CN110218635A - A kind of marsh gas fermenting system for thermal agitation - Google Patents

A kind of marsh gas fermenting system for thermal agitation Download PDF

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Publication number
CN110218635A
CN110218635A CN201910514772.XA CN201910514772A CN110218635A CN 110218635 A CN110218635 A CN 110218635A CN 201910514772 A CN201910514772 A CN 201910514772A CN 110218635 A CN110218635 A CN 110218635A
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CN
China
Prior art keywords
heat
anaerobic fermentation
fermentation tank
chamber
agitating shaft
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Pending
Application number
CN201910514772.XA
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Chinese (zh)
Inventor
胡建军
张全国
王伟
张寰
郭前辉
黄黎
贺超
闫宇宁
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Henan Agricultural University
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Henan Agricultural University
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Priority to CN201910514772.XA priority Critical patent/CN110218635A/en
Publication of CN110218635A publication Critical patent/CN110218635A/en
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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M27/00Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02Stirrer or mobile mixing elements
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature

Abstract

The invention belongs to environmentally friendly new energy fields, more particularly to a kind of marsh gas fermenting system for thermal agitation, the anaerobic fermentation tank and agitating shaft of feed inlet and gas outlet are equipped with including top, the stirring blade of shaft bottom is located in anaerobic fermentation tank, the system also includes heating plants, heating plant includes heat-conducting mechanism, and heat-conducting mechanism end is located at the top of agitating shaft.The configuration of the present invention is simple, the environment for being able to maintain anaerobic fermentation are in suitable temperature, prevent anaerobic fermentation from being influenced by extraneous temperature.

Description

A kind of marsh gas fermenting system for thermal agitation
Technical field
The invention belongs to environmentally friendly new energy field more particularly to a kind of marsh gas fermenting systems for thermal agitation.
Background technique
Currently, large and medium-sized biogas project is increasing both at home and abroad, especially medium temperature high concentration material anaerobic fermentation is scale The trend for changing biogas project development, in the factor for influencing anaerobic fermentation gas production rate, temperature is one of key factor, mesophilic digestion Most suitable temperature be 35~40 DEG C.But run high concentration material biogas mesophilic digestion engineering throughout the year, especially in the winter Season is also able to maintain efficient, constant gas production, it is therefore necessary to carry out strict control to the temperature of anaerobic fermentation feed liquid, it is suitable to take Heating and thermal insulation measure, guarantee fermentation temperature do not change with ambient air temperature.Therefore the heat temperature raising mode of economical and efficient is selected It must be solved the problems, such as the development of large and medium-sized biogas project.
It is with rice, corn that agricultural waste fermentation, which produces biogas, and the agricultural crop straws such as peanut are as raw material, by crushing simultaneously After being pre-processed, after being mixed in a certain ratio with pig manure be added anaerobic ferment devices in carry out anaerobic fermentation come produce biogas and Organic fertilizer produces biogas as anaerobic ferment devices frequently with continuous stirred reactor system in the industrial production.I.e. one The fermentation of feed liquid is completed in vapor tight tank body, the process that biogas generates, it is interior in reaction unit that agitating device is installed, make proferment Material and microorganism be in is thoroughly mixed state, the raw material newly entered due to stirring action quickly with whole fermentation liquids in fermentor Strain mixing, makes fermentation substrate concentration remain relatively low state.Since structure is simple in traditional reaction unit, fluidised form It is single, it cannot achieve function division and the separation of biofacies in reactor assembly, traditional anaerobic ferment devices caused to stir Low efficiency causes fermentation efficiency and factor of created gase low.
Summary of the invention
The object of the present invention is to provide a kind of marsh gas fermenting system for thermal agitation, the configuration of the present invention is simple is able to maintain The environment of anaerobic fermentation is in suitable temperature, prevents anaerobic fermentation from being influenced by extraneous temperature.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
A kind of marsh gas fermenting system for thermal agitation is equipped with anaerobic fermentation tank and the stirring of feed inlet and gas outlet including top The stirring blade of axis, shaft bottom is located in anaerobic fermentation tank, and the system also includes heating plant, heating plant includes leading Heat engine structure, heat-conducting mechanism end are located at the top of agitating shaft.
Preferably, the heat-conducting mechanism includes heat-insulation and heat-preservation chamber and is set to the intracavitary heat conducting pipe of heat-insulation and heat-preservation, described Agitating shaft top is in chondritic and intracavitary positioned at heat-insulation and heat-preservation, and heat conducting pipe one end shape in curved surface is simultaneously located at agitating shaft top in gap Outside the chondritic at end.
Preferably, the heating plant further includes heat exchange mechanism, and heat exchange mechanism includes being equipped with flow of media pipeline Solar thermal collector, medium circulation pipeline and heat exchanger with medium flow field pipeline composition closed-circuit pipe, heat exchanger connection Medium circulation pipeline and heat-conducting mechanism.
Preferably, the interior heat-insulation and heat-preservation for being equipped with phase change heat storage material and being set to heat-conducting mechanism of the heat exchanger is intracavitary, The one end of heat conducting pipe far from agitating shaft expands shape in area and is located at internal heat exchanger, and the medium circulation pipeline passes through heat-insulated Incubation cavity and internal heat exchanger setting.
Preferably, the agitating shaft and feed inlet are coaxially disposed, in the anaerobic fermentation tank by be coaxially disposed first every It is the first chamber, second chamber and third chamber being sequentially connected to, the feed inlet position from cylinder and the second isolating cylinder radial separations In in first chamber.
Preferably, it is connect at the top of first isolating cylinder with peripheral inner wall at the feed inlet of anaerobic fermentation tank, the first isolation Cylinder bottom is open and radially bending-like inwardly.
Preferably, the second isolating cylinder open top and the bottom interior wall of bottom and anaerobic fermentation tank connect, second every Axial inner wall from cylinder is equipped with the striker plate radially extended.
Preferably, the stirring blade of the agitating shaft is pierced by first chamber and is located at second chamber bottom, the paddle Piece is the axial--flow blading for forcing material to be lifted up.
Preferably, the axial inner wall of the anaerobic fermentation tank is equipped with the striker plate radially extended, the anaerobic fermentation tank Gas outlet axial symmetry be set to anaerobic fermentation tank top two sides and be located at striker plate above.
Preferably, the agitating shaft is also radially provided with several stirring rods, stirring rod at the top of the shaft in anaerobic fermentation tank Towards anaerobic fermentation tank bottom fold, the stirring rod, which is equipped with, is vertically equipped with several protrusions for bottom.
The course of work of the present invention is as follows:
Fermentation materials are imported wherein from the feed inlet of anaerobic fermentation tank first, while making agitating shaft rotation (agitating shaft can be with Belt transmissioning mode using motor as power source), fermentation materials enter in the first chamber that the first isolating cylinder is formed first, Then enter the second chamber that the second isolating cylinder is formed from the first isolating cylinder bottom, when second chamber is fermented material filling completely Afterwards, fermentation materials are from overflow at the top of the second isolating cylinder to the third being made of the second isolation drum outer wall and anaerobic fermentation top tank structure In chamber.The flow process of fermentation materials extends path to the maximum extent, improves the reaction time of fermentation materials, in turn Improve methane gas producing amount.
Meanwhile the solar thermal collector of heating plant absorbs luminous energy in the present invention, and is converted into medium circulation pipeline The thermal energy of medium, the thermal energy of medium pass to the savings that the phase change heat storage material in heat exchanger realizes thermal energy, and in subsequent mistake The thermal energy of Cheng Zhong, savings are transferred to agitating shaft by heat pipe, and then agitating shaft will be warm by shaft, stirring blade and stirring rod The fermentation materials that can be transferred in anaerobic fermentation tank, so that the yeasting in anaerobic fermentation tank is in suitable fermentation temperature. More optimize, end of the heat pipe in heat exchanger is arranged to area bulb by the present invention, improves heat pipe and phase-transition heat-storage material The contact area of material improves heat exchange effect;Likewise, agitating shaft top is in be provide with to stir in the spherical and heat pipe other end is expanded The curved for mixing axis top, also for improve both heat exchange effect, and heat-insulation and heat-preservation chamber can effectively prevent it is above-mentioned Thermal losses in heat transfer process, it should be noted that heat-insulation and heat-preservation chamber and the curved end of heat pipe need reserved stir Mix the space that axis is circumferentially rotated.
Simultaneously in above process, since agitating shaft rotates, so that stirring blade rotation carries out upper pushing-type to fermentation materials Stirring and the rotation of stirring rod can realize the stirring to corresponding fermentation materials, not only prevent fermentation materials from generating lamination, The fermentation materials contacted with stirring blade and stirring rod can be also made to heat up simultaneously, especially the protrusion on stirring rod, Ke Yiti The contact area of high fermentation materials and stirring rod improves heat-transfer effect, while making distribution of the heat in fermentation materials more Uniformly.
It should also be noted that, in the bent end and the second isolating cylinder and anaerobic fermentation tank of the first isolating cylinder bottom Flow-stopping plate on wall can effectively stop the movement speed of the bulky grain substrate in fermentation materials, and then improve ferment effect, Generate more biogas.The biogas of generation in anaerobic fermentation tank is finally discharged and is collected from gas outlet.
Compared with the prior art, the invention has the following advantages:
1) solar energy is efficiently used, thermal energy is being translated into and is being transferred in anaerobic fermentation tank, improves anaerobic fermentation tank inner ring The temperature in border prevents extraneous low temperature area to adverse effect caused by whole fermentation;
2) heat transference efficiency is high, by can effectively improve hot biography to Optimal Structure Designings such as heating plant and rabbling mechanisms Efficiency is passed, while thermal loss is effectively reduced using heat-insulation and heat-preservation chamber;
3) fermentation time is long, gas production is high, by the optimization design to anaerobic fermentation tank inner space, so that fermentation materials are being detested Movement routine in aerobe fermentation tank is extended, and fermentation efficiency and gas production are improved.
Detailed description of the invention
Fig. 1 is in specific embodiment for the structural schematic diagram of the marsh gas fermenting system of thermal agitation.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
As shown in Figure 1, a kind of marsh gas fermenting system for thermal agitation, feed inlet 11 and gas outlet 12 are equipped with including top Anaerobic fermentation tank 1 and agitating shaft 2, the axial inner wall of the anaerobic fermentation tank 1 is equipped with the striker plate 3 radially extended, described to detest 13 axial symmetry of gas outlet of aerobe fermentation tank 1 is set to the top two sides of anaerobic fermentation tank 1 and is located at 3 top of striker plate.
The stirring blade 22 of 2 bottom of agitating shaft is located in anaerobic fermentation tank 1, and the agitating shaft 2 is coaxially set with feed inlet 11 It sets, by the first isolating cylinder 13 for being coaxially disposed with 14 radial separations of the second isolating cylinder is sequentially to be connected in the anaerobic fermentation tank 1 First chamber, second chamber and third chamber, feed inlet 11 is located in first chamber;First isolating cylinder, 13 top with detest Peripheral inner wall connects at the feed inlet of aerobe fermentation tank, and 13 bottom of the first isolating cylinder is open and radially bending-like inwardly;Described Two isolating cylinders, 14 open top and the bottom interior wall of bottom and anaerobic fermentation tank connect, and set on the axial inner wall of the second isolating cylinder 14 There is the striker plate 3 radially extended, the stirring blade of the agitating shaft 2 is pierced by first chamber and is located at second chamber bottom, described Stirring blade is the axial--flow blading for forcing material to be lifted up, and agitating shaft 2 is also radial at the top of the shaft in anaerobic fermentation tank Equipped with several stirring rods 23,23 bottom of stirring rod is towards anaerobic fermentation tank bottom fold and is located in third chamber, the stirring Bar 23, which is equipped with, is vertically equipped with several raised 24.
The system also includes heating plant, heating plant includes heat-conducting mechanism and heat exchange mechanism:
Heat-conducting mechanism includes heat-insulation and heat-preservation chamber 4 and the heat conducting pipe being set in heat-insulation and heat-preservation chamber 4 41, the agitating shaft top 21 In chondritic and it is located in heat-insulation and heat-preservation chamber 4, the shape in curved surface of heat conducting pipe one end 43 is simultaneously located at agitating shaft top 21 in gap Outside chondritic.
Heat exchange mechanism include equipped with flow of media pipeline 51 solar thermal collector 5, with medium flow field pipeline composition it is closed circuit The medium circulation pipeline 51 and heat exchanger 52 of pipeline are equipped with phase change heat storage material and are set in the heat exchanger 52 and lead The heat-insulation and heat-preservation of heat engine structure is intracavitary, and the one end 42 of heat conducting pipe far from agitating shaft is expanded shape in area and is located in heat exchanger 53 Portion, the medium circulation pipeline 51 passes through heat-insulation and heat-preservation chamber and internal heat exchanger is arranged.
The course of work of the present invention is as follows:
Fermentation materials are imported wherein from the feed inlet of anaerobic fermentation tank first, while making agitating shaft rotation (agitating shaft can be with Belt transmissioning mode using motor as power source), fermentation materials enter in the first chamber that the first isolating cylinder is formed first, Then enter the second chamber that the second isolating cylinder is formed from the first isolating cylinder bottom, when second chamber is fermented material filling completely Afterwards, fermentation materials are from overflow at the top of the second isolating cylinder to the third being made of the second isolation drum outer wall and anaerobic fermentation top tank structure In chamber.The flow process of fermentation materials extends path to the maximum extent, improves the reaction time of fermentation materials, in turn Improve methane gas producing amount.
Meanwhile the solar thermal collector of heating plant absorbs luminous energy in the present invention, and is converted into medium circulation pipeline The thermal energy of medium, the thermal energy of medium pass to the savings that the phase change heat storage material in heat exchanger realizes thermal energy, and in subsequent mistake The thermal energy of Cheng Zhong, savings are transferred to agitating shaft by heat pipe, and then agitating shaft will be warm by shaft, stirring blade and stirring rod The fermentation materials that can be transferred in anaerobic fermentation tank, so that the yeasting in anaerobic fermentation tank is in suitable fermentation temperature. More optimize, end of the heat pipe in heat exchanger is arranged to area bulb by the present invention, improves heat pipe and phase-transition heat-storage material The contact area of material improves heat exchange effect;Likewise, agitating shaft top is in be provide with to stir in the spherical and heat pipe other end is expanded The curved for mixing axis top, also for improve both heat exchange effect, and heat-insulation and heat-preservation chamber can effectively prevent it is above-mentioned Thermal losses in heat transfer process, it should be noted that heat-insulation and heat-preservation chamber and the curved end of heat pipe need reserved stir Mix the space that axis is circumferentially rotated.
Simultaneously in above process, since agitating shaft rotates, so that stirring blade rotation carries out upper pushing-type to fermentation materials Stirring and the rotation of stirring rod can realize the stirring to corresponding fermentation materials, not only prevent fermentation materials from generating lamination, The fermentation materials contacted with stirring blade and stirring rod can be also made to heat up simultaneously, especially the protrusion on stirring rod, Ke Yiti The contact area of high fermentation materials and stirring rod improves heat-transfer effect, while making distribution of the heat in fermentation materials more Uniformly.
It should also be noted that, in the bent end and the second isolating cylinder and anaerobic fermentation tank of the first isolating cylinder bottom Flow-stopping plate on wall can effectively stop the movement speed of the bulky grain substrate in fermentation materials, and then improve ferment effect, Generate more biogas.The biogas of generation in anaerobic fermentation tank is finally discharged and is collected from gas outlet.

Claims (10)

1. a kind of marsh gas fermenting system for thermal agitation is equipped with anaerobic fermentation tank and the stirring of feed inlet and gas outlet including top The stirring blade of axis, shaft bottom is located in anaerobic fermentation tank, which is characterized in that the system also includes heating plants, supply Thermal includes heat-conducting mechanism, and heat-conducting mechanism end is located at the top of agitating shaft.
2. as described in claim 1 for the marsh gas fermenting system of thermal agitation, which is characterized in that the heat-conducting mechanism includes heat-insulated Incubation cavity and it is set to the intracavitary heat conducting pipe of heat-insulation and heat-preservation, the agitating shaft top is in chondritic and is located at heat-insulation and heat-preservation chamber Interior, heat conducting pipe one end shape in curved surface is simultaneously located at outside the chondritic on agitating shaft top in gap.
3. as claimed in claim 1 or 2 for the marsh gas fermenting system of thermal agitation, which is characterized in that the heating plant also wraps Heat exchange mechanism is included, heat exchange mechanism includes the solar thermal collector for being equipped with flow of media pipeline, forms and close with medium flow field pipeline The medium circulation pipeline and heat exchanger of road pipeline, heat exchanger connect medium circulation pipeline and heat-conducting mechanism.
4. as claimed in claim 3 for the marsh gas fermenting system of thermal agitation, which is characterized in that be equipped with phase in the heat exchanger Shape is expanded simultaneously in area in the change heat storage material and heat-insulation and heat-preservation for being set to heat-conducting mechanism is intracavitary, the one end of heat conducting pipe far from agitating shaft Positioned at internal heat exchanger, the medium circulation pipeline passes through heat-insulation and heat-preservation chamber and internal heat exchanger is arranged.
5. as described in claim 1 for the marsh gas fermenting system of thermal agitation, which is characterized in that the agitating shaft and feed inlet are same Axis setting, the anaerobic fermentation tank is interior to be sequentially connected to by the first isolating cylinder being coaxially disposed and the second isolating cylinder radial separations First chamber, second chamber and third chamber, the feed inlet are located in first chamber.
6. as claimed in claim 5 for the marsh gas fermenting system of thermal agitation, which is characterized in that at the top of first isolating cylinder with Peripheral inner wall connects at the feed inlet of anaerobic fermentation tank, and the first isolating cylinder bottom is open and radially bending-like inwardly.
7. as claimed in claim 5 for the marsh gas fermenting system of thermal agitation, which is characterized in that spacious at the top of second isolating cylinder Mouth and the connection of the bottom interior wall of bottom and anaerobic fermentation tank, the axial inner wall of the second isolating cylinder are equipped with the backgauge radially extended Plate.
8. as claimed in claim 5 for the marsh gas fermenting system of thermal agitation, which is characterized in that the stirring blade of the agitating shaft It is pierced by first chamber and is located at second chamber bottom, the stirring blade is the axial--flow blading for forcing material to be lifted up.
9. as described in claim 1 for the marsh gas fermenting system of thermal agitation, which is characterized in that the axial direction of the anaerobic fermentation tank Inner wall is equipped with the striker plate radially extended, and the gas outlet axial symmetry of the anaerobic fermentation tank is set to the top of anaerobic fermentation tank Two sides are simultaneously located above striker plate.
10. as described in claim 1 for the marsh gas fermenting system of thermal agitation, which is characterized in that the agitating shaft is sent out in anaerobism Several stirring rods are also radially provided at the top of shaft in fermentation tank, stirring rod bottom is described to stir towards anaerobic fermentation tank bottom fold Bar is mixed to be equipped with vertically equipped with several protrusions.
CN201910514772.XA 2019-06-14 2019-06-14 A kind of marsh gas fermenting system for thermal agitation Pending CN110218635A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0231145A2 (en) * 1986-01-17 1987-08-05 Tschudin & Heid AG Device for the treatment of microorganisms and method for the operation of this device
CN102070289A (en) * 2010-12-10 2011-05-25 河南农业大学 Solar auxiliary heating methane production device
CN102816692A (en) * 2012-09-13 2012-12-12 黑龙江省科学院科技孵化中心 Anaerobic fermentation reactor for combined use
CN203820775U (en) * 2014-04-25 2014-09-10 浙江瑞邦药业有限公司 Fermentation tank
CN105331520A (en) * 2014-08-12 2016-02-17 辽宁北方环境保护有限公司 Integrated gas-water separation protector
CN107002014A (en) * 2014-09-30 2017-08-01 东能源热电有限公司 The method and bioreactor of microbial digestion are carried out using immobilized biomembrane
CN210127232U (en) * 2019-06-14 2020-03-06 河南农业大学 Heat conduction formula marsh gas anaerobic fermentation system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0231145A2 (en) * 1986-01-17 1987-08-05 Tschudin & Heid AG Device for the treatment of microorganisms and method for the operation of this device
CH665425A5 (en) * 1986-01-17 1988-05-13 Tschudin & Heid Ag DEVICE FOR TREATING MICROORGANISMS AND METHOD FOR OPERATING THE DEVICE.
CN102070289A (en) * 2010-12-10 2011-05-25 河南农业大学 Solar auxiliary heating methane production device
CN102816692A (en) * 2012-09-13 2012-12-12 黑龙江省科学院科技孵化中心 Anaerobic fermentation reactor for combined use
CN203820775U (en) * 2014-04-25 2014-09-10 浙江瑞邦药业有限公司 Fermentation tank
CN105331520A (en) * 2014-08-12 2016-02-17 辽宁北方环境保护有限公司 Integrated gas-water separation protector
CN107002014A (en) * 2014-09-30 2017-08-01 东能源热电有限公司 The method and bioreactor of microbial digestion are carried out using immobilized biomembrane
CN210127232U (en) * 2019-06-14 2020-03-06 河南农业大学 Heat conduction formula marsh gas anaerobic fermentation system

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