CN102086461A - Method for preparing marsh gas by centralized processing of kitchen waste - Google Patents
Method for preparing marsh gas by centralized processing of kitchen waste Download PDFInfo
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- CN102086461A CN102086461A CN2009102313550A CN200910231355A CN102086461A CN 102086461 A CN102086461 A CN 102086461A CN 2009102313550 A CN2009102313550 A CN 2009102313550A CN 200910231355 A CN200910231355 A CN 200910231355A CN 102086461 A CN102086461 A CN 102086461A
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- Prior art keywords
- changing food
- biogas
- food waste
- producing
- liquid
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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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a method for preparing marsh gas by centralized processing of kitchen waste, which aims to prevent kitchen waste from being made into feeds. The method comprises the following steps: classifying, sterilizing, recovering grease, preparing marsh gas, and separating marsh slag and marsh liquid. According to the steps, the invention can convert kitchen waste into marsh gas resources.
Description
Technical field
The present invention relates to the method that a kind of changing food waste focuses on, particularly a kind of changing food waste focuses on the method for producing biogas.
Background technology
Raising along with quickening of urbanization process and living standards of the people, focusing on more of changing food waste comes into one's own, the processing of changing food waste at present mainly concentrates on the feed processing, being that 02160496.7 Chinese patent " the regenerative feedstuff preparation technology of kitchen castoff " is 200710087078.1 Chinese patent " a kind of treatment process of castoff of food and drink " though adopted different technical process with the patent No. as the patent No., all is that the organism in the changing food waste is partly made feed or fodder additives finally.Organism in the changing food waste is partly made feed or fodder additives, might produce people fowl altogether ill infection or/and the homogeneity problem, so changing food waste to handle feedization controversial always and be difficult to promote.
Summary of the invention
The purpose of this invention is to provide a kind of changing food waste and focus on the method for producing biogas, avoid the above-mentioned problem that might occur.This method is admitted the changing food waste of changing food waste can transport trolley transportation to focus on and is produced biogas.
In order to finish the application's goal of the invention, the present invention by the following technical solutions:
A kind of changing food waste of the present invention focuses on the method for producing biogas, it is characterized in that may further comprise the steps:
(1) classification: changing food waste is at first classified, and the sorting substances more than the diameter 40mm in the changing food waste is come out;
(2) sterilization: the changing food waste after step (1) is handled, adopt pasteurization to carry out disinfection in sterilizing unit;
(3) grease reclaims: utilize vertical centrifugal machine to reclaim the grease in the liquid portion after the sterilization, the grease of recovery accounts for the 0.5%-3% of changing food waste;
(4) produce biogas: grease reclaims all later changing food wastes and gets biogas, and the output of biogas reaches 100-700m
3Biogas/ton dry-matter;
(5) biogas residue and biogas liquid separates: produce biogas mixed solution afterwards and utilize horizontal sludge dewatering equipment to carry out the separation of biogas residue and biogas liquid, the water ratio that separates natural pond, back slag is 60%-70%, and the solid content of natural pond liquid is 1%-3%;
A kind of changing food waste of the present invention focuses on the method for producing biogas, it is characterized in that: classification step in the step (1), changing food waste at first is discharged at material on the apron feeder, the plate of apron feeder is the orifice plate in uniform diameter 5mm hole, waste water in the changing food waste is filtered out, remaining changing food waste is transported to the broken bag material distributing machine by apron feeder, the changing food waste of broken bag material distributing machine outlet directly drops on the rotary conveyor, the rotary conveyor changing food waste that broken bag is later is transported to sieve apparatus, and sieve apparatus sorts out the bulk changing food waste more than the diameter 40mm;
A kind of changing food waste of the present invention focuses on the method for producing biogas, it is characterized in that: the remaining changing food waste of water that filters out in the step (1) and sorting mixes, and enters described step (2) together and carries out disinfection;
A kind of changing food waste of the present invention focuses on the method for producing biogas, it is characterized in that: sterilization in the described step (2) is provided with whipping appts in order to realize the even heating material in disinfection tank;
A kind of changing food waste of the present invention focuses on the method for producing biogas, it is characterized in that: the sterilization needs install more than 3 in the described step (2);
A kind of changing food waste of the present invention focuses on the method for producing biogas, it is characterized in that: after sterilisation step finished in the step (2), whipping appts was out of service, when temperature drops to 50 ℃, earlier 1/4 the liquid on top is discharged, and then changing food waste discharge that will remaining 3/4;
A kind of changing food waste of the present invention focuses on the method for producing biogas, it is characterized in that: 1/4 of the top of discharge liquid after the cooling of step (2) sterilisation step enters step (3) grease recycling step;
A kind of changing food waste of the present invention focuses on the method for producing biogas, it is characterized in that: step (3) grease reclaims 3/4 the changing food waste that remaining liquid is left with step (2) and enters step (4);
A kind of changing food waste of the present invention focuses on the method for producing biogas, it is characterized in that: step (4) is produced biogas, can adopt a phase CSTR anaerobically fermenting or two-phase CSTR anaerobically fermenting to produce biogas;
A kind of changing food waste of the present invention focuses on the method for producing biogas, it is characterized in that: step (4) is produced biogas, and biogas is produced in about 35 ℃ fermentations of temperature or about 55 ℃ fermentations of high temperature in can adopting;
A kind of changing food waste of the present invention focuses on the method for producing biogas, it is characterized in that: step (4) is produced in the firedamp gas equipment can not be provided with heating unit, when the temperature in the device is lower than temperature of reaction, material is returned sterilizing unit with pump heat;
A kind of changing food waste of the present invention focuses on the method for producing biogas, it is characterized in that: step (4) is produced biogas, also heating unit can be set, and directly the changing food waste in installing is heated.
A kind of changing food waste of the present invention focuses on the advantage of the method for producing biogas:
But biochemical substances all is used for producing biogas in 1 changing food waste, not only avoided people fowl that kitchen trash feed may occur altogether ill infection and realized the biogas resource utilization of changing food waste or/and the homogeneity problem;
2 introduce this technology with pasteurization technology, have guaranteed the disinfectant thoroughness;
3 adopt the apron feeder of device orifice plate, earlier water filtration are gone out, for follow-up broken bag cloth and screening provide favourable condition.
4 sterilization temperature-fall periods do not stir, and temperature drops to after 50 ℃, only emits 1/4 butyraceous liquid, have reduced working load for follow-up grease reclaims.
Description of drawings
Fig. 1 focuses on the process frame chart of the method for producing biogas for a kind of changing food waste of the present invention
Embodiment
A kind of changing food waste of the present invention focuses on the method for producing biogas, adopts following following steps:
(1) classification
Changing food waste at first is discharged at material on the apron feeder, the plate of apron feeder is the orifice plate in uniform diameter 5mm hole, water in the changing food waste is filtered out, remaining changing food waste is transported to the broken bag material distributing machine by apron feeder, the changing food waste of broken bag material distributing machine outlet directly drops on the rotary conveyor, the rotary conveyor changing food waste that broken bag is later is transported to sieve apparatus, and sieve apparatus sorts out the bulk changing food waste more than the diameter 40mm; The bulk object can be selected the material of recyclable utilization, remaining direct landfill through simple artificial separation.
(2) sterilization
The remaining changing food waste of water that filters out in the described step (1) and sorting mixes, entering described step (2) together carries out disinfection, adopt pasteurization technology, in order to realize that the even heating material need be provided with whipping appts in sterilizing unit, after sterilisation step finished, whipping appts was out of service, when temperature drops to 50 ℃, earlier 1/4 the liquid on top is discharged, again will remaining 3/4 changing food waste discharge;
(3) grease reclaims
1/4 of the top of discharge liquid enters step (3) grease recycling step after the sterilisation step cooling; The grease that reclaims can be used for producing biofuel, or as industrial raw material;
(4) produce biogas
Step (3) grease reclaims remaining liquid and is left 3/4 changing food waste with step (2) and enters step (4) and produce biogas, produce the step of biogas, can adopt a phase CSTR anaerobically fermenting or two-phase CSTR anaerobically fermenting to produce biogas, biogas was produced in about 35 ℃ fermentations of temperature or about 55 ℃ fermentations of high temperature during leavening temperature can be controlled at, produce in the firedamp gas equipment heating unit can be set, when the temperature in the device is lower than temperature of reaction, material is returned sterilizing unit with pump to be heated, also heating unit can be set separately, the biogas of producing can be used for family fuel through after purifying, compression vehicle is used, incorporate gas distributing system etc. into;
(5) biogas residue and biogas liquid separates
Producing biogas mixed solution afterwards utilizes horizontal sludge dewatering equipment to carry out the separation of biogas residue and biogas liquid, the water ratio that separates natural pond, back slag is 60%-70%, the solid content of natural pond liquid is 1%-3%, isolated natural pond slag can be produced fertilizer through good sample fermentation, product satisfies " the agricultural control criterion of townm refuse ", natural pond liquid is handled through good sample, filters water outlet and satisfies " grade III Standard of composite wastewater discharging " qualified discharge, so be not suitable for reclaiming and be used for agricultural irrigation because of containing more salinity in the liquid of natural pond.
This method is in implementation process, and the leak point of each stink all is provided with negative pressure air-suction device, with the foul smell centralized collection, realizes the stink control to whole technology.
Above embodiment is an explanation of the invention, is not that institute of the present invention restricted portion is referring to claim to the qualification of invention, and under the situation of spirit of the present invention, the present invention can do any type of modification.
Claims (12)
1. a kind of changing food waste of the present invention focuses on the method for producing biogas, it is characterized in that may further comprise the steps:
(1) classification: changing food waste is at first classified, and the sorting substances more than the diameter 40mm in the changing food waste is come out;
(2) sterilization: the changing food waste after step (1) is handled, adopt pasteurization to carry out disinfection in sterilizing unit;
(3) grease reclaims: utilize vertical centrifugal machine to reclaim the grease in the liquid portion after the sterilization, the grease of recovery accounts for the 0.5%-3% of changing food waste;
(4) produce biogas: grease reclaims all later changing food wastes and gets biogas, and the output of biogas reaches 100-700m
3Biogas/ton dry-matter;
(5) biogas residue and biogas liquid separates: produce biogas mixed solution afterwards and utilize horizontal sludge dewatering equipment to carry out the separation of biogas residue and biogas liquid, the water ratio that separates natural pond, back slag is 60%-70%, and the solid content of natural pond liquid is 1%-3%.
2. a kind of changing food waste as claimed in claim 1 focuses on the method for producing biogas, it is characterized in that: classification step in the step (1), changing food waste at first is discharged at material on the apron feeder, the plate of apron feeder is the orifice plate in uniform diameter 5mm hole, waste water in the changing food waste is filtered out, remaining changing food waste is transported to the broken bag material distributing machine by apron feeder, the changing food waste of broken bag material distributing machine outlet directly drops on the rotary conveyor, the rotary conveyor changing food waste that broken bag is later is transported to sieve apparatus, and sieve apparatus sorts out the bulk changing food waste more than the diameter 40mm.
3. focus on the method for producing biogas as claim 1 and 2 described a kind of changing food wastes, it is characterized in that: the remaining changing food waste of water that filters out in the step (1) and sorting mixes, and enters described step (2) together and carries out disinfection.
4. a kind of changing food waste as claimed in claim 1 focuses on the method for producing biogas, it is characterized in that: sterilization in the described step (2) is provided with whipping appts in order to realize the even heating material in disinfection tank.
5. a kind of changing food waste as claimed in claim 1 focuses on the method for producing biogas, it is characterized in that: the sterilization needs install more than 3 in the described step (2).
6. focus on the method for producing biogas as claim 1 and 4 described a kind of changing food wastes, it is characterized in that: after sterilisation step finishes in the step (2), whipping appts is out of service, when temperature drops to 50 ℃, earlier 1/4 the liquid on top is discharged, and then changing food waste discharge that will remaining 3/4.
7. focus on the method for producing biogas as claim 1 and 6 described a kind of changing food wastes, it is characterized in that: 1/4 of the top of discharge liquid after the cooling of step (2) sterilisation step enters step (3) grease recycling step.
8. focus on the method for producing biogas as claim 1,6 and 7 described a kind of changing food wastes, it is characterized in that: step (3) grease reclaims 3/4 the changing food waste that remaining liquid is left with step (2) and enters step (4).
9. a kind of changing food waste as claimed in claim 1 focuses on the method for producing biogas, it is characterized in that: step (4) is produced biogas, can adopt a phase CSTR anaerobically fermenting or two-phase CSTR anaerobically fermenting to produce biogas.
10. a kind of changing food waste as claimed in claim 1 focuses on the method for producing biogas, it is characterized in that: step (4) is produced biogas, and biogas is produced in about 35 ℃ fermentations of temperature or about 55 ℃ fermentations of high temperature in can adopting.
11. focus on the method for producing biogas as claim 1,4 and 5 described a kind of changing food wastes, it is characterized in that: step (4) is produced in the firedamp gas equipment can not be provided with heating unit, when the temperature in the device is lower than temperature of reaction, material is returned sterilizing unit with pump heat.
12. focus on the method for producing biogas as claim 1 and 10 described a kind of changing food wastes, it is characterized in that: step (4) is produced biogas, also heating unit can be set, and directly the changing food waste in installing is heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102313550A CN102086461A (en) | 2009-12-02 | 2009-12-02 | Method for preparing marsh gas by centralized processing of kitchen waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102313550A CN102086461A (en) | 2009-12-02 | 2009-12-02 | Method for preparing marsh gas by centralized processing of kitchen waste |
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| CN102086461A true CN102086461A (en) | 2011-06-08 |
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| CN2009102313550A Pending CN102086461A (en) | 2009-12-02 | 2009-12-02 | Method for preparing marsh gas by centralized processing of kitchen waste |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580850A (en) * | 2012-02-22 | 2012-07-18 | 厦门市荣佳生物科技有限公司 | Early-stage sorting device for kitchen garbage |
| CN102989748A (en) * | 2012-12-12 | 2013-03-27 | 郑州金土地能源科技有限公司 | Method for recycling kitchen waste |
| CN103103214A (en) * | 2012-12-11 | 2013-05-15 | 北京洁绿科技发展有限公司 | Anaerobic treatment method of kitchen garbage |
| CN104588400A (en) * | 2015-01-15 | 2015-05-06 | 首钢环境产业有限公司 | High-temperature aerobic fermentation treatment device for kitchen waste |
| CN106623357A (en) * | 2016-11-25 | 2017-05-10 | 徐浩然 | Kitchen garbage classifying treatment system and method thereof for avoiding same-source pollution |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1923385A (en) * | 2006-09-25 | 2007-03-07 | 上海餐余垃圾处理技术有限公司 | Novel application method of kitchen refuse as resource for ecological cycle aquaculture |
| CN1966166A (en) * | 2005-11-15 | 2007-05-23 | 上海铭新环卫工程科技有限公司 | Six-segment process for kitchen garbage to regenerate grease, bio-natural gas, medicinal fertilizer, feedstuff |
| CN101224999A (en) * | 2008-01-16 | 2008-07-23 | 宝林 | Anaerobic digestion handling method for restaurant garbage |
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2009
- 2009-12-02 CN CN2009102313550A patent/CN102086461A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1966166A (en) * | 2005-11-15 | 2007-05-23 | 上海铭新环卫工程科技有限公司 | Six-segment process for kitchen garbage to regenerate grease, bio-natural gas, medicinal fertilizer, feedstuff |
| CN1923385A (en) * | 2006-09-25 | 2007-03-07 | 上海餐余垃圾处理技术有限公司 | Novel application method of kitchen refuse as resource for ecological cycle aquaculture |
| CN101224999A (en) * | 2008-01-16 | 2008-07-23 | 宝林 | Anaerobic digestion handling method for restaurant garbage |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580850A (en) * | 2012-02-22 | 2012-07-18 | 厦门市荣佳生物科技有限公司 | Early-stage sorting device for kitchen garbage |
| CN103103214A (en) * | 2012-12-11 | 2013-05-15 | 北京洁绿科技发展有限公司 | Anaerobic treatment method of kitchen garbage |
| CN102989748A (en) * | 2012-12-12 | 2013-03-27 | 郑州金土地能源科技有限公司 | Method for recycling kitchen waste |
| CN104588400A (en) * | 2015-01-15 | 2015-05-06 | 首钢环境产业有限公司 | High-temperature aerobic fermentation treatment device for kitchen waste |
| CN104588400B (en) * | 2015-01-15 | 2018-05-18 | 首钢环境产业有限公司 | A kind of kitchen rubbish high temperature aerobic fermentation treatment device |
| CN106623357A (en) * | 2016-11-25 | 2017-05-10 | 徐浩然 | Kitchen garbage classifying treatment system and method thereof for avoiding same-source pollution |
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Application publication date: 20110608 |