces sanitary landfills or as the building materials raw material after collecting.
Step 4: the organic matter in the step 2 is sent into anaerobic fermentation tank carry out the anaerobic fermentation of biological processing, fermentation temperature is 35-55 ℃.
Step 5: the biogas that the anaerobic fermentation in the step 4 produces is used as fuel after purified treatment; The natural pond slag that fermentation produces is sent into the gasification furnace gasification of step 3 after the waste heat drying that utilization is reclaimed; The vacancy of natural pond slag drying energy provides thermal source by attached gas fired-boiler; The steam condensate that the natural pond slag evaporates enters sewage-treatment plant, discharging after processing up to standard; Fixed gas is delivered to attached gas fired-boiler and is incinerated, or after deodorization device purifies qualified discharge.
Step 6: with the garbage leachate that produces in step 1 and the step 2, the anaerobic fermentation tank of sending into after collecting in the step 4 carries out the anaerobic fermentation of biological processing.
Sorting process is selected the appropriate combination of sorting machineries such as magnetic separator, screening machine, winnowing machine, water concentrator, and this technology is a mature technology, is widely used in the municipal refuse branch and chooses.
According to the sorting technique of " People's Republic of China's prevention and control of environmental pollution by solid wastes method " enforcement manual to component of refuse, domestic waste can be divided into organic matter, inorganic matter and Recyclable three classes.Wherein organic matter comprises animal, plant; Inorganic matter comprises dirt, brick and tile and pottery; Recyclable comprises stationery, plastics, rubber, yarn fabric, glass, metal, wooden bamboo and other.
The present invention separately handles the high heating value rubbish in the composting and organic matter, to organic matter with ooze drop liquid and carry out a biological disposal upon earlier, more dewatered back is merged into the promoting the circulation of qi processing with high heating value rubbish.Biological and the gasification process integrated technique of dewatered city domestic garbage can reach desirable treatment effect to domestic waste, can follow minimizing, resource and innoxious treatment principle, can also promote the efficient and the benefit of garbage disposal.
Biological and the gasification process integrated technique of dewatered city domestic garbage of the present invention, compared with prior art, its advantage is:
(1) to the drying dehydration process of natural pond slag, replace the single-stage or the multi-stage mechanical dewatering process of conventional anaerobic ferment process historic, breakthroughly, saved the flocculating agent and the defoamer of a large amount of costlinesses.
(2) to the drying dehydration process of natural pond slag, sewage disposal can be difficult to biodegradable COD and stay in the dry thing, the small organic molecule that evaporates on a small quantity in the slag steam condensate of natural pond is easy to through conventional sewage treatment process qualified discharge.
(3), the drying and dehydrating of natural pond slag there has been the thermal source guarantee because integrated anaerobic fermentation and gasifying process.
(4) owing to combine gasifying process, to the natural pond slag after the organic anaerobic fermentation of biological processing, after the drying processed, send into the gasification furnace gasification, solved the problem of outlet of natural pond slag, and can this point determine exactly rubbish biological treatment plant normally move vital deciding factor.
(5) owing to combine gasifying process, dried natural pond slag is sent into the gasification furnace gasification, makes the organic matter that enters anaerobic fermentation tank need not careful sorting, allows to contain more impurity, makes sorting process to simplify greatly.
(6), ooze drop liquid and send into anaerobic fermentation tank and carry out anaerobic fermentation of biological and handle owing to combine biological treatment.
(7) gasification is carried out gasification process with Recyclable, because this part refuse thermal value is very high, gasification furnace need not extra auxiliary fuel, energy savings.
(8) rubbish that part is sorted out reclaims, and has improved the resource level of garbage disposal.
(9) the refuse gasification factory of the present invention to having built, sorting and biological treatment factory before can nearby building in addition reach enforcement purpose of the present invention.
(10) the rubbish biological processing plant of the present invention to having built can build gasification factory nearby in addition, reaches enforcement purpose of the present invention.
(11) the present invention need not extra auxiliary fuel, and secondary pollution is few, and the utilization efficiency of heat energy height meets current regenerative resource policy, meets circular economy concept.
The specific embodiment
Below specify the present invention by three embodiment.
Embodiment one:
After 1000 tons/day of primary domestic wastes are carried out broken bag, send into separation system, rubbish need be divided into organic matter, inorganic matter, gasification with Recyclable and recovery Recyclable by handling by sorting mechanical compositions such as magnetic separator, screening machine, winnowing machine, water concentrators.Wherein gasify and comprise yarn fabric and wooden bamboo with Recyclable; Organic matter comprises animal, plant.Recovery comprises metal, glass, stationery, plastics, rubber and other with Recyclable, can directly carry out resource reutilization.Inorganic matter comprises dirt, brick and tile and pottery, sanitary landfills after collecting.
Gasification is sent into gasification furnace with Recyclable and is carried out gasification process.Gasifier temperature is controlled at 600 ℃, and as gas supply, sanitary landfills is collected in slag from gasifying furnace cooling back to the gasification combustible gas through waste heat recovery with after purifying.
Organic matter is sent into anaerobic fermentation tank and is carried out the anaerobic fermentation of biological processing, and fermentation temperature is controlled at 35 ℃.
The biogas that anaerobic fermentation produces after purified treatment as gas supply; The natural pond slag that fermentation produces, the steam that utilizes gasification furnace outlet waste heat boiler to produce carries out drying, and the vacancy of natural pond slag drying energy provides thermal source by attached gas fired-boiler.Dried natural pond slag is sent into the gasification furnace gasification.The water vapour that evaporates in the slag dry run of natural pond is pumped to sewage treatment plant after condensation is collected, fixed gas is qualified discharge after deodorization device purifies.
The garbage leachate that each stage of garbage disposal produces is sent into anaerobic fermentation tank and is carried out biological resolution process after collecting.
Embodiment two:
After 500 tons/day of primary domestic wastes are carried out broken bag, send into separation system, rubbish need be divided into organic matter, inorganic matter, gasification with Recyclable and recovery Recyclable by handling by sorting mechanical compositions such as magnetic separator, screening machine, winnowing machine, water concentrators.Wherein gasify and comprise yarn fabric and wooden bamboo with Recyclable; Organic matter comprises animal, plant.Recovery comprises metal, glass, stationery, plastics, rubber and other with Recyclable, can directly carry out resource reutilization.Inorganic matter comprises dirt, brick and tile and pottery, after collecting as the building materials raw material.
Gasification is sent into gasification furnace with Recyclable and is carried out gasification process.Gasifier temperature is controlled at 900 ℃, and the gasification combustible gas can be for the gas electricity generator generating through waste heat recovery with after purifying, and collect as the building materials raw material slag from gasifying furnace cooling back.
Organic matter is sent into anaerobic fermentation tank and is carried out the anaerobic fermentation of biological processing, and fermentation temperature is controlled at 55 ℃.
The biogas that anaerobic fermentation produces can be for the gas electricity generator generating after purified treatment; The natural pond slag that fermentation produces, the steam that utilizes gasification furnace outlet waste heat boiler and gas electricity generator waste heat boiler to produce carries out drying, and the vacancy of natural pond slag drying energy provides thermal source by attached gas fired-boiler.Dried natural pond slag is sent into the gasification furnace gasification.The water vapour that evaporates in the slag dry run of natural pond is after condensation is collected, and through discharging after the sewage-treatment plant disposal of establishing is up to standard, fixed gas is delivered to attached gas fired-boiler and incinerated.
The garbage leachate that each stage of garbage disposal produces is sent into anaerobic fermentation tank and is carried out biological resolution process after collecting.
Embodiment three:
After 800 tons/day of primary domestic wastes are carried out broken bag, send into separation system, rubbish need be divided into organic matter, inorganic matter, gasification with Recyclable and recovery Recyclable by handling by sorting mechanical compositions such as magnetic separator, screening machine, winnowing machine, water concentrators.Wherein gasify and comprise yarn fabric and wooden bamboo with Recyclable; Organic matter comprises animal, plant.Recovery comprises metal, glass, stationery, plastics, rubber and other with Recyclable, can directly carry out resource reutilization.Inorganic matter comprises dirt, brick and tile and pottery, sanitary landfills after collecting.
Gasification is sent into gasification furnace with Recyclable and is carried out gasification process.Gasifier temperature is controlled at 750 ℃, and the gasification combustible gas can be for the gas electricity generator generating through waste heat recovery with after purifying, slag from gasifying furnace cooling back sanitary landfills.
Organic matter is sent into anaerobic fermentation tank and is carried out the anaerobic fermentation of biological processing, and fermentation temperature is controlled at 40 ℃.
The biogas that anaerobic fermentation produces can be for the gas electricity generator generating after purified treatment; The natural pond slag that fermentation produces, the steam that utilizes gasification furnace outlet waste heat boiler and gas electricity generator waste heat boiler to produce carries out drying, and the vacancy of natural pond slag drying energy provides thermal source by attached gas fired-boiler.Dried natural pond slag is sent into the gasification furnace gasification.The water vapour that evaporates in the slag dry run of natural pond is after condensation is collected, and through discharging after the sewage-treatment plant disposal of establishing is up to standard, fixed gas is delivered to attached gas fired-boiler and incinerated.
The garbage leachate that each stage of garbage disposal produces is sent into anaerobic fermentation tank and is carried out biological resolution process after collecting.
Only be preferred embodiment of the present invention below, but scope of the invention process is not limited.
Claims (1)
1, the biological and gasification process integrated technique of dewatered city domestic garbage is characterized in that this technology comprises following steps:
(1) primary domestic waste is carried out broken bag;
(2) rubbish after the broken bag is carried out physical separation, be divided into organic matter, inorganic matter, gasification Recyclable and recovery Recyclable;
Described gasification comprises yarn fabric and wooden bamboo in the Recyclable with Recyclable, reclaims with Recyclable to comprise that degassifying is with all the other outer Recyclables of Recyclable; Recovery is directly carried out resource reutilization with Recyclable, inorganic matter sanitary landfills or as the building materials raw material after collecting;
(3) gasification in the step (2) is sent into gasification furnace with Recyclable and carry out gasification process, gasification temperature is 600-900 ℃; The high-temperature fuel gas that gasification produces after waste heat recovery, after gas cleaning device purifies as combustion gas; The lime-ash that gasification produces sanitary landfills or as the building materials raw material after collecting;
(4) organic matter in the step (2) is sent into anaerobic fermentation tank and carried out the anaerobic fermentation of biological processing, fermentation temperature is 35-55 ℃;
(5) biogas of the generation of the anaerobic fermentation in the step (4) is used as fuel after purified treatment; The natural pond slag that fermentation produces is sent into the gasification furnace gasification of step (3) after the waste heat drying that utilization is reclaimed; The vacancy of natural pond slag drying energy provides thermal source by attached gas fired-boiler; The steam condensate that the natural pond slag evaporates enters sewage-treatment plant, discharging after processing up to standard; Fixed gas is delivered to attached gas fired-boiler and is incinerated, or after deodorization device purifies qualified discharge;
(6) with the garbage leachate that produces in step (1) and the step (2), the anaerobic fermentation tank of sending into after collecting in the step (4) carries out the anaerobic fermentation of biological processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100518656A CN100571912C (en) | 2006-06-09 | 2006-06-09 | Biological and the gasification process integrated technique of dewatered city domestic garbage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100518656A CN100571912C (en) | 2006-06-09 | 2006-06-09 | Biological and the gasification process integrated technique of dewatered city domestic garbage |
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| Publication Number | Publication Date |
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| CN1857803A CN1857803A (en) | 2006-11-08 |
| CN100571912C true CN100571912C (en) | 2009-12-23 |
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| CNB2006100518656A Expired - Fee Related CN100571912C (en) | 2006-06-09 | 2006-06-09 | Biological and the gasification process integrated technique of dewatered city domestic garbage |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103230929B (en) * | 2013-05-13 | 2015-04-22 | 沈阳航空航天大学 | Dry fermentation and gasification combined treatment system for kitchen waste |
| CN105462620B (en) * | 2015-12-19 | 2018-03-30 | 榆林学院 | Coal dust joint biogas residue gasifies and prepared synthesis gas system altogether |
| CN105462621B (en) * | 2015-12-19 | 2018-03-30 | 榆林学院 | CO2/H2The common gasification system of coal dust joint biogas residue under O steam atmosphere |
| CN107262491B (en) * | 2016-04-07 | 2023-04-14 | 深圳市伟创力拓实业发展有限公司 | Domestic garbage processing method and device |
| CN110760436A (en) * | 2018-07-27 | 2020-02-07 | 福建美天环保科技有限公司 | Domestic waste bio-gasification intelligent device |
| CN109701996A (en) * | 2019-01-29 | 2019-05-03 | 北京云水浩瑞环境科技有限公司 | The system and method for handling house refuse |
| CN109647863A (en) * | 2019-01-29 | 2019-04-19 | 北京云水浩瑞环境科技有限公司 | The system and method for handling house refuse |
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| CN1857803A (en) | 2006-11-08 |
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