CN202322828U - Energy-saving anaerobic fermentation device - Google Patents

Energy-saving anaerobic fermentation device Download PDF

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Publication number
CN202322828U
CN202322828U CN2011204575620U CN201120457562U CN202322828U CN 202322828 U CN202322828 U CN 202322828U CN 2011204575620 U CN2011204575620 U CN 2011204575620U CN 201120457562 U CN201120457562 U CN 201120457562U CN 202322828 U CN202322828 U CN 202322828U
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China
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tank body
biogas
valve
gas
fermentor tank
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CN2011204575620U
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云斯宁
孙毅
甘艳萍
邵升
张学峰
邱建泉
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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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
    • 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
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/02—Form or structure of the vessel
    • 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
    • C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02—Stirrer or mobile mixing elements
    • 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
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/20—Degassing; Venting; Bubble traps
    • 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
    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • 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
    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/40—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pressure
    • 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

Abstract

The utility model discloses an energy-saving anaerobic fermentation device. The device comprises a fermentation tank body and a driving device which is arranged on the fermentation tank body, wherein the fermentation tank body is egg-shaped; an internal cylinder type spiral stirrer is arranged at the central position of an inner cavity of the fermentation tank body; a stirrer internal cylinder is arranged on the outer side of the internal cylinder type spiral stirrer; a heating device is arranged between the tank wall of the fermentation tank body and the stirrer internal cylinder; an umbrella-type distributor is arranged at the internal bottom of a tank; an exhaust pipe and a pressure control device are arranged on the upper part of the fermentation tank body, and an umbrella-type air flow distributor air inlet pipe and a mud and sand discharging outlet are arranged at the bottom of the fermentation tank body; and the side wall of the fermentation tank body is communicated with a methane circulating system, a biogas slurry circulating system, a gas-liquid circulating system, a heating system, a temperature control system and a biogas residue and slurry storage tank respectively. By the device, the stirring efficiency of the systems can be improved, an anaerobic fermentation environment can be improved and fluids can be uniformly mixed by repeated circulation stirring; and the device has a small temperature difference fluctuation range, is low in system energy consumption and high in fermentation rates and is suitable for popularization and application.

Description

A kind of energy-conservation anaerobic ferment devices
Technical field
The utility model belongs to fermentation technical field, is specifically related to a kind of energy-efficient anaerobic ferment devices, particularly the device of feces of livestock and poultry agricultural crop straw mass-producing biogas engineering anaerobically fermenting processing.
Background technology
In recent years, along with the fast development of scale animal and poultry cultivation industry, a large amount of feces of livestock and poultry, sewage the like waste of concentrating relatively produce in succession.Since not in place with the large-scale cultivation technology of matching, make large-scale livestock and poultry cultivation enterprise ambient air environmental quality constantly worsen.In addition, the sewage that plant discharges contains large amount of organic, and is serious to the environmental pollution of periphery.From the demand of national energy strategy, environment protection and social development, mass-producing feces of livestock and poultry biogas engineering is an optimal path of realizing the comprehensive utilization of feces of livestock and poultry changing rejected material to useful resource.The fast-developing breed by product (ight soil etc.) that brings of scale animal and poultry cultivation industry concentrated relatively is for the mass-producing biogas engineering of feces of livestock and poultry has been created advantageous conditions.In addition, rural area household biogas small scale, efficient is low, and sanitary condition is poor, and energy utilization rate is also low.From the angle of new countryside construction, change the pattern that biogas disperses generation and utilizes as early as possible, realize the biogas engineering that large-scale cultivation and mass-producing biogas match, be current rural area problem demanding prompt solution.
The small-scale biogas engineering construction of China is established in the sixties in last century, and adding stalk with ight soil is that raw material adopts intermittent operation.Mass-producing livestock and poultry feces anaerobism haircut ferment engineering was built the end of the seventies, and (scale is 50-100m to adopt normal temperature underground type producer 3) fermentation.And the construction of extensive methane-generating pit for farm household starts from the eighties, adopts the fermentor tank of multiple-hearth reaction on the ground, normal temperature fermentation, and factor of created gase is about 1.0m 3/ (m 3D).Since the nineties, extensive biogas engineering becomes the important measures that realize the swine manure wastewater comprehensive utilization of resources.But present biogas engineering is because large-scale degree low (disperseing to utilize); Fermentation technique falls behind, and gas producing efficiency is low; The reactor technology level is low, and energy consumption is high; Technological process control falls behind, and efficient is low; Methane gas producing discontinuous (winter is idle), service efficiency is low; Biogas uses blindly, and is unreasonable; Natural pond slag, natural pond liquid are failed effective and reasonable utilization, and is seriously polluted; Factor such as low in economic efficiency causes the mass-producing methane engineering technology to fail further promotion and application effectively.
In the existing mass-producing anaerobically fermenting biogas engineering, it is the vertical or horizontal type structure of cylindricality that the anaerobism producer adopts tank body usually, and built-in multistage whisking appliance (CN201598284U, CN201614372U, CN201704320U).Fermentor tank mainly relies on strong mechanical stirring to carry out mass transfer, heat transfer and bubble and breaks up, and this just needs whisking appliance to have bigger power of agitator.Square being directly proportional of power of agitator and stirrer diameter, the fermentor tank volume enlarges the back power of agitator and is multiplied.Thereby the energy consumption of mass-producing marsh-gas fermentation tank is than higher.In addition, because the coupling of tank structure (vertical, horizontal, cylindrical, prismatic etc.) and stirring type (radial type, axial flow type and mixed type) is unreasonable, cause fermentor tank bottom long-term existence " dead angle ", generation is stirred uneven, and then influences the efficient of anaerobically fermenting.Although adopt at present to change fermentor tank tank body aspect ratio and improve the anaerobically fermenting environment with structure, change agitating vane type and mode,, still can't effectively solve " dead angle " problem of tank base.And the increasing power of agitator has strengthened the cost and the working cost of stirring system simultaneously.This is not to solve the measure of existing issue otherwise effective technique for present economic benefit and inapparent biogas engineering.
Venting pressure is directly proportional with the interior height of liquid layer of fermentor tank.Therefore, the fermentor tank volume enlarges back venting pressure fast rise, finally causes system energy consumption to increase.For the microbial liquid submerged fermentation, adopt air lift type or gas circulation type fermentor tank (CN201288178Y, CN2597477 usually; CN101058789A CN03219507.9), utilizes the compressed air pressure ability; Pass through fluidic device; Relend and help a jar interior guiding device, drive the fermented liquid circulation, fermentation process is evenly carried out in jar.For no stirred fermentor, though saved the consumption of power of agitator, for overcoming the pressure ability of liquid layer static pressure and conversion high-speed jet, the air compressor machine top hole pressure rises and causes power consumption to rise, can not effective energy-saving.Patent " a kind of axial center aeration and jet-booster type stirring fermenter (CN101007997A) " and " a kind of fermentor tank (CN201459110U) with air-distributor " be perforate importing pressurized air on the agitating vane of axle reasonably; Reach the maximum degree of smashing of air with it; And quick and liquid mixing, help improving stirring efficiency; Patent " a kind of mechanical agitating fermentation tank (CN201317768Y) " and " a kind of oxygen liquid rotary formula fermentor tank (CN201605262U) that helps by force " utilize the pressurized air pore of offering on the vertical inlet pipe in the fermentor tank in fermented liquid, to add gas; Utilize the turning effort of whipping appts; Make air and fermented liquid thorough mixing; Accelerate exhaust gas emission speed, improved fermentation efficiency; Fermentor tank (CN201276561Y, CN201321454Y, CN201737933U that other utilize air-flow to stir; CN101696388A, CN201459110U, CN201485447U; CN201598284U) mostly dissimilar air-distributors or jet mixer are placed the fermentor tank inner bottom part, pressurized air is squeezed into by tank base, by means of the intravital mechanical stirring of jar; Make the interior air distribution of fermentor tank be tending towards evenly having improved the air utilization ratio of fermentor tank.These aerobic fermentations utilize pressurized air to get into fermentor tank and make gas, liquid thorough mixing, play certain stirring action simultaneously, have partly or entirely saved the energy that mechanical stirring consumes, and have improved the fermentation efficiency of fermentor tank.
For biogas anaerobic fermentation, utilize air-flow to stir and partly or entirely replace churned mechanically situation actually rare in disclosed documents and materials.Patent " circulating current biogas fermentation tank arrangement (CN2849429Y) " adopts the circulating current passage, and blower fan is extracted the biogas that produces out from the tank body top, squeeze into from tank base again, helps to increase the contact area of bacterial classification and fermentation raw material; Patent " two recycle gas stir anaerobic fermentation tank (CN2550372Y) " adopts gas circulation and the two loop structures of liquid circulation, and outer circulation sucks gas, utilizes the energy that adds in gas and density of liquid difference and the working cycle outside, forms circulating inside.But because no whipping appts, for the mass-producing biogas engineering, the simple biogas that leans on is limited to the effect of the stirring of feed liquid in the fermentor tank, and simple gas stirring can not satisfy the significant mass transfer of mechanical stirring, heat transfer effect, can not effective energy-saving.
In addition, another technical bottleneck of restriction biogas technology development is that aerogenesis instability or factor of created gase are low.It is interval at effective leavening temperature that anaerobically fermenting is only kept Digestive system, and concentration maximum, the activity that just can keep methanobacteria are the highest, and the organic acid in the feces of livestock and poultry could finally be converted into biogas under the effect at methanobacteria through the organic acid that acidication forms.Therefore, keeping the interior constant temp of fermentor tank is the key that produces biogas.The optimum temperature range of anaeration in normal temperature fermentation is 33-35 ℃, and the optimum temperature range of high-temperature anaerobic fermentation is 50-55 ℃, and temperature difference fluctuation can not be above 2 ℃ in jar.In order to guarantee that methanobacteria has best activity, adopt heating unit and attemperator to keep the required leavening temperature of Digestive system usually, guarantee anaerobically fermenting steady running.Fermentation raw material is heated in pretreatment pool, and thermal losses is bigger, and inconvenience is adopted.And adopt heating unit that the direct heating of tank interior fermentation raw material is often caused heating element (heating rod) fouling, and influence heat exchange efficiency, heat inhomogeneous.Patent " fermentative Production biogas is with retort (CN2690392Y) " is employed in the way of injecting circulating hot water in the tank wall intercalated water sleeve and comes the intravital feed liquid of heating tank; Patent " a kind of fermentor tank (CN2586698Y) " adopts tank body external fixation helical heating pipe to heat fermentor tank indirect heating fermented liquid; It is external that patent " anaerobically fermenting temperature raising and maintaining device (CN101067114A) " employing spiral pipe is wrapped in fermentor tank, and water inlet pipe, rising pipe spiral alternately rise.Although the external heating unit of these tank bodies has solved the problem that the element heating is prone to fouling that heats; Also solved the homogeneity of the interior temperature of fermentor tank tank body on a small scale to a certain extent; But; For extensive biogas engineering, the indirect heating system of external heating tube water cycle can not effectively be kept the temperature homogeneity of jar interior fermentation raw material, is difficult to guarantee the operation of anaerobically fermenting normal and stable.
Than external indirect heating mode, built-in direct heating calorific loss is little, and energy consumption is low, can guarantee that the temperature of fermentation raw material in the mass-producing biogas engineering fermentor tank is more even.Patent " circulating current biogas fermentation tank arrangement (CN2849429Y) " is utilized generating waste-heat; Let hot water heat the feed liquid in the fermentor tank through the built-in helical pipe of tank body central authorities; But the finiteness of UTILIZATION OF VESIDUAL HEAT IN can not guarantee fermenter system and be in best leavening temperature that the spy is the winter at severe cold area.Patent " four seasons constant temperature biogas fermentor tanks (CN201362709Y) " adopts built-in temperature adjustment pipe network and external ground source capsule net to keep leavening temperature best in the fermentor tank; But for geotemperature low excessively area and northern frore area; For the mass-producing biogas engineering; External ground source capsule web frame can not be brought into play its effective function, and built-in temperature adjustment pipe network " M type " structure can not effectively guarantee the stability and the tank interior different sites temperature difference minimum of temperature.Although some small-sized fermentation equipment adopt different heating installations can guarantee the temperature homogeneity of fermentation raw material in the fermentor tank, guarantee the operation of anaerobically fermenting normal and stable.But for mass-producing anaerobism biogas engineering, existing whipping appts (machinery or air-flow), heating unit, temperature control unit can not guarantee fermentation system effectively steady running at all seasons.
The utility model content
The purpose of the utility model is to overcome above-mentioned shortcoming and defect, and a kind of energy-conservation anaerobic ferment devices is provided.The fermentor tank of this anaerobic ferment devices has through interior cartridge type spiral stirrer, the biogas recycle system, and the synergy of the natural pond fluid circulation and the gas-liquid recycle system is improved the environment of anaerobically fermenting; Improve stirring efficiency; Reduce system energy consumption, save production cost, a jar inner fluid is mixed; Solve stirring " dead angle " or " blind area " of tank base, realized efficient mass transfer, the heat transfer of fermentation raw material in the fermentor tank.Heating system and temperature controlling system can effectively be controlled the temperature of fermentation raw material in the tank body, in keeping jar the temperature difference fluctuation of fermentation raw material minimum, make the leavening temperature of the best that anaerobically fermenting is in.
In order to achieve the above object, the utility model is realized through following technical proposals.
A kind of energy-conservation anaerobic ferment devices; Comprise the fermentor tank tank body and be arranged at the drive unit on the fermentor tank tank body; Said fermentor tank tank body is an egg type, and fermentor tank tank inner chamber center is provided with interior cartridge type spiral stirrer, and the interior cartridge type spiral stirrer outside is provided with the whisking appliance inner core; Between fermentor tank tank body tank skin and whisking appliance inner core, be provided with temperature-adjusting heating device, a jar inner bottom part is provided with the umbrella shape air distributor; Said fermentor tank tank body top is provided with vapor pipe and pressure control device, and the bottom is provided with umbrella shape air distributor inlet pipe and the husky outlet of spoil disposal row; Be communicated with the biogas recycle system, natural pond fluid circulation, the gas-liquid recycle system, heating system, temperature controlling system and biogas residue and biogas liquid on the said fermentor tank tank wall respectively and deposit the pond.
The utility model is further characterized in that:
The said biogas recycle system comprises that the first pretreatment system PRO-S1, biogas pre-treatment valve, the 4th pretreatment system PRO-S4 and the biogas self-circulation that are communicated with vapor pipe on the fermentor tank tank body through pipeline stir the pipe network valve; The biogas self-circulation is stirred the pipe network valve and is connected with umbrella shape air distributor inlet pipe, and umbrella shape air distributor inlet pipe is communicated with said umbrella shape air distributor;
The said first pretreatment system PRO-S1 comprises negative pressure protector, liquid packing, water trap, devulcanizer and snubber assembly; Said the 4th pretreatment system PRO-S4 comprises air compressor machine, pressurized vessel gas storage holder and pressure regulating box, connects through gas pipeline between each device; Said the 4th pretreatment system PRO-S4 stirs the pipe network valve through biogas gas line network valve, biogas self-circulation and biogas automatic control flow valve door is communicated with user, the set steam boiler of umbrella shape air distributor inlet pipe and system respectively.
The said gas-liquid recycle system comprises the gas-liquid circulation device that is connected with the biogas recycle system through gas-liquid recycle system valve, and the gas-liquid circulation device is communicated with the fermentor tank tank body through the first fluid circulation system valve, the second fluid circulation system valve and the 3rd fluid circulation system valve that pipeline connects.
Said natural pond fluid circulation comprises the second pretreatment system PRO-S2, valve well, natural pond liquid reflux cycle pump and the natural pond liquid reflux cycle pump valve door that is communicated with fermentor tank tank body (fermentor tank tank body tube wall comprises inner tank wall and heating medium, double-layer heat insulation cover and tank wall resist) through pipeline;
The said second pretreatment system PRO-S2 comprises former parison manure pit, acidulated pool, heating metering pond, pump and valve well, connects through fluid pipeline between each device.
Said heating system comprises the temperature-adjusting heating device that is communicated with steam boiler and municipal heat supply respectively; Said temperature-adjusting heating device is communicated with steam boiler and municipal heat supply through heating system water intaking valve, heating system outlet valve and the water circulation system water intaking valve that pipeline connects; Said steam boiler suction culvert is communicated with water pump, the 3rd pretreatment system PRO-S3 and steam boiler water intaking valve; Said steam boiler admission passage is communicated with biogas automatic control flow valve door and automatic control device AUTO; Said temperature-adjusting heating device also is communicated with the said second pretreatment system PRO-S2 through raw materials pretreatment system water intaking valve.
Said temperature controlling system comprises heat riser TEMP-C and the temperature detection thermopair that is arranged at respectively on the fermentor tank tank body, and heat riser TEMP-C and temperature are surveyed thermopair and be connected to thermostatical automatic control device AUTO.
Cartridge type spiral stirrer top is provided with the tubular shaft that runs through its center in said, reaches the baffle plate and the defoaming device that are driven by tubular shaft, and tubular shaft is provided with the whisking appliance screw-blade; The bottom of tubular shaft is connected with umbrella shape air distributor inlet pipe.
Said temperature-adjusting heating device forms " X " type structure by " order " font heating tube and " day " font heating tube combined crosswise; Steam (hot water) gets into from heating tube one side; Heat exchange is condensed into the back and flows out from opposite side; Water inlet pipe and rising pipe vertically are staggered successively, and a plurality of " X " type heating arrangement constitutes the multi-layer annular structure along the cavity between fermentor tank tank body and the whisking appliance inner core; Place near the egg type fermentor tank inwall, arranging successively along circumference, (press even number 2,4,6...), form " annulus ", (press odd number 1,3,5...), interior cartridge type whisking appliance places among the multilayer annulus longitudinal layered the arranging of a plurality of heating " annulus ";
Said adjacent " X " type heating arrangement is 0.30-0.50m at interval, heating " annulus " layer and the separated 0.50-0.70m of interlayer, and the height of " X " type heating arrangement is the 1/8-1/6 of tank body internal diameter.
Said umbrella shape air distributor is the cone shaped opening structure; Be along the cone circumference and be symmetrically distributed with 2,4,8 or 16 Venturi gas liquid mixer; Each Venturi gas liquid mixer is established three ports; Its gas liquid mixer opening for feed places on the umbrella shape air distributor circular cone outer side, and the fluidized bed mixer gas liquid outlet places the umbrella shape air distributor inboard, and gas liquid mixer air inlet port is communicated with and is supported in the pipeline section middle part of gas liquid mixer opening for feed and fluidized bed mixer gas liquid outlet formation with inlet pipe; Gas liquid mixer supports through umbrella shape air distributor medial surface and umbrella shape air distributor inlet pipe and is counterclockwise tilt distribution along the cone circumference, and vergence direction is consistent with the sense of rotation of said tubular shaft; Said angle of inclination is 3-10 °.
Said biogas residue and biogas liquid is deposited and is provided with the fermentor tank discharging water seal that is communicated with the fermentor tank tank body in the pond, and biogas residue and biogas liquid is deposited the pond and is communicated with the biogas residue and biogas liquid separator.
Said fermentor tank tank body volume is 500-3000m 3Monomer jar or disjunctor jar, tank body aspect ratio are 0.60-0.75, and tank body height and spiral stirrer sleeve aspect ratio are 0.50-0.80, and the tank body internal diameter is 0.30-0.50 with whisking appliance barrel bore ratio.
Relatively having the following advantages of the utility model and prior art:
1, the utility model is simple in structure, reasonable in design, and egg type fermentor tank and interior cartridge type spiral stirrer adapt, and with the power of agitator acquisition maximum mixed effect of minimum, is the key device of mass-producing feces of livestock and poultry anaerobic fermented crop grass.
2, the utility model adopts the umbrella shape air distributor of built-in symmetrical distribution venturi tube, and compressed biogas is squeezed into from the fermentor tank bottom, and high velocity air drives material rotation in the fermentor tank, rolls; The castering action of cartridge type high-efficiency helical whisking appliance in cooperating promotes material and moves repeatedly at the mixing vessel internal recycle, produces stronger radially, axially mixing; Improve stirring efficiency, reduced system energy consumption, saved working cost; Shorten fermentation period, improved productivity.
3, the utility model adopts multilayer " annulus " heating unit of " X " type heating component composition to heat fermented feed liquid in the egg type fermentor tank, and interior cartridge type whisking appliance places among the multilayer annulus heating component, has guaranteed that jar interior fermented feed liquid temperature difference fluctuation is minimum; Full-automatic temperature control system makes the leavening temperature of the best that anaerobically fermenting is in, and has guaranteed that the methane bacterial classification has best activity, has improved the fermentation efficiency and the factor of created gase of fermentor tank.
4, the utility model stirs (biogas circulation through many circulations; Circulation of natural pond liquid and gas-liquid circulation) collaborative in the mechanical agitation of cartridge type spiral stirrer a jar inner fluid is mixed; Effectively improved the environment of anaerobically fermenting; Solve stirring " dead angle " or " blind area " of tank base, realized efficient mass transfer, the heat transfer of fermentation raw material in the fermentor tank.
In a word, the utility model novel structure, reasonable in design; Can be through interior cartridge type spiral stirrer, the biogas recycle system, the synergy of the natural pond fluid circulation and the gas-liquid recycle system improves the stirring efficiency of system; Improve the yeasting of anaerobically fermenting, fluid is mixed, temperature difference fluctuation is little; System energy consumption is low, and fermentation efficiency is high, and factor of created gase is high; Realize efficient mass transfer, the heat transfer of fermentation raw material in the fermentor tank, guaranteed anaerobically fermenting normally operation at all seasons, realize further applying of mass-producing biogas engineering.
Description of drawings
Fig. 1 is the overall structure synoptic diagram of the utility model.
Fig. 2 is the local enlarged diagram of fermentor tank tank structure.
Fig. 3 is the monomeric perspective view of heating unit.
Fig. 4 be heating unit in fermentor tank along the circle distribution synoptic diagram.
Fig. 5 is heating unit monomer vertical distribution schematic diagram in jar.
Fig. 6 is a umbrella shape air distributor structural representation.
Fig. 7 is the A-A cross-sectional schematic of Fig. 6.
As shown in the figure: 1-drive unit (phonomoter); Cartridge type spiral stirrer in the 2-; The 3-vapor pipe; 301-gas-liquid recycle system valve; 302-air-flow (biogas) pre-treatment valve; 3021-biogas gas line network valve; Supply lines valve is stirred in the self-circulation of 3022-biogas; 3023-biogas automatic control flow valve door; The 4-pressure control device; 5-baffle plate and defoaming device; 6-whisking appliance inner core; 7-whisking appliance bracing frame; 8-fermentor tank tank body; 801-inner tank wall and heating medium; 802-double-layer heat insulation cover; 803-tank wall resist; 9-gas-liquid circulation device (recycle pump); 901,902,903-fluid circulation system valve; 10-umbrella shape air distributor inlet pipe; The 11-steam boiler; 1101-heating system water intaking valve; 1102-heating system outlet valve; 1103-raw materials pretreatment system water intaking valve; 1104-water circulation system water intaking valve; The 12-valve well; The 13-water pump; 1301-steam boiler water intaking valve; 14-natural pond liquid reflux cycle pump; 1401-natural pond liquid reflux cycle pump valve door; 15-biogas residue and biogas liquid separator; The 16-biogas residue and biogas liquid is deposited pond and fermentor tank discharging water seal; The 17-temperature is surveyed thermopair; The 18-temperature-adjusting heating device; 19-umbrella shape air distributor; 20-whisking appliance screw-blade; The 21-tubular shaft; 22-Venturi gas liquid mixer; 2201-gas liquid mixer air inlet port; 2202-gas liquid mixer opening for feed; 2203-gas liquid mixer gas liquid outlet; The husky outlet of 23-spoil disposal row.
Embodiment
Through accompanying drawing and specific embodiment utility model is further specified below.
As shown in Figure 1; This energy-conservation anaerobic ferment devices comprises fermentor tank tank body 8 and is arranged at the drive unit 1 on the fermentor tank tank body 8 that wherein: fermentor tank tank body 8 is an egg type; Fermentor tank tank body 8 lumen centers are provided with interior cartridge type spiral stirrer 2; Interior cartridge type spiral stirrer 2 outsides are provided with whisking appliance inner core 6, between fermentor tank tank body 8 tank skins and whisking appliance inner core 6, are provided with temperature-adjusting heating device 18, and a jar inner bottom part is provided with umbrella shape air distributor 19; Fermentor tank tank body 8 tops are provided with vapor pipe 3 and pressure control device 4, and the bottom is provided with umbrella shape air distributor inlet pipe 10 and the husky outlet 23 of spoil disposal row; Be communicated with the biogas recycle system, natural pond fluid circulation, the gas-liquid recycle system, heating system and temperature controlling system on fermentor tank tank body 8 sidewalls respectively.
The biogas recycle system (seeing the right side of fermentor tank tank body shown in Figure 1) comprises that the first pretreatment system PRO-S1, biogas pre-treatment valve 302, the 4th pretreatment system PRO-S4 and the biogas self-circulation that are communicated with vapor pipe 3 on the fermentor tank tank body 8 through pipeline stir pipe network valve 3022; The biogas self-circulation is stirred pipe network valve 3022 and is connected with umbrella shape air distributor inlet pipe 10, and umbrella shape air distributor inlet pipe 10 is communicated with umbrella shape air distributor 19; The first pretreatment system PRO-S1 comprises negative pressure protector, liquid packing, water trap, devulcanizer and snubber assembly; The 4th pretreatment system PRO-S4 comprises air compressor machine, pressurized vessel gas storage holder and pressure regulating box, connects through gas pipeline between each device; Said the 4th pretreatment system PRO-S4 stirs pipe network valve 3022 through biogas gas line network valve 3021, biogas self-circulation and biogas automatic control flow valve door 3023 is communicated with user, the set steam boiler 11 of umbrella shape air distributor inlet pipe 10 and system respectively.
Link to each other with the above-mentioned biogas recycle system and to be connected with the gas-liquid recycle system; The gas-liquid recycle system comprises the gas-liquid circulation device 9 (this device of present embodiment is taked recycle pump) that is connected with the biogas recycle system through gas-liquid recycle system valve 301, and gas-liquid circulation device 9 is communicated with fermentor tank tank body 8 through the first fluid circulation system valve 901, the second fluid circulation system valve 902 and the 3rd fluid circulation system valve 903 that pipeline connects.
During work, start gas-liquid circulation device 9 (recycle pump), in jar, extract fermented liquid in the fermentor tank out, together with the biogas of the 4th pretreatment system PRO-S4 from the extraction of tank body top; Through valve 301,901,902; 903 controls, by actual needs from the fermentor tank side different sites squeeze in the jar, thereby the feed liquid in the fermentor tank is seethed; Strengthened the touch opportunity of bacterial classification and fermented liquid, also accelerated metabolic process, fermentation time is shortened dramatically.
Natural pond fluid circulation (seeing the left side of fermentor tank tank body 8 shown in Figure 1) comprises the second pretreatment system PRO-S2, valve well 12, natural pond liquid reflux cycle pump 14 and the natural pond liquid reflux cycle pump valve door 1401 that is communicated with fermentor tank tank body 8 through pipeline; The second pretreatment system PRO-S2 comprises former parison manure pit, acidulated pool, heating metering pond, pump and valve well 12, connects through fluid pipeline between each device.Natural pond liquid refluxes effectively to reduce in the fermentor tank and expects concentration admittedly, has improved the mixed effect of solid-liquid gas in the fermentor tank.
The tank structure of present embodiment is as shown in Figure 2, and fermentor tank tank body 8 is metal system tank body or glass steel tank, the fermentor tank tank body 8 outer heating mediums 801 that are followed successively by, double-layer heat insulation cover 802 and outer wall resist 803.Heating medium 801 is mainly water heating heating installation, steam heater, storage heater and electric heater, the first-selected electric heater of present embodiment; Double-layer heat insulation overlaps 802 used lagging materials and is mainly vacuum, one or both in urethane, wheat straw stalk, plastic sponge, vinylchlorid, rock wool, litaflex, glass wool, plastic sponge, the pure aluminium silicate.
Heating system corresponding to present embodiment comprises the temperature-adjusting heating device 18 that is communicated with steam boiler 11 and municipal heat supply respectively, and temperature-adjusting heating device 18 is communicated with steam boiler 11 and municipal heat supply through heating system water intaking valve 1101, heating system outlet valve 1102 and the water circulation system water intaking valve 1104 that pipeline connects; Steam boiler 11 suction culverts are communicated with water pump 13, the 3rd pretreatment system PRO-S3 and steam boiler water intaking valve 1301; Said steam boiler 11 admission passages are communicated with biogas automatic control flow valve door 3023 and automatic control device AUTO; Said temperature-adjusting heating device 18 also is communicated with the said second pretreatment system PRO-S2 through raw materials pretreatment system water intaking valve 1103.
Temperature controlling system comprises heat riser TEMP-C and the temperature detection thermopair 17 that is arranged at respectively on the fermentor tank tank body 8, and heat riser TEMP-C and temperature are surveyed thermopair 17 and be connected to thermostatical automatic control device AUTO.
Its principle is; Temperature is surveyed thermopair 17 and is given thermostatical automatic control device AUTO Temperature Feedback in the fermentor tank tank body 8; If a jar interior temperature is lower than fermentation and requires temperature; Thermostatical automatic control device AUTO starts heat riser TEMP-C (heating unit in the heating inner tank wall) and temperature-adjusting heating device 18 heats up to system; Biogas automatic control flow valve door 3023 control biogas flows, biogas are lighted steam boiler 11 and are supplied steam and then heat up for a jar interior feed liquid through heating unit to temperature-adjusting heating device 18.The biogas that anaerobically fermenting produces follows at biogas gas line network valve 3021, biogas through the 4th pretreatment system PRO-S4 and supplies with user, umbrella shape air-flow 19 (being used for feed liquid in the stirred pot) of distribution and steam boiler 11 uses under supply lines valve 3022 and 3023 controls of biogas automatic control flow valve door respectively.
In the present embodiment; Different sites is equipped with temperature detection instrument and thermopair 17 in fermentor tank; Can feed back the temperature of fermenting mixture in the digestive organ at any time, and, in time adjust the temperature in the control digestive organ through heating tube group or heat riser TEMP-C by automatic control system AUTO according to processing requirement; The supply and the adjusting of heat in the digestive organ be can guarantee, fermented quality and efficient effectively improved.
In addition; The temperature-adjusting heating device 18 of present embodiment forms " X " type structure by " order " font heating tube and " day " font heating tube combined crosswise; Water inlet pipe and rising pipe vertically are staggered successively, and a plurality of " X " type heating arrangement constitutes the multi-layer annular structure along the cavity between fermentor tank tank body 8 and the whisking appliance inner core 6; As shown in Figure 3, steam (hot water) gets into from heating tube one side aa and a, and heat exchange is condensed into the back and flows out from opposite side b and bb, and water inlet pipe and rising pipe vertically are staggered successively; " X " type of formation structure, a plurality of " X " type heating arrangement places near the egg type fermentor tank inwall, arranges successively along circumference and (presses even number 2,4; 6...), form " annulus ", as shown in Figure 4, longitudinal layered the arranging of a plurality of heating " annulus " (pressed odd number 1; 3,5...), as shown in Figure 5; Keep interior cartridge type whisking appliance to place among the multilayer annulus, adjacent " X " type heating arrangement is 0.30-0.50m at interval, heating " annulus " layer and the separated 0.50-0.70m of interlayer.The height of " X " is the 1/8-1/6 of tank body internal diameter." X " type structure multilayer " annulus " adds thermal design and has guaranteed a jar interior fermented feed liquid homogeneous heating; Temperature difference fluctuation is minimum; Make the leavening temperature of the best that anaerobically fermenting is in, guaranteed that the methane bacterial classification has best activity, improved the fermentation efficiency and the factor of created gase of fermentor tank.
Further, like Fig. 1 and shown in Figure 6, interior cartridge type spiral stirrer 2 tops of present embodiment are provided with the tubular shaft 21 that runs through its center, reach the baffle plate and the defoaming device 5 that are driven by tubular shaft 21, and tubular shaft 21 is provided with whisking appliance screw-blade 20; Around the tubular shaft 21 is a sleeve (whisking appliance inner core 6), and whisking appliance inner core 6 is fixed on fermentor tank tank body 8 inwalls through whisking appliance bracing frame 7, and the bottom of tubular shaft 21 is connected with umbrella shape air distributor inlet pipe 10.
The umbrella shape air distributor 19 of present embodiment is the cone shaped opening structure; Be along the cone circumference and be symmetrically distributed with 2,4,8 or 16 Venturi gas liquid mixer 22; Each Venturi gas liquid mixer 22 is established three ports 2201; 2202 and 2203; Its gas liquid mixer opening for feed 2202 places on the umbrella shape air distributor 19 circular cone outer sides, and fluidized bed mixer gas liquid outlet 2203 places umbrella shape air distributor 19 inboards, and gas liquid mixer air inlet port 2201 is communicated with and is supported in the pipeline section middle part of gas liquid mixer opening for feed 2202 and fluidized bed mixer gas liquid outlet 2203 formations with inlet pipe 10; Gas liquid mixer 22 supports through umbrella shape air distributor 19 medial surfaces and umbrella shape air distributor inlet pipe 10 and is counterclockwise tilt distribution along the cone circumference, and vergence direction is consistent with the sense of rotation of said tubular shaft 21; Said angle of inclination is 3-10 °.
In addition, in the present embodiment, fermentor tank tank body 8 also is communicated with biogas residue and biogas liquid and deposits the pond, and biogas residue and biogas liquid is deposited and is provided with the fermentor tank discharging water seal 16 that is communicated with the fermentor tank tank body in the pond, and biogas residue and biogas liquid is deposited the pond and is communicated with biogas residue and biogas liquid separator 15.
Further, fermentor tank tank body 8 volumes are 500-3000m 3Monomer jar or disjunctor jar, tank body aspect ratio are 0.60-0.75, and tank body height and spiral stirrer sleeve aspect ratio are 0.50-0.80, and the tank body internal diameter is 0.30-0.50 with whisking appliance barrel bore ratio.
During work; Compressed biogas is squeezed into from the umbrella shape air distributor inlet pipe 10 of fermentor tank tank body 8 bottoms through air compressor machine; Fermented liquid is under Venturi gas liquid mixer 22 jet-stream wind pressure; High velocity air drives fermentor tank tank body 8 interior materials at umbrella shape air distributor 19 internal rotation, makes material produce stronger radially mixing; Simultaneously; Under the radial lift effect of interior cartridge type spiral stirrer 2, fermented liquid gets into whisking appliance inner core 6, under the further lifting of interior cartridge type spiral stirrer 2; Be promoted to top from whisking appliance inner core 6 bottoms; Around quilt under the turning effort of getting rid of flitch (baffle plate and defoaming device 5) is left fermentor tank tank body 8 containers, under the self gravitation effect, slowly fall, get back to fermentor tank tank body 8 bottoms along fermentor tank tank body 8 inwalls; Sucked umbrella shape air distributor 19 by air-flow Venturi gas liquid mixer 22 once more; The stronger axial action of cartridge type spiral stirrer 2 in cooperating promotes material and moves repeatedly at fermentor tank tank body 8 mixing vessel internal recycle, and forming goes round and begins again does not stop the mobile fermenting process.
The above; Only be the embodiment that the utility model is directed against the feces of livestock and poultry anaerobically fermenting; Be not that the utility model is done any restriction; Everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of the utility model technical scheme according to the utility model technology.

Claims (10)

1. energy-conservation anaerobic ferment devices; Comprise fermentor tank tank body (8) and be arranged at the drive unit (1) on the fermentor tank tank body (8); It is characterized in that: said fermentor tank tank body (8) is an egg type, and fermentor tank tank body (8) lumen centers is provided with interior cartridge type spiral stirrer (2), and interior cartridge type spiral stirrer (2) outside is provided with whisking appliance inner core (6); Between fermentor tank tank body (8) tank skin and whisking appliance inner core (6), be provided with temperature-adjusting heating device (18), a jar inner bottom part is provided with umbrella shape air distributor (19); Said fermentor tank tank body (8) top is provided with vapor pipe (3) and pressure control device (4), and the bottom is provided with umbrella shape air distributor inlet pipe (10) and the spoil disposal husky outlet of row (23); Be communicated with the biogas recycle system, natural pond fluid circulation, the gas-liquid recycle system, heating system, temperature controlling system and biogas residue and biogas liquid respectively on said fermentor tank tank body (8) sidewall and deposit the pond.
2. according to the described energy-conservation anaerobic ferment devices of claim 1, it is characterized in that: the said biogas recycle system comprises that the first pretreatment system PRO-S1, biogas pre-treatment valve (302), the 4th pretreatment system PRO-S4 and the biogas self-circulation that are communicated with vapor pipe (3) on the fermentor tank tank body (8) through pipeline stir pipe network valve (3022); The biogas self-circulation is stirred pipe network valve (3022) and is connected with umbrella shape air distributor inlet pipe (10), and umbrella shape air distributor inlet pipe (10) is communicated with said umbrella shape air distributor (19);
The said first pretreatment system PRO-S1 comprises negative pressure protector, liquid packing, water trap, devulcanizer and snubber assembly; Said the 4th pretreatment system PRO-S4 comprises air compressor machine, pressurized vessel gas storage holder and pressure regulating box, connects through gas pipeline between each device; Said the 4th pretreatment system PRO-S4 stirs pipe network valve (3022) through biogas gas line network valve (3021), biogas self-circulation and biogas automatic control flow valve door (3023) is communicated with user, the set steam boiler of umbrella shape air distributor inlet pipe (10) and system (11) respectively.
3. according to the described energy-conservation anaerobic ferment devices of claim 1; It is characterized in that: the said gas-liquid recycle system comprises the gas-liquid circulation device (9) that is connected with the biogas recycle system through gas-liquid recycle system valve (301), and gas-liquid circulation device (9) is communicated with fermentor tank tank body (8) through the first fluid circulation system valve (901), the second fluid circulation system valve (902) and the 3rd fluid circulation system valve (903) that pipeline connects.
4. according to the described energy-conservation anaerobic ferment devices of claim 1, it is characterized in that: said natural pond fluid circulation comprises the second pretreatment system PRO-S2, valve well (12), natural pond liquid reflux cycle pump (14) and the natural pond liquid reflux cycle pump valve door (1401) that is communicated with fermentor tank tank body (8) through pipeline; The said second pretreatment system PRO-S2 comprises former parison manure pit, acidulated pool, heating metering pond, pump and valve well (12), connects through fluid pipeline between each device.
5. according to the described energy-conservation anaerobic ferment devices of claim 1, it is characterized in that: said heating system comprises the temperature-adjusting heating device (18) that is communicated with steam boiler (11) and municipal heat supply respectively; Said temperature-adjusting heating device (18) is communicated with steam boiler (11) and municipal heat supply through heating system water intaking valve (1101), heating system outlet valve (1102) and the water circulation system water intaking valve (1104) that pipeline connects; Said steam boiler (11) suction culvert is communicated with water pump (13), the 3rd pretreatment system PRO-S3 and steam boiler water intaking valve (1301); Said steam boiler (11) admission passage is communicated with biogas automatic control flow valve door (3023) and automatic control device AUTO; Said temperature-adjusting heating device (18) is communicated with the said second pretreatment system PRO-S2 through raw materials pretreatment system water intaking valve (1103).
6. according to the described energy-conservation anaerobic ferment devices of claim 1; It is characterized in that: said temperature controlling system comprises heat riser TEMP-C and the temperature detection thermopair (17) that is arranged at respectively on the fermentor tank tank body (8), and heat riser TEMP-C and temperature are surveyed thermopair (17) and be connected to thermostatical automatic control device AUTO.
7. according to the described energy-conservation anaerobic ferment devices of claim 1; It is characterized in that: cartridge type spiral stirrer (2) top is provided with the tubular shaft (21) that runs through its center in said; Reach the baffle plate and the defoaming device (5) that are driven by tubular shaft (21), tubular shaft (21) is provided with whisking appliance screw-blade (20); The bottom of tubular shaft (21) is connected with umbrella shape air distributor inlet pipe (10).
8. according to the described energy-conservation anaerobic ferment devices of claim 1; It is characterized in that: said temperature-adjusting heating device (18) forms " X " type structure by " order " font heating tube and " day " font heating tube combined crosswise; Water inlet pipe and rising pipe vertically are staggered successively, and a plurality of " X " type heating arrangement constitutes the multi-layer annular structure along the cavity between fermentor tank tank body (8) and the whisking appliance inner core (6); Said adjacent " X " type heating arrangement is 0.30-0.50m at interval, heating " annulus " layer and the separated 0.50-0.70m of interlayer, and the height of " X " type heating arrangement is the 1/8-1/6 of tank body internal diameter.
9. according to the described energy-conservation anaerobic ferment devices of claim 1; It is characterized in that: said umbrella shape air distributor (19) is the cone shaped opening structure; Be along the cone circumference and be symmetrically distributed with 2,4,8 or 16 Venturi gas liquid mixer (22); Each Venturi gas liquid mixer (22) is established three ports (2201); (2202) reach (2203); Its gas liquid mixer opening for feed (2202) places on umbrella shape air distributor (19) the circular cone outer side, and fluidized bed mixer gas liquid outlet (2203) places umbrella shape air distributor (19) inboard, and gas liquid mixer air inlet port (2201) is communicated with and is supported in the pipeline section middle part of gas liquid mixer opening for feed (2202) and fluidized bed mixer gas liquid outlet (2203) formation with inlet pipe (10); Gas liquid mixer (22) supports through umbrella shape air distributor (19) medial surface and umbrella shape air distributor inlet pipe (10) and is counterclockwise tilt distribution along the cone circumference, and vergence direction is consistent with the sense of rotation of said tubular shaft (21); Said angle of inclination is 3-10 °.
10. according to the described energy-conservation anaerobic ferment devices of claim 1, it is characterized in that: said fermentor tank tank body (8) volume is 500-3000m 3Monomer jar or disjunctor jar, tank body aspect ratio are 0.60-0.75, and tank body height and spiral stirrer sleeve aspect ratio are 0.50-0.80, and the tank body internal diameter is 0.30-0.50 with whisking appliance barrel bore ratio.
CN2011204575620U 2011-11-17 2011-11-17 Energy-saving anaerobic fermentation device Expired - Lifetime CN202322828U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102517199A (en) * 2011-11-17 2012-06-27 西安建筑科技大学 Multi-cycle stirring egg-shaped anaerobic fermentation system
CN105624033A (en) * 2016-03-17 2016-06-01 上海市政工程设计研究总院（集团）有限公司 Organic refuse dry anaerobic digestion device
CN105861280A (en) * 2016-04-19 2016-08-17 成都中牧生物药业有限公司 Fermentation tank capable of improving stirring effect
CN106857099A (en) * 2017-03-21 2017-06-20 李梦颖 A kind of agricultural booth with biogas warm-up auxiliary system
CN109370885A (en) * 2018-12-14 2019-02-22 莱西市产业技术研究院 A kind of chicken farm anaerobic fermentation system and its application method
CN111304065A (en) * 2020-04-02 2020-06-19 上海环境工程设计研究院有限公司 Fruit and vegetable wet anaerobic fermentation device based on gas stirring and working method thereof
WO2021001716A1 (en) * 2019-06-29 2021-01-07 Mehta Alpesh An automated anaerobic digester

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102517199A (en) * 2011-11-17 2012-06-27 西安建筑科技大学 Multi-cycle stirring egg-shaped anaerobic fermentation system
CN102517199B (en) * 2011-11-17 2013-02-06 西安建筑科技大学 Multi-cycle stirring egg-shaped anaerobic fermentation system
CN105624033A (en) * 2016-03-17 2016-06-01 上海市政工程设计研究总院（集团）有限公司 Organic refuse dry anaerobic digestion device
CN105861280A (en) * 2016-04-19 2016-08-17 成都中牧生物药业有限公司 Fermentation tank capable of improving stirring effect
CN106857099A (en) * 2017-03-21 2017-06-20 李梦颖 A kind of agricultural booth with biogas warm-up auxiliary system
CN106857099B (en) * 2017-03-21 2022-05-24 李梦颖 Take biogas heating auxiliary system's agricultural greenhouse
CN109370885A (en) * 2018-12-14 2019-02-22 莱西市产业技术研究院 A kind of chicken farm anaerobic fermentation system and its application method
WO2021001716A1 (en) * 2019-06-29 2021-01-07 Mehta Alpesh An automated anaerobic digester
CN111304065A (en) * 2020-04-02 2020-06-19 上海环境工程设计研究院有限公司 Fruit and vegetable wet anaerobic fermentation device based on gas stirring and working method thereof

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