CN206418123U - Biogas preparation system - Google Patents

Biogas preparation system Download PDF

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Publication number
CN206418123U
CN206418123U CN201621455674.1U CN201621455674U CN206418123U CN 206418123 U CN206418123 U CN 206418123U CN 201621455674 U CN201621455674 U CN 201621455674U CN 206418123 U CN206418123 U CN 206418123U
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fermentation tank
fermentation
tank
biogas
hole
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穆祥
王西来
彭岩
仝伟峰
王振和
高锋超
苏明生
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Ningxia Renle Hongguang Cogeneration Technology Ltd By Share Ltd
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Ningxia Renle Hongguang Cogeneration Technology Ltd By Share Ltd
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    • 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
    • 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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

A kind of biogas preparation system, including disintegrating apparatus, homogenization device, hydrolysis device, the first fermentation tank, the second fermentation tank, marsh gas recovery device and equipment for separating liquid from solid.Disintegrating apparatus is connected with homogenization device, homogenization device is connected with hydrolysis device, hydrolysis device is connected with the first fermentation tank, first fermentation tank is also connected with the second fermentation tank, marsh gas recovery device is connected with the first fermentation tank, the second fermentation tank, and equipment for separating liquid from solid is connected with the first fermentation tank, the second fermentation tank and hydrolysis device.Above-mentioned biogas preparation system ensures the quick generation biogas that the fermentation compound in the second fermentation tank can be stablized.

Description

Biogas preparation system
Technical field
The utility model is related to biomass fuel production technical field, and in particular to a kind of biogas preparation system.
Background technology
Energy crisis and ecocrisis are the huge problems that current mankind society faces, and profit is occurred in that to solve the above problems With the technology of generating electricity by natural energy:For example solar power generation, wind-driven generator, biomass natural pond generate electricity.
Wherein, it is to administer organic waste pollution and the exploitation highly effective skill of regenerative resource that biomass natural pond, which generates electricity, Art.Biogas is to use the various organic substances such as human and animal excreta, stalk, sewage under anaerobic, by the fermentation of microorganism, is divided Solution, transformation and a kind of mixed gas generated.Fermentation is complicated biochemical change, has many microorganisms to participate in.Instead Should substantially in two stages:(1)Microorganism is the carbohydrate in complicated organic substance, fat, protein degradation into simple thing Matter, such as lower fatty acid, alcohol, aldehyde, carbon dioxide, ammonia, hydrogen and hydrogen sulfide.(2)By the effect of methane strain, make some letters Single material becomes methane.Because this gas is swampy, so referred to as biogas at first.In biogas it is main into It is methane and carbon dioxide to divide, and wherein methane accounts for 60%-70%, and carbon dioxide accounts for 30%-40%, also a small amount of hydrogen, an oxidation The gases such as carbon, hydrogen sulfide, oxygen and nitrogen, the utilization of current biogas is primarily used to combustion power generation.
Traditional biogas fermentation device generally comprises hydraulic type biomass pool, float cover type biogas generating pit etc., and fermentation raw material, which enters, to be detested Aerobe fermentation aerogenesis room is at the dynamic vibration of static state or part, there is the technical problem that aerogenesis is unstable, efficiency is low.
The content of the invention
In view of this, it is necessary to which the biogas preparation system of a kind of aerogenesis stabilization and efficiency high is provided.
A kind of biogas preparation system, including disintegrating apparatus, homogenization device, hydrolysis device, the first fermentation tank, the second fermentation Tank, marsh gas recovery device and equipment for separating liquid from solid.Disintegrating apparatus is connected with homogenization device, and homogenization device connects with hydrolysis device Connect, hydrolysis device is connected with the first fermentation tank, the first fermentation tank is also connected with the second fermentation tank, marsh gas recovery device and the first hair Fermentation tank, the connection of the second fermentation tank, equipment for separating liquid from solid are connected with the first fermentation tank, the second fermentation tank and hydrolysis device;It is broken to set It is standby to crush lignocellulose raw material to obtain the first fermentation raw material;Homogenization device is by the first fermentation raw material and animal wastes material Homogeneous is mixed to obtain the second fermentation raw material, the second fermentation raw material is delivered to hydrolysis device;Hydrolysis device is by the second proferment Decomposed after material and zymogenic bacteria mixing to obtain hydrolysis compound, and hydrolysis compound is conveyed to the first fermentation tank; Hydrogen-producing acetogens are mixed and further decomposed to obtain containing formic acid, acetic acid and methanol by the first fermentation tank with hydrolysis compound Ferment compound and the material containing hydrogen and carbon dioxide gaseous state, and the fermentation compound containing formic acid, acetic acid and methanol is defeated The second fermentation tank is delivered to, and gaseous material is conveyed to marsh gas recovery device;Second fermentation tank is to containing formic acid, acetic acid and first The fermentation compound of alcohol adds methane bacteria culture fluid, and is transported to marsh gas recovery device the thing containing hydrogen and carbon dioxide gaseous state Continuing fermentation after matter mixing, to produce biogas;What marsh gas recovery device the first fermentation tank of recovery was provided contains hydrogen and carbon dioxide Gaseous material, and removal of impurities processing is carried out to the material containing hydrogen and carbon dioxide gaseous state, and hydrogen and two will be contained after deoxidation The gaseous material of carbonoxide is conveyed to the second fermentation tank;Marsh gas recovery device also reclaims the biogas produced by the second fermentation tank, and Biogas row produced by entering the second fermentation tank of recovery is purified to obtain methane.Equipment for separating liquid from solid is by the first fermentation tank, The slurries that two fermentation tanks are produced carry out lock out operation, to obtain corresponding biogas residue and biogas slurry.
It is preferred that, equipment for separating liquid from solid is also connected with homogenization device, and the biogas slurry of acquisition is conveyed to by equipment for separating liquid from solid Homogenization device, homogenization device is by biogas slurry, the first fermentation raw material, animal wastes material mixing homogeneous to obtain the second proferment Material.
It is preferred that, marsh gas recovery device includes gas knot screen, Marsh gas purifying device, and gas knot screen, which is obtained, to be contained The material of hydrogen and carbon dioxide gaseous state, and to being conveyed to the second fermentation after the material progress deoxidation containing hydrogen and carbon dioxide gaseous state Tank;Marsh gas purifying device obtains the biogas produced by the second fermentation tank, and the biogas obtained carries out alkali lye spraying removing carbon dioxide And after hydrogen sulfide, then low-temperature water removal is to obtain methane.
It is preferred that, the first fermentation tank includes fermentation tank, hydrogenesis and acetogenesis bacteria culture fluid feeding mechanism, the side of fermentation tank First through hole and charging hole are provided with wall, first through hole passes through close to the bottom of fermentation tank, the first through hole of fermentation tank Pipeline is connected with the tank body of the second fermentation tank, and charging hole is set close to the top of fermentation tank, charging hole by pipeline with homogenizing Standby connection;The top of fermentation tank sets the second through hole and third through-hole, and hydrogenesis and acetogenesis bacteria culture fluid feeding mechanism is arranged on The top of fermentation tank, the woven hose of hydrogenesis and acetogenesis bacteria culture fluid feeding mechanism stretches into fermentation from the second through hole of fermentation tank In tank body, fluid hole is provided with the tube wall of the woven hose in fermentation tank;Third through-hole passes through pipeline and methane recovery Device is connected.
It is preferred that, the second fermentation tank includes being provided with the 4th on fermentation tank, methane backeria culture tank, the side wall of fermentation tank Through hole, relief hole, biogas slurry access aperture, fourth hole, relief hole lead to close to the bottom of fermentation tank, the fourth hole of fermentation tank Piping is connected with the tank body of the first fermentation tank, and relief hole is connected by pipeline with equipment for separating liquid from solid;Biogas slurry access aperture passes through Pipeline is connected with methane backeria culture tank, and the biogas slurry in fermentation tank is delivered in methane backeria culture tank;The top of fermentation tank Portion sets fifth hole and the 6th through hole, and the woven hose of methane backeria culture tank stretches into fermentation tank from the fifth hole of fermentation tank In, fluid hole is provided with the tube wall of the woven hose in fermentation tank, the 6th through hole passes through pipeline and Marsh gas purifying device Connection;Biogas slurry inoculation methane backeria in methane backeria culture tank produces methane bacteria culture fluid, and utilizes woven hose by methane backeria culture Liquid is transported in fermentation tank, so that biogas slurry is fully fermented.
It is preferred that, biogas preparation system also includes conveying device, and the delivery end of conveying device sequentially passes through the first fermentation tank The first through hole of fermentation tank, the fourth hole of the fermentation tank of the second fermentation tank, the delivery end of conveying device passes through spiral Fermentation compound in the fermentation tank of first fermentation tank is delivered in the second fermentation tank by mode of movement.
It is preferred that, conveying device includes motor, sealed chamber, spiral propeller and sealing gas feeding mechanism;Sealed chamber It is fixed on the side wall of the first fermentation tank, the fixing end of spiral propeller enters sealed chamber after being passed from the side wall of the first fermentation tank It is fixedly connected with the output end of motor, spiral propeller sequentially passes through the first through hole of the fermentation tank of the first fermentation tank, The fourth hole of the fermentation tank of two fermentation tanks;Sealing gas feeding mechanism is connected with sealed chamber, with lasting offer sealing gas To prevent the fermentation compound in the first fermentation tank from penetrating into sealed chamber.
It is preferred that, Marsh gas purifying device includes sour gas cancellation element, cooling dewatering unit and negative pressure and provides device, acid Property gas cancellation element is connected with the fermentation tank of the second fermentation tank, and cooling dewatering unit is connected with sour gas cancellation element, Negative pressure provides device and is connected with cooling dewatering unit, so as to negative pressure is produced in sour gas cancellation element, cooling dewatering unit, acid Property gas cancellation element include offering gas access holes at the top of tank body, sprayer unit, tank body and through hole, gas access holes Connected by pipeline with the fermentation tank of the second fermentation tank, the fog-spray nozzle of sprayer unit enters tank body from through hole, with to entering The biogas of tank body is sprayed, and the alkaline mist sprayed by spraying absorbs to be opened up on the sour gas in biogas, the side wall of tank body There is gas discharge outlet, the gas entrance of cooling dewatering unit is connected with the gas discharge outlet on the side wall of tank body, cooled dehydrated Device includes pipeline and the height that is arranged in pipeline gradually incremental cooling fin, and cooling fin offers pod apertures, and the of pipeline One end is fixedly connected with the side wall of tank body, and the second end of pipeline is higher than the first end of pipeline, cold so when biogas is by pipeline But piece makes after the vapor cooling liquid in biogas, is flowed back to by the pod apertures of cooling fin in tank body.
In above-mentioned biogas preparation system, lignocellulose raw material is crushed using disintegrating apparatus to obtain the first proferment Material, using homogenization device by the first fermentation raw material with animal wastes material mixing homogeneous to obtain the second fermentation raw material, utilize water Solution equipment is decomposed after mixing the second fermentation raw material and zymogenic bacteria to obtain hydrolysis compound, and the first fermentation tank will be produced Hydrogen acetogen is mixed with hydrolysis compound and further decomposed to obtain the fermentation compound containing formic acid, acetic acid and methanol and contain There is the material of hydrogen and carbon dioxide gaseous state, and the fermentation compound containing formic acid, acetic acid and methanol be delivered to the second fermentation tank, And gaseous material is conveyed to marsh gas recovery device, the second fermentation tank is to the fermentation compound containing formic acid, acetic acid and methanol Methane bacteria culture fluid is added, and is transported to after the material mixing containing hydrogen and carbon dioxide gaseous state and persistently sends out with marsh gas recovery device Ferment, to produce biogas;Marsh gas recovery device reclaims the material containing hydrogen and carbon dioxide gaseous state that the first fermentation tank is provided, and right Material containing hydrogen and carbon dioxide gaseous state carries out removal of impurities processing, and by the material containing hydrogen and carbon dioxide gaseous state after deoxidation It is conveyed to the second fermentation tank;Marsh gas recovery device also reclaims the biogas produced by the second fermentation tank, and to entering the second hair of recovery Biogas row produced by fermentation tank purifies to obtain methane, so can be stably come the fermentation compound that ensures in the second fermentation tank Quickly produce biogas.
Brief description of the drawings
Fig. 1 is the high-level schematic functional block diagram of the biogas preparation system of a better embodiment.
Fig. 2 is the structure connection diagram of Fig. 1 biogas preparation system.
Fig. 3 is the polycrystalline substance schematic diagram of the first fermentation tank.
In figure:Biogas preparation system 10, disintegrating apparatus 11, homogenization device 12, hydrolysis device 13, the first fermentation tank 14, Fermentation tank 140, hydrogenesis and acetogenesis bacteria culture fluid feeding mechanism 141, woven hose 142, the second fermentation tank 15, fermentation tank 150, Methane backeria culture tank 151, woven hose 152, marsh gas recovery device 16, gas knot screen 160, Marsh gas purifying device 161, acidity It is gas cancellation element 162, tank body 1620, sprayer unit 1621, fog-spray nozzle 1622, cooling dewatering unit 163, pipeline 1630, cold But piece 1631, negative pressure provide device 164, equipment for separating liquid from solid 17, conveying device 18, motor 180, sealed chamber 181, spiral and pushed away Enter device 182, sealing gas feeding mechanism 183.
Embodiment
Referring to Fig. 1 and Fig. 3, biogas preparation system 10 includes disintegrating apparatus 11, homogenization device 12, hydrolysis device 13rd, the first fermentation tank 14, the second fermentation tank 15, marsh gas recovery device 16 and equipment for separating liquid from solid 17.
Disintegrating apparatus 11 is connected with homogenization device 12, and homogenization device 12 is connected with hydrolysis device 13, hydrolysis device 13 It is connected with the first fermentation tank 14, the first fermentation tank 14 is also connected with the second fermentation tank 15, marsh gas recovery device 16 and first ferments Tank 14, the second fermentation tank 15 are connected, and equipment for separating liquid from solid 17 connects with the first fermentation tank 14, the second fermentation tank 15 and hydrolysis device 13 Connect;Disintegrating apparatus 11 crushes lignocellulose raw material to obtain the first fermentation raw material;Homogenization device 12 is by the first proferment Second fermentation raw material, to obtain the second fermentation raw material, is delivered to hydrolysis device 13 by material with animal wastes material mixing homogeneous;Hydrolysis Equipment 13 is decomposed after mixing the second fermentation raw material and zymogenic bacteria nutrient solution to obtain hydrolysis compound, and will hydrolysis Compound is conveyed to the first fermentation tank 14;Hydrogenesis and acetogenesis bacteria culture fluid is mixed into one by the first fermentation tank 14 with hydrolysis compound Step is decomposed to obtain the fermentation compound containing formic acid, acetic acid and methanol and the material containing hydrogen and carbon dioxide gaseous state, and will Fermentation compound containing formic acid, acetic acid and methanol is delivered to the second fermentation tank 15, and gaseous material is conveyed into biogas time Receiving apparatus 16;Second fermentation tank 15 adds methane bacteria culture fluid, and and natural pond to the fermentation compound containing formic acid, acetic acid and methanol Gas recovering device 16 is transported to continuing fermentation after the material mixing containing hydrogen and carbon dioxide gaseous state, to produce biogas;Biogas is returned Receiving apparatus 16 reclaims the material containing hydrogen and carbon dioxide gaseous state that the first fermentation tank 14 is provided, and to containing hydrogen and carbon dioxide Gaseous material carries out removal of impurities processing, and the material containing hydrogen and carbon dioxide gaseous state after deoxidation is conveyed into the second fermentation tank 15, such as removing the oxygen being mingled with brought into from hydrolysis device 13.Marsh gas recovery device 16 also reclaims the institute of the second fermentation tank 15 The biogas of generation, and the biogas row produced by entering the second fermentation tank of recovery is purified to obtain methane.Equipment for separating liquid from solid 17 The slurries that first fermentation tank 14, the second fermentation tank 15 are produced carry out lock out operation, to obtain corresponding biogas residue and biogas slurry.At it In his embodiment, equipment for separating liquid from solid is also connected with homogenization device, and the biogas slurry of acquisition is conveyed to by equipment for separating liquid from solid Matter equipment, homogenization device by biogas slurry, the first fermentation raw material, animal wastes material mixing homogeneous to obtain the second fermentation raw material, So by the use of biogas slurry as the inoculation liquid of zymogenic bacteria nutrient solution, so that the second fermentation raw material fast hydrolyzing.
Wherein, the first fermentation tank 14 includes fermentation tank 140, hydrogenesis and acetogenesis bacteria culture fluid feeding mechanism 141, fermentation tank First through hole and charging hole are provided with the side wall of body 140, first through hole is close to the bottom of fermentation tank 140, fermentation tank 140 First through hole connected by pipeline with the tank body of the second fermentation tank 15, charging hole is close to the top of fermentation tank 140, charging hole It is connected by pipeline with homogenization device 12;The top of fermentation tank 140 sets the second through hole and third through-hole, hydrogenesis and acetogenesis Bacteria culture fluid feeding mechanism 141 is arranged on the top of fermentation tank 140, hydrogenesis and acetogenesis bacteria culture fluid feeding mechanism 141 it is defeated Liquid pipe 142 is stretched into fermentation tank 140 from the second through hole of fermentation tank 140, the woven hose 142 in fermentation tank 140 Tube wall on be provided with fluid hole;Third through-hole is connected by pipeline with marsh gas recovery device 17.
Wherein, the second fermentation tank 15 is included on fermentation tank 150, methane backeria culture tank 151, the side wall of fermentation tank 150 Fourth hole, relief hole, biogas slurry access aperture are provided with, fourth hole, relief hole are close to the bottom of fermentation tank 150, fermentation tank The fourth hole of body 150 is connected by pipeline with the fermentation tank 140 of the first fermentation tank 14, and relief hole passes through pipeline and solid-liquid point Connected from device 17;Biogas slurry access aperture is connected by pipeline with methane backeria culture tank 151, by the biogas slurry in fermentation tank 150 It is delivered in methane backeria culture tank 151;The top of fermentation tank 150 sets fifth hole and the 6th through hole, methane backeria culture tank 151 woven hose is stretched into fermentation tank 150 from the fifth hole of fermentation tank, the woven hose 152 in fermentation tank 150 Tube wall on be provided with fluid hole, the 6th through hole is connected by pipeline with Marsh gas purifying device 16;In methane backeria culture tank 151 Biogas slurry inoculation methane backeria produces methane bacteria culture fluid, and methane bacteria culture fluid is transported into fermentation tank 150 using woven hose 152 In, so that biogas slurry is fully fermented.
Further, marsh gas recovery device 16 includes gas knot screen 160, Marsh gas purifying device 161, gas removal of impurities dress Material of 160 acquisitions containing hydrogen and carbon dioxide gaseous state is put, and the material containing hydrogen and carbon dioxide gaseous state is carried out after removal of impurities It is conveyed to the second fermentation tank 15;Marsh gas purifying device 161 obtains the biogas produced by the second fermentation tank 15, and the biogas obtained enters Row alkali lye is sprayed after removing carbon dioxide and hydrogen sulfide, then low-temperature water removal is to obtain methane.Marsh gas purifying device 161 includes sour gas Body cancellation element 162, cooling dewatering unit 163 and negative pressure provide device 164, and sour gas cancellation element 162 and second ferments The fermentation tank 150 of tank 15 is connected, and cooling dewatering unit 163 is connected with sour gas cancellation element 162, and negative pressure provides device 164 are connected with cooling dewatering unit 163, so as to negative pressure is produced in sour gas cancellation element 162, cooling dewatering unit 163, acid Property gas cancellation element 162 include tank body 1620, sprayer unit 1621, the top of tank body 1620 offers gas access holes and worn Via, gas access holes is connected by pipeline with the fermentation tank 150 of the second fermentation tank 15, the fog-spray nozzle of sprayer unit 1621 1622 enter tank body 1620 from through hole, to be sprayed to the biogas for entering tank body 1620, are sprayed by fog-spray nozzle 1622 Alkaline mist absorbs offers gas discharge outlet on the sour gas in biogas, the side wall of tank body 1620, cooling dewatering unit 163 Gas entrance is connected with the gas discharge outlet on the side wall of tank body 1620, and cooling dewatering unit 163 includes pipeline 1630 and set Put and offer pod apertures in height in pipeline 1630 gradually incremental cooling fin 1631, cooling fin 1631, pipeline 1630 First end is fixedly connected with the side wall of tank body 1620, and the second end of pipeline 1630 is higher than the first end of pipeline 1630, so in natural pond When gas is by pipeline 1630, cooling fin 1631 makes after the vapor cooling liquid in biogas, passes through the pod apertures of cooling fin 1631 Flow back in tank body 1620.
Further, biogas preparation system 10 also includes conveying device 18, and the delivery end of conveying device 18 sequentially passes through the The fourth hole of the first through hole of the fermentation tank 140 of one fermentation tank 14, the fermentation tank 150 of the second fermentation tank 15, conveying dress Fermentation compound in the fermentation tank 140 of first fermentation tank 14 is delivered to by the delivery end for putting 18 by helical feed mode In two fermentation tanks 15.Conveying device 18 includes motor 180, sealed chamber 181, spiral propeller 182 and sealing gas supply dress Put 183;Sealed chamber 181 is fixed on the side wall of the first fermentation tank 14, and the fixing end of spiral propeller 182 is from the first fermentation tank 14 Side wall pass after be fixedly connected into sealed chamber 181 with the output end of motor 180, spiral propeller 182 sequentially passes through The fourth hole of the first through hole of the fermentation tank 140 of one fermentation tank 14, the fermentation tank 150 of the second fermentation tank 15;Blanket gas Body feeding mechanism 183 is connected with sealed chamber 181, prevents the fermentation in the first fermentation tank 14 from mixing with lasting offer sealing gas Material is penetrated into sealed chamber 181.In the present embodiment, referring to Fig. 3, in the fermentation tank 140 of the first fermentation tank 14 Bottom on be located at the both sides of spiral propeller 182 one arc bump 1401 be respectively set, formed between two arc bumps 1401 Accepting groove 1402, can so ensure that the fermentation compound in the fermentation tank 140 of the first fermentation tank 14 can collect in collecting In groove 1402, in order to which the compound that ferments smoothly is pushed to the fermentation tank 150 of the second fermentation tank 15 by spiral propeller 182 It is interior.
In above-mentioned biogas preparation system 10, lignocellulose raw material is crushed using disintegrating apparatus 11 to obtain the first fermentation Raw material, using homogenization device 12 by the first fermentation raw material with animal wastes material mixing homogeneous to obtain the second fermentation raw material, profit Decomposed to obtain hydrolysis compound, the first fermentation after being mixed the second fermentation raw material and zymogenic bacteria with hydrolysis device 13 Hydrogen-producing acetogens are mixed further to decompose and mixed with obtaining the fermentation containing formic acid, acetic acid and methanol by tank 14 with hydrolysis compound Material and the material containing hydrogen and carbon dioxide gaseous state are closed, and the fermentation compound containing formic acid, acetic acid and methanol is delivered to the Two fermentation tanks 15, and gaseous material is conveyed into marsh gas recovery device 16, the second fermentation tank 15 is to containing formic acid, acetic acid and first The fermentation compound of alcohol adds methane bacteria culture fluid, and with methane recovery fills 16 and put and be transported to containing hydrogen and carbon dioxide gaseous state Continuing fermentation after material mixing, to produce biogas;What the first fermentation tank 14 of recovery of marsh gas recovery device 16 was provided contains hydrogen and two The gaseous material of carbonoxide, and removal of impurities processing is carried out to the material containing hydrogen and carbon dioxide gaseous state, and by containing after deoxidation The material of hydrogen and carbon dioxide gaseous state is conveyed to the second fermentation tank 15;Marsh gas recovery device 16 also reclaims the second fermentation tank 15 and produced Raw biogas, and being purified to entering the biogas row produced by the second fermentation tank 15 of recovery to obtain methane, so ensures second The quick generation biogas that fermentation compound in fermentation tank can be stablized.

Claims (8)

1. a kind of biogas preparation system, it is characterised in that:Including disintegrating apparatus, homogenization device, hydrolysis device, the first fermentation Tank, the second fermentation tank, marsh gas recovery device and equipment for separating liquid from solid;Disintegrating apparatus is connected with homogenization device, homogenization device It is connected with hydrolysis device, hydrolysis device is connected with the first fermentation tank, the first fermentation tank is also connected with the second fermentation tank, methane recovery Device is connected with the first fermentation tank, the second fermentation tank, equipment for separating liquid from solid and the first fermentation tank, the second fermentation tank and hydrolysis device Connection;Disintegrating apparatus crushes lignocellulose raw material to obtain the first fermentation raw material;Homogenization device is by the first fermentation raw material With animal wastes material mixing homogeneous to obtain the second fermentation raw material, the second fermentation raw material is delivered to hydrolysis device;Hydrolysis device Decomposed after second fermentation raw material and zymogenic bacteria are mixed to obtain hydrolysis compound, and hydrolysis compound is conveyed to First fermentation tank;First fermentation tank by hydrogen-producing acetogens with hydrolysis compound mix further decomposition with obtain containing formic acid, Acetic acid and the fermentation compound of methanol and the material containing hydrogen and carbon dioxide gaseous state, and formic acid, acetic acid and methanol will be contained Fermentation compound is delivered to the second fermentation tank, and gaseous material is conveyed into marsh gas recovery device;Second fermentation tank to containing The fermentation compound of formic acid, acetic acid and methanol adds methane bacteria culture fluid, and is transported to marsh gas recovery device containing hydrogen and two Continuing fermentation after the gaseous material mixing of carbonoxide, to produce biogas;Marsh gas recovery device reclaims containing for the first fermentation tank offer There is a material of hydrogen and carbon dioxide gaseous state, and carry out removal of impurities processing to the material containing hydrogen and carbon dioxide gaseous state, and by deoxidation The material containing hydrogen and carbon dioxide gaseous state afterwards is conveyed to the second fermentation tank;Marsh gas recovery device also reclaims the second fermentation tank institute The biogas of generation, and the biogas row produced by entering the second fermentation tank of recovery is purified to obtain methane;Equipment for separating liquid from solid will The slurries that first fermentation tank, the second fermentation tank are produced carry out lock out operation, to obtain corresponding biogas residue and biogas slurry.
2. biogas preparation system as claimed in claim 1, it is characterised in that:Equipment for separating liquid from solid also connects with homogenization device Connect, the biogas slurry of acquisition is conveyed to homogenization device by equipment for separating liquid from solid, homogenization device is by biogas slurry, the first fermentation raw material, dynamic Thing excrement material mixing homogeneous is to obtain the second fermentation raw material.
3. biogas preparation system as claimed in claim 1 or 2, it is characterised in that:Marsh gas recovery device is filled including gas removal of impurities Put, Marsh gas purifying device, gas knot screen obtains the material containing hydrogen and carbon dioxide gaseous state, and to containing hydrogen and titanium dioxide The gaseous material of carbon is conveyed to the second fermentation tank after carrying out removal of impurities;Marsh gas purifying device obtains the natural pond produced by the second fermentation tank Gas, and the biogas obtained carried out after alkali lye spraying removing carbon dioxide and hydrogen sulfide, then low-temperature water removal is to obtain methane.
4. biogas preparation system as claimed in claim 3, it is characterised in that:First fermentation tank includes fermentation tank, production hydrogen production First through hole and charging hole are provided with acetic acid bacteria culture fluid feeding mechanism, the side wall of fermentation tank, first through hole is close to fermentation The bottom of tank body, the first through hole of fermentation tank is connected by pipeline with the tank body of the second fermentation tank, and charging hole is close to fermentation tank The top of body, charging hole is connected by pipeline with homogenization device;The top of fermentation tank sets the second through hole and third through-hole, Hydrogenesis and acetogenesis bacteria culture fluid feeding mechanism is arranged on the top of fermentation tank, hydrogenesis and acetogenesis bacteria culture fluid feeding mechanism it is defeated Liquid pipe is provided with out from the second through hole of fermentation tank stretches into fermentation tank on the tube wall of the woven hose in fermentation tank Fluid apertures;Third through-hole is connected by pipeline with marsh gas recovery device.
5. biogas preparation system as claimed in claim 4, it is characterised in that:Second fermentation tank includes fermentation tank, methane backeria Fourth hole, relief hole, biogas slurry access aperture are provided with culture tank, the side wall of fermentation tank, fourth hole, relief hole are close to hair The bottom of fermentation tank body, the fourth hole of fermentation tank is connected by pipeline with the tank body of the first fermentation tank, and relief hole passes through pipeline It is connected with equipment for separating liquid from solid;Biogas slurry access aperture is connected by pipeline with methane backeria culture tank, by the biogas slurry in fermentation tank It is delivered in methane backeria culture tank;The top of fermentation tank sets fifth hole and the 6th through hole, the transfusion of methane backeria culture tank Pipe is provided with out liquid from the fifth hole of fermentation tank stretches into fermentation tank on the tube wall of the woven hose in fermentation tank Hole, the 6th through hole is connected by pipeline with Marsh gas purifying device;Biogas slurry inoculation methane backeria in methane backeria culture tank produces methane Bacteria culture fluid, and methane bacteria culture fluid is transported in fermentation tank using woven hose, so that biogas slurry is fully fermented.
6. biogas preparation system as claimed in claim 5, it is characterised in that:Biogas preparation system also includes conveying device, defeated Send device delivery end sequentially pass through the first fermentation tank fermentation tank first through hole, the of the fermentation tank of the second fermentation tank Four through holes, the delivery end of conveying device is defeated by the fermentation compound in the fermentation tank of the first fermentation tank by helical feed mode Deliver in the second fermentation tank.
7. biogas preparation system as claimed in claim 6, it is characterised in that:Conveying device includes motor, sealed chamber, spiral Propeller and sealing gas feeding mechanism;Sealed chamber is fixed on the side wall of the first fermentation tank, the fixing end of spiral propeller from The side wall of first fermentation tank is fixedly connected after passing into sealed chamber with the output end of motor, and spiral propeller sequentially passes through The fourth hole of the first through hole of the fermentation tank of one fermentation tank, the fermentation tank of the second fermentation tank;Sealing gas feeding mechanism It is connected with sealed chamber, prevents the fermentation compound in the first fermentation tank from penetrating into sealed chamber with lasting offer sealing gas.
8. biogas preparation system as claimed in claim 7, it is characterised in that:Marsh gas purifying device includes sour gas and eliminates dress Put, cooling dewatering unit and negative pressure provide device, sour gas cancellation element is connected with the fermentation tank of the second fermentation tank, is cooled down Dehydration device is connected with sour gas cancellation element, and negative pressure provides device and is connected with cooling dewatering unit, so that sour gas disappears Except negative pressure is produced in device, cooling dewatering unit, sour gas cancellation element includes opening at the top of tank body, sprayer unit, tank body Provided with gas access holes and through hole, gas access holes is connected by pipeline with the fermentation tank of the second fermentation tank, sprayer unit Fog-spray nozzle enter tank body from through hole, with to enter tank body biogas spray, pass through spray spray alkaline mist absorption Gas discharge outlet, the gas entrance and tank body of cooling dewatering unit are offered on sour gas in biogas, the side wall of tank body Side wall on gas discharge outlet connection, it is gradually incremental cold that cooling dewatering unit includes pipeline and the height that is arranged in pipeline But piece, cooling fin offers pod apertures, and the first end of pipeline is fixedly connected with the side wall of tank body, and the second end of pipeline is higher than pipeline First end, so when biogas is by pipeline, cooling fin makes after the vapor cooling liquid in biogas, passes through leading for cooling fin Discharge orifice is flowed back in tank body.
CN201621455674.1U 2016-12-28 2016-12-28 Biogas preparation system Active CN206418123U (en)

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CN106479877A (en) * 2016-12-28 2017-03-08 宁夏天纵泓光余热发电技术股份有限公司 Biogas preparation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106479877A (en) * 2016-12-28 2017-03-08 宁夏天纵泓光余热发电技术股份有限公司 Biogas preparation system

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