CN103722002B - Based on the consumer waste comprehensively processing method of anaerobic digestion and hydrothermal carbonization - Google Patents
Based on the consumer waste comprehensively processing method of anaerobic digestion and hydrothermal carbonization Download PDFInfo
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- CN103722002B CN103722002B CN201410031722.3A CN201410031722A CN103722002B CN 103722002 B CN103722002 B CN 103722002B CN 201410031722 A CN201410031722 A CN 201410031722A CN 103722002 B CN103722002 B CN 103722002B
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- 238000003763 carbonization Methods 0.000 title claims abstract description 60
- 230000029087 digestion Effects 0.000 title claims abstract description 53
- 238000003672 processing method Methods 0.000 title claims abstract description 22
- 239000002699 waste material Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims description 31
- 230000018044 dehydration Effects 0.000 claims description 25
- 238000006297 dehydration reaction Methods 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 25
- 239000003610 charcoal Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 23
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 15
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000011049 filling Methods 0.000 claims description 6
- 238000007701 flash-distillation Methods 0.000 claims description 6
- 239000010813 municipal solid waste Substances 0.000 abstract description 9
- 238000004064 recycling Methods 0.000 abstract description 5
- 239000003205 fragrance Substances 0.000 abstract description 2
- 244000000010 microbial pathogen Species 0.000 abstract description 2
- 239000010806 kitchen waste Substances 0.000 abstract 1
- 239000003337 fertilizer Substances 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 4
- 239000010791 domestic waste Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 210000004243 sweat Anatomy 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 235000007926 Craterellus fallax Nutrition 0.000 description 1
- 240000007175 Datura inoxia Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005899 aromatization reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
-
- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of Reducing Municipal Solid Waste, energy and recycling processing method, disclose a kind of consumer waste comprehensively processing method based on anaerobic digestion and hydrothermal carbonization, comprise slurried process, anaerobic digestion, hydrothermal carbonization and dehydrate treatment step.The present invention is by house refuse and kitchen waste reduction, energy and recycling treatment, resource recycling degree is high, operating cost is low, clean environment firendly, can guarantee that the pathogenic microorganism in rubbish is killed completely, odorant is transformed decompose, there is good economic worth and social value.
Description
Technical field
The present invention relates to a kind of Reducing Municipal Solid Waste, energy and recycling processing method, particularly relate to a kind of consumer waste comprehensively processing method based on anaerobic digestion and hydrothermal carbonization.
Background technology
Along with the national propelling of urbanization work and the raising of Living consumption, the generation of China's domestic waste surges day by day; According to statistics, to 2010, house refuse year generation in National urban is close to 1.6 hundred million tons.But, due to China's Disposal of Municipal Refuse comparatively backwardness for a long time, auxiliary facility builds insufficient investment, most of house refuse is caused to fail to be processed disposal safely and effectively, domestic waste is arbitrarily stacked and is highlighted with the secondary pollution problem caused thus, and causes the extensive concern of society.
Current, main technology such as employing landfill and burning etc. is disposed in the process of China's domestic waste.Landfill stabilization takies limited land resource, also be difficult to avoid discharging pollutants in air, surface water, underground water and soil environment simultaneously, many countries and regions require increasingly strict to the prevention of secondary pollution of this disposal options, processing cost also increases thereupon.Burning has thorough reduction and can the advantage such as the partially recycled energy.But, because Refuse Incineration Process will produce toxic and harmful, and effective removing of these gases and purification need a large amount of facility to drop into and higher operating cost, thus this technology is faced with " operating cost is high and public's acceptability is poor " two and challenges greatly.
Summary of the invention
The present invention is directed to landfill disposal land occupation resource in prior art, shortcoming that burning disposal operating cost is high, provide a kind of consumer waste comprehensively processing method based on anaerobic digestion and hydrothermal carbonization.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals:
Based on the consumer waste comprehensively processing method of anaerobic digestion and hydrothermal carbonization, comprise the steps:
(1) slurried process: house refuse is delivered in stirring pool, stirring, slurried process 0.5 ~ 1h after water filling, obtaining moisture content is the slurries of 80 ~ 90%;
(2) anaerobic digestion: slurries are pumped into anaerobic digester and carry out anaerobic digestion, the biogas of generation passes into methane boiler burning to produce high-temperature steam, and digestion residue is transported to preheating can the pre-heat treatment 1 ~ 3h, and the pre-heat treatment temperature is 40 ~ 70 DEG C;
(3) hydrothermal carbonization: material after the pre-heat treatment is injected into hydrothermal carbonization tank, 180 ~ 350 DEG C of hot carbonization treatment 0.5 ~ 6h of Water Under;
(4) dehydrate: the material after hydrothermal carbonization process, after mechanical dehydration process, obtains half dry state hydro-thermal charcoal, half dry state hydro-thermal charcoal carries out drying process through heat drying device, obtains dry state hydro-thermal charcoal.
House refuse after slurried process, through anaerobic digestion, organic matter in rubbish is converted into biogas and realizes Domestic Waste Minimization, the natural pond slag produced is through hydrothermal carbonization process, obtain hydro-thermal charcoal, can directly as fertilizer cropland application, also can as producing the aggregate of organic fertilizer or producing the raw material of adsorbent.Hydro-thermal charing process house refuse, compared with traditional waste disposal method, there occurs the reactions such as dehydration, polycondensation, aromatisation, the carbon in the mud after carbonization exists with stable form, not easily decomposes and reduces carbon emission amount; Hydrothermal carbonization reaction is a kind of exothermic process, can be hydrothermal carbonization process and provide part energy, energy consumption is low, the method equipment is simple, easy to operate, application scalability is strong, and the end-product hydro-thermal carbon surface after domestic rubbish disposal contains abundant containing oxygen, nitrogen-containing functional group, be a kind of cheap raw material, can multiple fields be applied to.
As preferably, after step (1) slurried process, slurries are delivered to grid to isolate the block in material, and then are transported in sand-removal device and isolate inorganic foreign material.Sieve out block and inorganic matter in slurries, ensure that reaction is normally carried out.
As preferably, the temperature of step (2) anaerobic digestion controls to be 32 ~ 38 DEG C or 55 ~ 58 DEG C.Anaerobic digestion temperature is selected flexibly according to the optimum temperature of bacterial strain, ensures anaerobic fermentation speed.
As preferably, after the biogas produced first passes into desulfurizer process, pass into methane boiler again in step (2).In biogas containing a certain amount of hydrogen sulfide, hydrogen sulfide is a kind of sour gas, and before biogas combustion, desulfurization can avoid hydrogen sulfide to the pollution of environment, equipment, pipeline and instrument and corrosion.
As preferably, step (2) methane boiler produces steam Transportation in the heat-exchange device of anaerobic digester, hydrothermal carbonization tank and heat drying device.The steam Transportation that methane boiler produces, to heat-exchanger rig, can provide the energy for anaerobic digester, hydrothermal carbonization tank, heat drying device, reduces the energy consumption of domestic rubbish disposal.
As preferably, in step (3), the charge of hydrothermal carbonization tank is 60% ~ 80%.
As preferably, in step (3), add citric acid or acetic acid regulates material pH value in hydrothermal carbonization tank to be 5.0 ~ 6.2.Under acid condition, the stripping quantity of Heavy Metals in Sludge can be increased and improve the output of hydro-thermal carbon.
As preferably, also comprise step-down flash distillation process between step (3) and step (4), the flash-off steam of generation recycles the pre-heat treatment in step (2).Flash-off steam is used for the pre-heat treatment, reduces the energy consumption of whole treatment process, reduces processing cost.
As preferably, in step (4), the moisture content of half dry state hydro-thermal charcoal is 40% ~ 60%.
As preferably, in step (4) mechanical dehydration dehydration liquid reflow step (1) in stirring pool in.Dehydration liquid is led back to stirring pool, the water consumption of whole household-garbage processing process can be reduced, economize on resources, reduce processing cost.
The present invention, owing to have employed above technical scheme, has significant technique effect:
1) resource degree is high: the present invention is integrated with anaerobic digestion and hydrothermal carbonization two kinds of technology carry out recycling treatment to house refuse, and house refuse changes into the biogas with higher energy density and the hydro-thermal charcoal with higher agronomy value the most at last; The hydro-thermal charcoal obtained has the physicochemical property similar with charcoal, both can, directly as fertilizer cropland application, also can be used as produce the aggregate of fertilizer or produce the raw material of adsorbent.
2) operating cost is low: the present invention adds Anaerobic Digestion operation before hydrothermal carbonization treatment process, and anaerobic digestion process is optimized, organic matter about the half in rubbish can be converted into biogas and realize minimizing, drastically reduce the area material treating capacity and the energy consumption of the flow charts such as follow-up hydrothermal carbonization, mechanical dehydration, heat drying, thus significantly reduce operating cost; On the other hand, the power consumption operations such as the biogas that the present invention is produced by burning anaerobic digestion is anaerobic digestion, hydrothermal carbonization, heat drying provide heat, and less needs does not even need supplemented with exogenous fuel, thus reduce further the operating cost of process system.
3) clean environment firendly, obvious environment benefit: house refuse is after anaerobic digestion and the process of hydrothermal carbonization two procedures, and the pathogenic microorganism in rubbish is become extinct completely, and odorant is transformed decomposition; On the other hand, also containing the organic carbon compared with horn of plenty in the hydro-thermal charcoal generated, and exist with stable form, its batching as fertilizer or fertilizer production uses, the content of stability Organic carbon in soil can be increased, thus can improve soil carbon sink potentiality, alleviate greenhouse effects.
Accompanying drawing explanation
Fig. 1 is the process chart of the consumer waste comprehensively processing method based on anaerobic digestion and hydrothermal carbonization of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
Embodiment 1
Based on the consumer waste comprehensively processing method of anaerobic digestion and hydrothermal carbonization, as shown in Figure 1, comprise
(1) slurried process: house refuse is delivered in stirring pool, stirring, slurried process 0.5h after water filling, be delivered to grid subsequently to isolate the bulk noncombustibility such as rubber, plastics in material, and then be transported in sand-removal device foreign material such as isolating the tiny grains of sand, glass, obtaining moisture content is the slurries of 80%;
(2) anaerobic digestion: slurries are pumped into anaerobic digester and carry out anaerobic digestion, the temperature of anaerobic digestion controls to be 32 DEG C, after the biogas produced first passes into desulfurizer process, pass into methane boiler burning again to produce high-temperature steam, digestion residue conveying preheating can the pre-heat treatment 1h, the pre-heat treatment temperature is 70 DEG C;
(3) hydrothermal carbonization: material after the pre-heat treatment is injected into hydrothermal carbonization tank, adding citric acid regulates material pH value in hydrothermal carbonization tank to be 5.0,180 DEG C of hydrothermal carbonization process 6h, mass transport after process is to step-down flash tank, wherein, the flash-off steam produced reclaims, for the pre-heat treatment in step (2);
(4) dehydrate: the material after flash distillation process is after mechanical dehydration process, obtain the half dry state hydro-thermal charcoal that sweat rate is 40%, the dehydration liquid produced is delivered in liquid storage tank, part dehydration liquid is back in the stirring pool in step (1), unnecessary dehydration liquid is used as liquid fertilizer cropland application, half dry state hydro-thermal charcoal carries out drying process through heat drying device again, obtains dry state hydro-thermal charcoal, for the production of the aggregate of fertilizer.
Embodiment 2
Based on the consumer waste comprehensively processing method of anaerobic digestion and hydrothermal carbonization, as shown in Figure 1, comprise
(1) slurried process: house refuse is delivered in stirring pool, stirring, slurried process 1h after water filling, be delivered to grid subsequently to isolate the bulk noncombustibility such as rubber, plastics in material, and then be transported in sand-removal device foreign material such as isolating the tiny grains of sand, glass, obtaining moisture content is the slurries of 90%;
(2) anaerobic digestion: slurries are pumped into anaerobic digester and carry out anaerobic digestion, the temperature of anaerobic digestion controls to be 38 DEG C, after the biogas produced first passes into desulfurizer process, pass into methane boiler burning again to produce high-temperature steam, digestion residue conveying preheating can the pre-heat treatment 3h, the pre-heat treatment temperature is 40 DEG C;
(3) hydrothermal carbonization: material after the pre-heat treatment is injected into hydrothermal carbonization tank, adding acetic acid regulates material pH value in hydrothermal carbonization tank to be 6.2,350 DEG C of hydrothermal carbonization process 0.5h, mass transport after process is to step-down flash tank, wherein, the flash-off steam produced reclaims, for the pre-heat treatment in step (2);
(4) dehydrate: the material after flash distillation process is after mechanical dehydration process, obtain the half dry state hydro-thermal charcoal that sweat rate is 60%, the dehydration liquid produced is delivered in liquid storage tank, part dehydration liquid is back in the stirring pool in step (1), unnecessary dehydration liquid is used as liquid fertilizer cropland application, half dry state hydro-thermal charcoal processes without drying, directly as waste material cropland application.
Embodiment 3
Based on the consumer waste comprehensively processing method of anaerobic digestion and hydrothermal carbonization, as shown in Figure 1, comprise
(1) slurried process: house refuse is delivered in stirring pool, stirring, slurried process 0.8h after water filling, be delivered to grid subsequently to isolate the bulk noncombustibility such as rubber, plastics in material, and then be transported in sand-removal device foreign material such as isolating the tiny grains of sand, glass, obtaining moisture content is the slurries of 83%;
(2) anaerobic digestion: slurries are pumped into anaerobic digester and carry out anaerobic digestion, the temperature of anaerobic digestion controls to be 55 DEG C, after the biogas produced first passes into desulfurizer process, pass into methane boiler burning again to produce high-temperature steam, digestion residue conveying preheating can the pre-heat treatment 1.5h, the pre-heat treatment temperature is 60 DEG C;
(3) hydrothermal carbonization: material after the pre-heat treatment is injected into hydrothermal carbonization tank, adding material pH value in citric acid and acetic acid adjustment hydrothermal carbonization tank is 5.8,200 DEG C of hydrothermal carbonization process 5h, mass transport after process is to step-down flash tank, wherein, the flash-off steam produced reclaims, for the pre-heat treatment in step (2);
(4) dehydrate: the material after flash distillation process is after mechanical dehydration process, obtain the half dry state hydro-thermal charcoal that sweat rate is 47%, the dehydration liquid produced is delivered in liquid storage tank, part dehydration liquid is back in the stirring pool in step (1), unnecessary dehydration liquid is used as liquid fertilizer cropland application, half dry state hydro-thermal charcoal carries out drying process through heat drying device again, obtains dry state hydro-thermal charcoal, for the production of adsorbent material.
Embodiment 4
Based on the consumer waste comprehensively processing method of anaerobic digestion and hydrothermal carbonization, as shown in Figure 1, comprise
(1) slurried process: house refuse is delivered in stirring pool, stirring, slurried process 0.8h after water filling, be delivered to grid subsequently to isolate the bulk noncombustibility such as rubber, plastics in material, and then be transported in sand-removal device foreign material such as isolating the tiny grains of sand, glass, obtaining moisture content is the slurries of 86%;
(2) anaerobic digestion: slurries are pumped into anaerobic digester and carry out anaerobic digestion, the temperature of anaerobic digestion controls to be 58 DEG C, after the biogas produced first passes into desulfurizer process, pass into methane boiler burning again to produce high-temperature steam, digestion residue conveying preheating can the pre-heat treatment 2h, the pre-heat treatment temperature is 55 DEG C;
(3) hydrothermal carbonization: material after the pre-heat treatment is injected into hydrothermal carbonization tank, 260 DEG C of hydrothermal carbonization process 3h, the mass transport after process is to step-down flash tank, and wherein, the flash-off steam of generation reclaims, for the pre-heat treatment in step (2);
(4) dehydrate: the material after flash distillation process is after mechanical dehydration process, obtain the half dry state hydro-thermal charcoal that sweat rate is 54%, the dehydration liquid produced is delivered in liquid storage tank, part dehydration liquid is back in the stirring pool in step (1), unnecessary dehydration liquid is used as liquid fertilizer cropland application, half dry state hydro-thermal charcoal carries out drying process through heat drying device again, obtains dry state hydro-thermal charcoal, is used as fertilizer cropland application.
In a word, the foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (9)
1., based on the consumer waste comprehensively processing method of anaerobic digestion and hydrothermal carbonization, it is characterized in that, comprise the steps:
(1) slurried process: house refuse is delivered in stirring pool, stirring, slurried process 0.5 ~ 1h after water filling, obtaining moisture content is the slurries of 80 ~ 90%;
(2) anaerobic digestion: slurries are pumped into anaerobic digester and carry out anaerobic digestion, the biogas of generation passes into methane boiler burning to produce high-temperature steam, and digestion residue is transported to preheating can the pre-heat treatment 1 ~ 3h, and the pre-heat treatment temperature is 40 ~ 70 DEG C;
(3) hydrothermal carbonization: the material after the pre-heat treatment is injected into hydrothermal carbonization tank, 180 ~ 350 DEG C of hot carbonization treatment 0.5 ~ 6h of Water Under;
(4) dehydrate: the material after hydrothermal carbonization process, after mechanical dehydration process, obtains half dry state hydro-thermal charcoal, half dry state hydro-thermal charcoal carries out drying process through heat drying device, obtains dry state hydro-thermal charcoal;
Adding material pH value in citric acid or acetic acid adjustment hydrothermal carbonization tank in step (3) is 5.0 ~ 6.2.
2. the consumer waste comprehensively processing method based on anaerobic digestion and hydrothermal carbonization according to claim 1, it is characterized in that: after step (1) slurried process, slurries are delivered to grid to isolate the block in material, and then are transported in sand-removal device and isolate inorganic foreign material.
3. the consumer waste comprehensively processing method based on anaerobic digestion and hydrothermal carbonization according to claim 1, is characterized in that: the temperature of step (2) anaerobic digestion controls to be 32 ~ 38 DEG C or 55 ~ 58 DEG C.
4. the consumer waste comprehensively processing method based on anaerobic digestion and hydrothermal carbonization according to claim 1, is characterized in that: pass into methane boiler again after the biogas produced in step (2) first passes into desulfurizer process.
5. the consumer waste comprehensively processing method based on anaerobic digestion and hydrothermal carbonization according to claim 1, is characterized in that: step (2) methane boiler produces steam Transportation in the heat-exchange device of anaerobic digester, hydrothermal carbonization tank and heat drying device.
6. the consumer waste comprehensively processing method based on anaerobic digestion and hydrothermal carbonization according to claim 1, it is characterized in that: in step (3), the charge of hydrothermal carbonization tank is 60% ~ 80%.
7. the consumer waste comprehensively processing method based on anaerobic digestion and hydrothermal carbonization according to claim 1, it is characterized in that: also comprise step-down flash distillation process between step (3) and step (4), the flash-off steam of generation recycles the pre-heat treatment in step (2).
8. the consumer waste comprehensively processing method based on anaerobic digestion and hydrothermal carbonization according to claim 1, is characterized in that: in step (4), the moisture content of half dry state hydro-thermal charcoal is 40% ~ 60%.
9. the consumer waste comprehensively processing method based on anaerobic digestion and hydrothermal carbonization according to claim 1, is characterized in that: in step (4) mechanical dehydration dehydration liquid reflow step (1) in stirring pool in.
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| CN114618870B (en) * | 2022-04-25 | 2023-02-24 | 江苏泓润生物质能科技有限公司 | Multi-source waste resource utilization method |
| CN114804935B (en) * | 2022-06-04 | 2023-11-14 | 开诚同虹环境科技(上海)有限公司 | Method and system for preparing biochar-based organic fertilizer from kitchen waste |
| CN115557515A (en) * | 2022-10-24 | 2023-01-03 | 上海工程技术大学 | Comprehensive utilization system and method for kitchen waste hydrothermal carbonization-anaerobic digestion |
| CN116832779A (en) * | 2023-08-04 | 2023-10-03 | 南京信息工程大学 | Preparation method of solid waste source hydrothermal carbon adsorbent based on compost pretreatment |
| CN117645882A (en) * | 2024-01-29 | 2024-03-05 | 南京沿江资源生态科学研究院有限公司 | Method for preparing biochar by hydrothermal carbonization of human excrement and kitchen waste fermentation residues |
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| CN100415394C (en) * | 2004-04-19 | 2008-09-03 | 吴桐 | Biochemical gas producing and carbonizing integrated treatment process for house refuse |
| WO2008138637A2 (en) * | 2007-05-11 | 2008-11-20 | Suncoal Industries Gmbh | Method and device for hydrothermal carbonization (htc) of biomass using an htc system |
| EP2206688A1 (en) * | 2008-12-16 | 2010-07-14 | Suncoal Industries Gmbh | Thermo-chemical preparation of the process water of a hydrothermal carbonisation |
| EP2474591A1 (en) * | 2011-01-10 | 2012-07-11 | CSL Carbon Solutions Ltd | Synthesis of artificial humic matter by hydrothermal carbonization |
| CN102489496A (en) * | 2011-11-29 | 2012-06-13 | 北京机电院高技术股份有限公司 | Method for carrying out anaerobic digestion on kitchen waste after heat-moisture treatment |
| CN103240264B (en) * | 2012-02-13 | 2016-03-02 | 中国科学院城市环境研究所 | Have the low emission solid organic castoff treatment system of biogas and Activated Carbon Production concurrently |
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