CN102974592A - Thermal hydrolysis and anaerobic digestion processing method for household refuse and device thereof - Google Patents
Thermal hydrolysis and anaerobic digestion processing method for household refuse and device thereof Download PDFInfo
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- CN102974592A CN102974592A CN 201110264282 CN201110264282A CN102974592A CN 102974592 A CN102974592 A CN 102974592A CN 201110264282 CN201110264282 CN 201110264282 CN 201110264282 A CN201110264282 A CN 201110264282A CN 102974592 A CN102974592 A CN 102974592A
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
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- C12M23/58—Reaction vessels connected in series or in parallel
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Abstract
The invention provides a thermal hydrolysis and anaerobic digestion processing method for household refuse and a device thereof. The processing method is used in a device comprises a sorting system, a thermal hydrolysis system, an anaerobic digestion system, a biogas treatment system, a steam supply system and a dewatering system, and comprises the step of first pumping sorted organic refuse into the slurry tank of the thermal hydrolysis system and uniformly mixing, pumping the mixture in the slurry tank into a reaction tank, then pumping the mixture in the reaction tank into a pressure relief tank, and finally importing the mixture in the pressure relief tank into a heat exchanger for cooling. After the mixture obtained via the thermal hydrolysis processing is processed by the anaerobic digestion system, the purposes of harmlessness and reduction of household refuse are ultimately realized. Compared with the prior art, the processing method has advantages of being high in efficiency, low in processing cost, and suitable for continuous operation processing; and by using the method, the dehydration rate of biogas feed can be improved by 30%, thereby reducing transportation costs.
Description
Technical field
The present invention relates to the technical field that solid waste is processed, particularly innoxious, the minimizing disposal technology of one way of life rubbish relate in particular to one way of life rubbish pyrohydrolysis anaerobic digestion handling method and device thereof.
Background technology
The domestic refuse anaerobic digestion techniques be with organic matter under specific anaerobic environment, utilize microorganism with organic substance decomposing, be converted into biogas energy, the natural pond material of generation and sewage are supplied raw materials for preparing composite fertilizer and liquid fertilizer, realize the treatment technology of consumer waste innocent, minimizing, energy.Conventional anaerobic digestion technical finesse house refuse existent defect:
1, send into the organic waste non-sterile that digestion is filled with, the harmful pathogen of natural pond material of generation is eliminated not thorough;
2, anaerobic digestion capacity of decomposition is low;
3, dehydration rate is low, produces the low natural pond material of solid content, improves cost of transportation.
Chinese patent CN200720006576.4 (China Patent Publication No. CN:201024166) (Zhang Chong, Zhang Hua) discloses a kind of method of processing house refuse of the anaerobic ferment devices for the treatment of house refuse, rubbish hoop with mesh is positioned in the fermentation vat, sealing Chi Gai covers above the body of pond, use anaerobic ferment devices that house refuse is processed, the organic matter of degraded in the house refuse, thus reach the purpose of garbage as resource, minimizing, energy.This patent adopts conventional anaerobic digestion technological treatment, exists the anaerobic digestion capacity of decomposition low, and material solid content low and harmful pathogen in natural pond is eliminated halfway shortcoming.
Summary of the invention
Technical problem to be solved by this invention is, the shortcoming and defect that exists in order to overcome prior art provides a kind of house refuse pyrohydrolysis anaerobic digestion handling method of efficient, innoxious, minimizing, the problem that exists to solve prior art.That this processing method has is energy-efficient, processing cost is low, be fit to the advantage of working continuously and processing, and can improve natural pond material dehydration rate 30%, reduces cost of transportation.
Another technical problem to be solved by this invention is to provide above-mentioned one way of life rubbish pyrohydrolysis anaerobic digestion handling method employed device.
Technical problem to be solved by this invention, realize by following technical scheme:
One way of life rubbish pyrohydrolysis anaerobic digestion handling method as a first aspect of the present invention, this processing method comprises in the domestic garbage disposer of separation system, anaerobic digester system, marsh gas treating system, steam supply system, dewatering system one carries out, before entering anaerobic digester system, house refuse is carried out the pyrohydrolysis preliminary treatment, house refuse is sent into the pyrohydrolysis system and is carried out preliminary treatment behind separation system, may further comprise the steps, at first organic waste is pumped into pulp tank mixing, under 97 ℃ of conditions of temperature, be detained 1.5 hours; Then the mixture in the pulp tank is pumped into retort, at pressure 11 bar, under temperature 165 conditions, be detained 20-30 minute; Then the mixture in the retort is pumped into pressure release and fill with, under the condition of 102 ℃ of temperature, be detained 1.5 hours; Mixture input heat exchanger cooling at last pressure release being filled with.
Further, the steam that described retort and pressure release tank produce is sent into the pulp tank, is used for preheating.
Further, the steam that described steam supply system produces is sent into retort, is used for heating.
Device as the one way of life rubbish pyrohydrolysis Anaerobic Digestion of a second aspect of the present invention comprises separation system, pyrohydrolysis system, anaerobic digester system, marsh gas treating system, steam supply system and dewatering system.Described pyrohydrolysis system comprises pulp tank, retort and pressure release filling and heat exchanger, and the organic waste outlet of described separation system is connected with the organic waste entrance of pulp tank; The organic waste outlet of pulp tank is connected with the organic waste entrance of retort; The industrial waste gas entrance that industrial waste gas outlet and the digestion of pulp tank are filled with is connected, the organic waste entrance that organic waste outlet and the pressure release of retort are filled with is connected, the steam (vapor) outlet of retort is connected with the steam inlet of pulp tank, the steam (vapor) outlet that pressure release is filled with is connected with the steam inlet of pulp tank, and the organic waste outlet that pressure release is filled with is connected with the organic waste entrance of heat exchanger; The outlet of the organic waste of heat exchanger is connected with the organic waste entrance of described anaerobic digester system, and the steam (vapor) outlet of described steam supply system is connected with the steam inlet of retort.
Further, described anaerobic digester system comprises digester, input and output pipeline, agitator, and the charging aperture of organic waste places the digester top, and natural pond material outlet places the digester below and is connected with the natural pond material import of dewatering system.
Beneficial effect of the present invention:
1, device used in the present invention finally makes turning household garbage into energy, and behind the pyrohydrolysis high temperature degradation, the difficult organic substance that decomposes is decomposed, and has improved the capacity of decomposition of subsequent anaerobic digestion, and the consumption that organic substance is converted into biogas improves 15%.
2, device used in the present invention finally makes consumer waste innocent, and in the retort in the pyrohydrolysis system, organic waste was detained 20-30 minute under 165 ℃ of conditions, reached the standard of pasteurization and sterilization, finally obtains bioclean natural pond material.
3, device used in the present invention finally makes Domestic Waste Minimization, and after the pyrohydrolysis preliminary treatment, 165 ℃ high temperature has improved degradation rate, the dehydration rate of organic substance, and natural pond slag solid content after treatment improves 30%, and solid amount reduces 50%;
Description of drawings
Figure is one way of life rubbish pyrohydrolysis Anaerobic Digestion process schematic representation.
Separation system 100: rubbish mixing pit 110, plastic fabric screening washer 120, metallic magnetic sorter 130, glass sandstone sorter 140, extruding separator 150, holding vessel 160;
Pyrohydrolysis system 200: pulp tank 210, retort 220, pressure release filling 230, heat exchanger 240;
Anaerobic digester system 300: digestion filling 310, input and output pipeline 320, agitator 330;
Marsh gas treating system 400;
The specific embodiment
By reference to the accompanying drawings, one way of life rubbish pyrohydrolysis anaerobic digestion handling method of the present invention and device thereof are realized that the technical problem of domestic rubbish disposal is further elaborated.
One way of life rubbish pyrohydrolysis Anaerobic Digestion device comprises separation system 100, pyrohydrolysis system 200, anaerobic digester system 300, marsh gas treating system 400, steam supply system 500, dewatering system 600.
In the said apparatus of the present invention, the outlet of the organic waste of described separation system 100 is connected with the organic waste entrance of pulp tank 210; The organic waste outlet of pulp tank 210 is connected with the organic waste entrance of retort 220; The industrial waste gas outlet of pulp tank 210 and the industrial waste gas entrance of digestion filling 310 are connected, the organic waste outlet of retort 220 and the organic waste entrance of pressure release filling 230 are connected, the steam (vapor) outlet of retort 220 is connected with the steam inlet of pulp tank 210, the steam (vapor) outlet of pressure release filling 230 is connected with the steam inlet of pulp tank 210, and the organic waste outlet of pressure release filling 230 is connected with the organic waste entrance of heat exchanger 240; Heat exchanger 240
Organic waste outlet is connected with the organic waste entrance of described anaerobic digester system 300, and the steam (vapor) outlet of described steam supply system 500 is connected with the steam inlet of retort 220.
In the above-mentioned treating apparatus of the present invention, the charging aperture of described anaerobic digester system 300 organic wastes places digester 310 tops, and natural pond material outlet places the digester below and is connected with the natural pond material import of dewatering system 600.
One way of life rubbish pyrohydrolysis anaerobic digestion handling method, the implementation step:
(1) house refuse is sent into the rubbish mixing pit 110 in the separation system 100, enters successively in plastic fabric screening washer 120, metallic magnetic sorter 130, glass sandstone sorter 140, the extruding separator 150 and screens separating treatment, obtains organic waste;
(2) organic waste is pumped into pulp tank 210 mixings, be preheating to 97 ℃, 1.5 hours holdup times;
(3) mixture in the pulp tank 210 is pumped into retort 220, at steam pressure 11 bar, be detained 20-30 minute under the condition that temperature is 165 ℃;
(4) mixture in the retort 220 is pumped into pressure release and fill with 230, under the condition of 102 ℃ of temperature, be detained 1.5 hours;
The mixture input heat exchanger 240 of (5) pressure release being filled with in 230 is lowered the temperature;
(6) input of the mixture in the heat exchanger 240 digestion is filled with 310;
(7) will digest the biogas input marsh gas treating system 400 of filling with generation in 310;
(8) will digest the natural pond material input dewatering system 600 of filling with generation in 310.
In the above-mentioned processing method of the present invention, the steam that described retort 220 and pressure release tank 230 produce is sent into pulp tank 210, is used for preheating.
In the above-mentioned processing method of the present invention, the steam that described steam supply system 500 produces is sent into retort, is used for heating.
Claims (6)
1. one way of life rubbish pyrohydrolysis anaerobic digestion handling method, this processing method comprises in the domestic garbage disposer of separation system, anaerobic digester system, marsh gas treating system, steam supply system, dewatering system one carries out, it is characterized in that: before entering anaerobic digester system, house refuse is carried out the pyrohydrolysis preliminary treatment, may further comprise the steps, at first organic waste is pumped into pulp tank mixing, be detained 1.5 hours; Then the mixture in the pulp tank is pumped into retort, be detained 20-30 minute; Then the mixture in the retort is pumped into pressure release and fill with, be detained 1.5 hours; Mixture input heat exchanger cooling at last pressure release being filled with.
2. one way of life rubbish pyrohydrolysis anaerobic digestion handling method as claimed in claim 1 is characterized in that: temperature is 97 ℃ in the described pulp tank; Temperature in the described retort is 165 ℃, and pressure is 11 bar; Temperature is 102 ℃ in the described pressure release tank.
3. one way of life rubbish pyrohydrolysis anaerobic digestion handling method as claimed in claim 1 is characterized in that: the excess steam in the described retort is sent in the pulp tank, is used for heating.
4. one way of life rubbish pyrohydrolysis anaerobic digestion handling method as claimed in claim 1 is characterized in that: the steam that described steam supply system produces is sent into retort, is used for heating.
5. the device of one way of life rubbish pyrohydrolysis Anaerobic Digestion, comprise separation system, pyrohydrolysis system, anaerobic digester system, marsh gas treating system, steam supply system, dewatering system, it is characterized in that: described pyrohydrolysis system comprises pulp tank, retort and pressure release filling and heat exchanger, and the organic waste outlet of described separation system is connected with the organic waste entrance of pulp tank; The organic waste outlet of pulp tank is connected with the organic waste entrance of retort; The industrial waste gas entrance that industrial waste gas outlet and the digestion of pulp tank are filled with is connected, the organic waste entrance that organic waste outlet and the pressure release of retort are filled with is connected, the steam (vapor) outlet of retort is connected with the steam inlet of pulp tank, the steam (vapor) outlet that pressure release is filled with is connected with the steam inlet of pulp tank, and the organic waste outlet that pressure release is filled with is connected with the organic waste entrance of heat exchanger; The outlet of the organic waste of heat exchanger is connected with the organic waste entrance of described anaerobic digester system, and the steam (vapor) outlet of described steam supply system is connected with the steam inlet of retort.
6. the device of one way of life rubbish pyrohydrolysis Anaerobic Digestion as claimed in claim 5, it is characterized in that: described anaerobic digester system comprises digester, input and output pipeline, agitator, the charging aperture of organic waste places the digester top, and natural pond material outlet places the digester below and is connected with the natural pond material import of dewatering system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110264282 CN102974592A (en) | 2011-09-06 | 2011-09-06 | Thermal hydrolysis and anaerobic digestion processing method for household refuse and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110264282 CN102974592A (en) | 2011-09-06 | 2011-09-06 | Thermal hydrolysis and anaerobic digestion processing method for household refuse and device thereof |
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| CN102974592A true CN102974592A (en) | 2013-03-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3032193A1 (en) * | 2015-02-02 | 2016-08-05 | Degremont | OPTIMIZATION OF A PULP TREATMENT PROCESS |
| CN107879583A (en) * | 2017-12-23 | 2018-04-06 | 北京达源环保科技有限公司 | Sludge pyrohydrolysis and anaerobic digestion integrated treatment process system |
| CN108164311A (en) * | 2018-02-07 | 2018-06-15 | 北京环清环境科技有限公司 | A kind of solid organic fertilizer process units |
| CN108164342A (en) * | 2018-02-07 | 2018-06-15 | 北京环清环境科技有限公司 | A kind of liquid organic fertilizer process units |
| CN108517294A (en) * | 2018-06-05 | 2018-09-11 | 爱土工程环境科技有限公司 | A kind of debirs processing system and processing method |
-
2011
- 2011-09-06 CN CN 201110264282 patent/CN102974592A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3032193A1 (en) * | 2015-02-02 | 2016-08-05 | Degremont | OPTIMIZATION OF A PULP TREATMENT PROCESS |
| WO2016125076A1 (en) * | 2015-02-02 | 2016-08-11 | Degremont | Optimisation of a pulp treatment method |
| US10358368B2 (en) | 2015-02-02 | 2019-07-23 | Suez International | Optimisation of a pulp treatment method |
| CN107879583A (en) * | 2017-12-23 | 2018-04-06 | 北京达源环保科技有限公司 | Sludge pyrohydrolysis and anaerobic digestion integrated treatment process system |
| CN108164311A (en) * | 2018-02-07 | 2018-06-15 | 北京环清环境科技有限公司 | A kind of solid organic fertilizer process units |
| CN108164342A (en) * | 2018-02-07 | 2018-06-15 | 北京环清环境科技有限公司 | A kind of liquid organic fertilizer process units |
| CN108517294A (en) * | 2018-06-05 | 2018-09-11 | 爱土工程环境科技有限公司 | A kind of debirs processing system and processing method |
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Application publication date: 20130320 |