CN105018344A - Biological-chemical circulating biogas fermentation device capable of continuously feeding straws - Google Patents

Biological-chemical circulating biogas fermentation device capable of continuously feeding straws Download PDF

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Publication number
CN105018344A
CN105018344A CN201510469904.3A CN201510469904A CN105018344A CN 105018344 A CN105018344 A CN 105018344A CN 201510469904 A CN201510469904 A CN 201510469904A CN 105018344 A CN105018344 A CN 105018344A
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biological
fermentation
room
chemical
fermentation unit
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雷春生
余静
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Changzhou Yahuan Environmental Protection Technology Co Ltd
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Changzhou Yahuan Environmental Protection Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M21/00Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M29/00Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/18External loop; Means for reintroduction of fermented biomass or liquid percolate
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M35/00Means for application of stress for stimulating the growth of microorganisms or the generation of fermentation or metabolic products; Means for electroporation or cell fusion
    • C12M35/04Mechanical means, e.g. sonic waves, stretching forces, pressure or shear stimuli
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/26Means for regulation, monitoring, measurement or control, e.g. flow regulation of pH
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M45/00Means for pre-treatment of biological substances
    • C12M45/02Means for pre-treatment of biological substances by mechanical forces; Stirring; Trituration; Comminuting
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention provides a biological-chemical circulating biogas fermentation device capable of continuously feeding straws, belonging to the field of energy environment friendliness. When the device is used, raw materials are firstly decomposed to the length of about 2cm by using a separator, and waste residues such as iron wires are discharged from a residue discharging hole; the primarily sheared straws are continuously transferred to a composting chamber through a conveying belt so as to be stored and primarily fermented; then, the primarily sheared straws sequentially enter a chemical fermentation chamber and a biological fermentation chamber so as to be subjected to deep fermentation; and finally, the fermented substance is separated by a three-phase separator, and a liquid reaches the composting chamber through a drain pipe so as to be recycled. By using the biological-chemical circulating biogas fermentation device, the feeding and fermenting continuity is realized, and the gas production period is shortened; fermentation is carried out by respectively using a chemical method and a biological method, so that the gas yield is increased; the liquid is recycled so that the raw materials are recycled; the problems of low gas yield, long gas production period and high energy consumption of the traditional fermentation device are solved; and the biological-chemical circulating biogas fermentation device is suitable for continuously fermenting biogases on a large scale by taking straws as the raw materials.

Description

Continuous stalk charging biological-chemical recycled biogas fermentation unit
Technical field
The present invention relates to field of energy source environment protection, be specifically related to a kind of stalk charging biological-chemical recycled biogas fermentation unit continuously.
Background technology
Agricultural crop straw is one of the abundantest feed resource in the world, whole world annual production about 2,900,000,000 tons, wherein Wheat Straw accounts for 21%, and straw accounts for 19%, Caulis Hordei Vulgaris accounts for 10%, corn stalk accounts for 35%, and straw from rye accounts for 2%, and oat straw accounts for 3%, millet straw accounts for 5 %, Chinese sorghum accounts for 5%, and a large amount of waste straw causes day by day serious problem of environmental pollution, in the urgent need to seeking new outlet.China is agriculture production state maximum in the world, plant husbandry in agriculture production in occupation of very important position.Plant husbandry produces all kinds of crop material about 700,000,000 tons every year, wherein has an appointment 50% not obtain effective disposal and utilization.This not only wastes resource, and due to the open incineration of a large amount of stalk, causes serious topsoil, and initiation fire and affect the operating safety of motorway and civil aviaton.The treatment and utilization of stalk is one of main resources and environment problems of facing of China rural area, therefore in the urgent need to finding new utilization ways.For this reason, the Ministry of Agriculture is classified as stalk marsh gas production technology first of China agriculture and countryside " ten large energy-conserving and emission-cutting technologies ".
At present, the application of stalk in rural energy mainly contains direct burning, compact formed fuel, pyrolytic gasification, combustion power generation, production alcohol fuel etc.Wherein, straw briquette forming fuel and pyrolytic gasification technology (namely usually said " gasification ") are promoted comparatively general in China, be the main path of current stalk recovery energy, other technologies are not yet applied in rural area.Straw briquette forming fuel is easy to store and transport, can replace coal, combustion gas etc. and carry out cooking, heating etc. as domestic fuel, also can be used for heat supply, generating etc., is the important technical solving stalk resource waste and pollute.To stalk pyrolytic gasification technology, China widelys popularize with regard to from the beginning of nineteen ninety, and existing large-scale application.But find many problems in extension process, as need be at high temperature carried out, drop into energy large, Energy Efficiency Ratio is low; Produce tar, secondary pollution is serious; Produce combustible gas calorific value low, can utilising efficiency low; Investment is comparatively large, management and working cost high.Therefore in recent years, various places limit the popularization of this technology successively.Visible, prior art is not existing problem itself, being exactly that processing power is limited, being not enough to the stalk for digesting quantity like this.Therefore research and develop new, better stalk Energy Conversion Technology, just become active demand.
Take stalk as raw material production biogas, sufficient raw, widely distributed, do not limit by Time and place, do not produce the pollutents such as natural pond liquid, tar, waste water and waste gas, full ecological circulation and the efficiency utilization of stalk can be realized.It not only can solve the problem of environmental pollution of a large amount of stalk of China, the biogas production that also can be China opens up new bulk raw material source, for guarantee of supplying raw materials at more extensive and wider popularization biogas, for the building Socialist New service of deeply development, have very broad application prospects.
Summary of the invention
The present invention is directed to the problem that traditional Methane fermentation device for straw factor of created gase is low, the aerogenesis cycle is long, energy consumption is high, provide a kind of stalk charging biological-chemical recycled biogas fermentation unit continuously, solve the continuity problem between charging and fermentation, shorten the aerogenesis cycle, add factor of created gase, achieve the recycle of raw material.
In order to solve the problems of the technologies described above, this device adopts following technical scheme:
Continuous stalk charging biological-chemical recycled biogas fermentation unit, be made up of pretreatment unit, fermentation unit and circular treatment unit, wherein pretreatment unit is made up of separating machine (1), slag-drip opening (2) and travelling belt (3), fermentation unit is made up of stack retting room (4), chemical proving room (5) and biological fermentation room (6), and circular treatment unit is made up of triphase separator (7), air outlet (8), slag-drip opening (9), water shoot (10) and water pump (11).It is characterized in that: separating machine (1) and fermentation unit are coupled together by travelling belt (3), stack retting room (4), chemical proving room (5), biological fermentation room (6) and triphase separator (7) arrange successively from top to bottom, water shoot (10) communication loop processing unit and fermentation unit.
Described fermentation unit inside is provided with ultrasonic wave, has the function of vibrations and cleaning, thus promotes the fermentation of stalk.
Described fermentation unit inside is added with Sulfothiorine, regulates the inside pE of fermentation unit, and to stack retting room (4), carry out water seal between chemical proving room (5) and biological fermentation room (6), guarantees absolute anaerobic environment.
Described fermentation unit internal pH-values by outside on-line monitoring, and is added with buffered soln sodium carbonate and sodium bicarbonate, guarantees the balance of yeasting potential of hydrogen.
Coil pipe is equipped with in described fermentation unit outside, maintains internal temperature between 45 DEG C-53 DEG C.
Described stack retting room (4) inside is added with methyl alcohol and acetic acid nutritive substance, makes water shoot (10) carry the microorganism in the moisture of coming in bring back to life, promotes circulating fermentation.
Adding mass concentration in described biological fermentation room (6) is that 0.3%-0.5% resurrection microorganism is fermented.
Described water shoot (10) built-in water pump (11), promotes that the moisture separated arrives fermentation unit and carries out anotherly taking turns utilization, thus realizes the circulation of materials.
The present invention is compared with other method, and usefulness is:
The invention provides a kind of stalk charging biological-chemical recycled biogas fermentation unit continuously, achieve the continuity between charging and fermentation, shorten the aerogenesis cycle, and ferment through chemistry, biological process respectively, add factor of created gase, the recovery again of liquid, achieves the recycle of raw material.
Principle of the present invention is: by the design of separating machine and stack retting room, carry out pre-treatment and storage to raw material, realizes the continuity between charging and fermentation, shortens fermentation period; By chemical-biological fermentation method, accelerate the aerogenesis time, add factor of created gase; By on-line monitoring, and add the materials such as recoil solution, ensure that the stability of yeasting; By three-phase separator by fermentation after liquid extraction and be transported to fermentation unit, achieve the circulation of materials.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
In accompanying drawing: 1-separating machine, 2-slag-drip opening, 3-travelling belt, 4-stack retting room, 5-chemical proving room, 6-biological fermentation room, 7-triphase separator, 8-air outlet, 9-slag-drip opening, 10-water shoot, 11-water pump.
Embodiment
Be described in further detail the present invention below in conjunction with drawings and Examples, but the invention is not restricted to described embodiment.
The continuous stalk charging biological-chemical recycled biogas fermentation unit of this example as shown in Figure 1, be made up of pretreatment unit, fermentation unit and circular treatment unit, wherein pretreatment unit is made up of separating machine (1), slag-drip opening (2) and travelling belt (3), fermentation unit is made up of stack retting room (4), chemical proving room (5) and biological fermentation room (6), and circular treatment unit is made up of triphase separator (7), air outlet (8), slag-drip opening (9), water shoot (10) and water pump (11).Separating machine (1) and fermentation unit are coupled together by travelling belt (3), stack retting room (4), chemical proving room (5), biological fermentation room (6) and triphase separator (7) arrange successively from top to bottom, water shoot (10) communication loop processing unit and fermentation unit.
This device in use, first with separating machine, feed material degradation is become about 2cm length, and the waste residues such as iron wire are discharged from slag-drip opening, the stalk tentatively shredded is delivered to stack retting room continuously through travelling belt and carries out storage and initial fermentation process, then chemistry is entered successively, biological fermentation room, carry out degree of depth fermentation, in fermenting process, room temp maintains 45 DEG C, biological fermentation indoor add the complex microorganism of 0.3%, last fermented product is separated through triphase separator, liquid arrives stack retting room through water shoot, carry out recycle, waste residue is discharged from slag-drip opening, biogas gathers storage from air outlet.
Show by detecting above-mentioned experimental result, under this environment, factor of created gase reaches 74.5%, and the aerogenesis cycle is 3 days.
The continuous stalk charging biological-chemical recycled biogas fermentation unit of this example as shown in Figure 1, be made up of pretreatment unit, fermentation unit and circular treatment unit, wherein pretreatment unit is made up of separating machine (1), slag-drip opening (2) and travelling belt (3), fermentation unit is made up of stack retting room (4), chemical proving room (5) and biological fermentation room (6), and circular treatment unit is made up of triphase separator (7), air outlet (8), slag-drip opening (9), water shoot (10) and water pump (11).Separating machine (1) and fermentation unit are coupled together by travelling belt (3), stack retting room (4), chemical proving room (5), biological fermentation room (6) and triphase separator (7) arrange successively from top to bottom, water shoot (10) communication loop processing unit and fermentation unit.
This device in use, first with separating machine, feed material degradation is become about 2cm length, and the waste residues such as iron wire are discharged from slag-drip opening, the stalk tentatively shredded is delivered to stack retting room continuously through travelling belt and carries out storage and initial fermentation process, then chemistry is entered successively, biological fermentation room, carry out degree of depth fermentation, in fermenting process, room temp maintains 49 DEG C, biological fermentation indoor add the complex microorganism of 0.4%, last fermented product is separated through triphase separator, liquid arrives stack retting room through water shoot, carry out recycle, waste residue is discharged from slag-drip opening, biogas gathers storage from air outlet.
Show by detecting above-mentioned experimental result, under this environment, factor of created gase reaches 78.4%, and the aerogenesis cycle is 2.5 days.
The continuous stalk charging biological-chemical recycled biogas fermentation unit of this example as shown in Figure 1, be made up of pretreatment unit, fermentation unit and circular treatment unit, wherein pretreatment unit is made up of separating machine (1), slag-drip opening (2) and travelling belt (3), fermentation unit is made up of stack retting room (4), chemical proving room (5) and biological fermentation room (6), and circular treatment unit is made up of triphase separator (7), air outlet (8), slag-drip opening (9), water shoot (10) and water pump (11).Separating machine (1) and fermentation unit are coupled together by travelling belt (3), stack retting room (4), chemical proving room (5), biological fermentation room (6) and triphase separator (7) arrange successively from top to bottom, water shoot (10) communication loop processing unit and fermentation unit.
This device in use, first with separating machine, feed material degradation is become about 2cm length, and the waste residues such as iron wire are discharged from slag-drip opening, the stalk tentatively shredded is delivered to stack retting room continuously through travelling belt and carries out storage and initial fermentation process, then chemistry is entered successively, biological fermentation room, carry out degree of depth fermentation, in fermenting process, room temp maintains 53 DEG C, biological fermentation indoor add the complex microorganism of 0.5%, last fermented product is separated through triphase separator, liquid arrives stack retting room through water shoot, carry out recycle, waste residue is discharged from slag-drip opening, biogas gathers storage from air outlet.
Show by detecting above-mentioned experimental result, under this environment, factor of created gase reaches 80.5%, and the aerogenesis cycle is 2 days.

Claims (8)

1. continuous stalk charging biological-chemical recycled biogas fermentation unit, is made up of pretreatment unit, fermentation unit and circular treatment unit, it is characterized in that: described pretreatment unit is made up of separating machine (1), slag-drip opening (2) and travelling belt (3); Described fermentation unit is made up of stack retting room (4), chemical proving room (5) and biological fermentation room (6); Described circular treatment unit is made up of triphase separator (7), air outlet (8), slag-drip opening (9), water shoot (10) and water pump (11); Described separating machine (1) and fermentation unit are coupled together by travelling belt (3), stack retting room (4), chemical proving room (5), biological fermentation room (6) and triphase separator (7) arrange successively from top to bottom, water shoot (10) communication loop processing unit and fermentation unit.
2. continuous stalk charging biological-chemical recycled biogas fermentation unit according to claim 1, is characterized in that: described fermentation unit inside is provided with ultrasonic wave, has the function of vibrations and cleaning, thus promotes the fermentation of stalk.
3. continuous stalk charging biological-chemical recycled biogas fermentation unit according to claim 1, it is characterized in that: described fermentation unit inside is added with Sulfothiorine, regulate the inside pE of fermentation unit, and to stack retting room (4), between chemical proving room (5) and biological fermentation room (6), carry out water seal, guarantee absolute anaerobic environment.
4. continuous stalk charging biological-chemical recycled biogas fermentation unit according to claim 1, it is characterized in that: described fermentation unit internal pH-values is by outside on-line monitoring, and be added with buffered soln sodium carbonate and sodium bicarbonate, guarantee the balance of yeasting potential of hydrogen.
5. continuous stalk charging biological-chemical recycled biogas fermentation unit according to claim 1, is characterized in that: coil pipe is equipped with in described fermentation unit outside, maintains internal temperature between 45 DEG C-53 DEG C.
6. continuous stalk charging biological-chemical recycled biogas fermentation unit according to claim 1, it is characterized in that: described stack retting room (4) inside is added with methyl alcohol and acetic acid nutritive substance, make water shoot (10) carry the microorganism in the moisture of coming in bring back to life, promote circulating fermentation.
7. continuous stalk charging biological-chemical recycled biogas fermentation unit according to claim 1, is characterized in that: adding mass concentration in described biological fermentation room (6) is that 0.3%-0.5% above-mentioned resurrection microorganism is fermented.
8. continuous stalk charging biological-chemical recycled biogas fermentation unit according to claim 1, it is characterized in that: described water shoot (10) built-in water pump (11), promote that the moisture separated arrives fermentation unit and carries out anotherly taking turns utilization, thus realize the circulation of materials.
CN201510469904.3A 2015-08-04 2015-08-04 Biological-chemical circulating biogas fermentation device capable of continuously feeding straws Pending CN105018344A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101338325A (en) * 2008-08-28 2009-01-07 河南富城生态能源科技有限公司 Process for producing methane by dry-type fermentation of stalks
CN101812481A (en) * 2010-03-11 2010-08-25 张华� Biogas production method
CN102583928A (en) * 2012-01-19 2012-07-18 天津大学 Method for performing mixed fermentation on low-intensity ultrasonically disintegrated sludge and crop straws and application of method in improving mesophilic anaerobic digestion
CN103613262A (en) * 2013-12-13 2014-03-05 广西大学 Method and equipment for processing industrial sludge through ultrasonic wave in combination with Fenton reaction and anaerobic digestion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101338325A (en) * 2008-08-28 2009-01-07 河南富城生态能源科技有限公司 Process for producing methane by dry-type fermentation of stalks
CN101812481A (en) * 2010-03-11 2010-08-25 张华� Biogas production method
CN102583928A (en) * 2012-01-19 2012-07-18 天津大学 Method for performing mixed fermentation on low-intensity ultrasonically disintegrated sludge and crop straws and application of method in improving mesophilic anaerobic digestion
CN103613262A (en) * 2013-12-13 2014-03-05 广西大学 Method and equipment for processing industrial sludge through ultrasonic wave in combination with Fenton reaction and anaerobic digestion

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Application publication date: 20151104