CN110551616B - Omnibearing dynamic anaerobic fermentation tank - Google Patents
Omnibearing dynamic anaerobic fermentation tank Download PDFInfo
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- CN110551616B CN110551616B CN201910890042.XA CN201910890042A CN110551616B CN 110551616 B CN110551616 B CN 110551616B CN 201910890042 A CN201910890042 A CN 201910890042A CN 110551616 B CN110551616 B CN 110551616B
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- 238000000855 fermentation Methods 0.000 title claims abstract description 136
- 230000004151 fermentation Effects 0.000 claims abstract description 113
- 238000003860 storage Methods 0.000 claims abstract description 69
- 239000007788 liquid Substances 0.000 claims abstract description 62
- 238000007599 discharging Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 239000010802 sludge Substances 0.000 abstract description 9
- 241001391944 Commicarpus scandens Species 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 52
- 239000002002 slurry Substances 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000003756 stirring Methods 0.000 description 9
- 241000282326 Felis catus Species 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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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
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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
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/36—Means for collection or storage of gas; Gas holders
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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
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
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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
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/20—Degassing; Venting; Bubble traps
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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
- C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
- C12M33/04—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus by injection or suction, e.g. using pipettes, syringes, needles
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Genetics & Genomics (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Sustainable Development (AREA)
- Microbiology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Clinical Laboratory Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses an omnibearing dynamic anaerobic fermentation tank, which comprises a fermentation tank body, a fermentation chamber, a gas storage chamber, a top return liquid storage tank, a feed pipe, a communicating pipe, an exhaust pipe, a discharge pipe and a manhole; the top of the fermentation tank body is provided with a top cover, the fermentation tank body is internally provided with a tank top, the top of the tank top is provided with a top return liquid storage tank, the lower part of the tank top is provided with a fermentation chamber, and a space between the liquid level in the fermentation chamber and the tank top is provided with a gas storage chamber; the feed pipe and the communicating pipe are arranged on the inner wall of the fermentation tank body; the exhaust pipe is arranged at the top of the pool top, communicated with the air storage chamber and extends out from the top cover; the discharging pipe is arranged on the outer side wall of the fermentation tank body and is communicated with the top return liquid storage tank, so that the technical problems that sludge is accumulated in the existing fermentation tank, the fermentation tank is easy to break and the biogas pressure is unstable due to unreasonable structural design, and the utilization rate is low are solved.
Description
Technical Field
The invention relates to the technical field of biomass energy development, in particular to a cylindrical omnibearing dynamic anaerobic fermentation tank which is suitable for biogas engineering.
Background
The biogas engineering is to produce biogas by anaerobic fermentation with agricultural and agricultural product processing organic waste and the like as raw materials. The biogas can be used for household energy, industrial combustion, power generation and other fields, and has great significance for relieving the increasingly forbidden rural environment non-point source pollution dilemma and energy shortage problem in China.
The hydraulic methane tank is a traditional methane tank with the largest application amount in the current methane engineering, and comprises a fermentation tank body, a feed pipe, a discharge pipe, a sealing cover and the like. The feed pipe and the discharge pipe are arranged at two sides of the fermentation tank body, the feed pipe can be used for adding fermentation raw materials, and the discharge pipe is used for discharging waste such as biogas slurry and biogas residues generated after fermentation. The hydraulic methane tank has the defects that the pressure of methane in the methane tank is unstable, the fluctuation is large, and the full combustion of the methane in methane tools such as lamps, cookers and the like is not facilitated, so that the utilization rate of the methane is reduced. The biogas storage space is small, and particularly, the sludge of the biogas digester with a large diameter is easy to accumulate at the bottom and two sides of the biogas digester to form an ineffective volume. The material inlet and outlet parts of the methane tank are arranged on two sides of the fermentation tank, the whole structure is poor, and certain parts are broken due to the influence of load.
Disclosure of Invention
The invention aims to overcome the technical defects, and provides an omnibearing dynamic anaerobic fermentation tank which solves the problems that sludge in a methane tank is accumulated at the bottom and two sides of the tank to form invalid volume so as to cause low fermentation gas yield in the prior art; the pressure in the methane tank is unstable, the fluctuation is large, and the methane tank cannot be fully combusted; the whole structure of the methane tank is poor, and the methane tank is influenced by load to cause the fracture of certain parts.
In order to achieve the technical aim, the technical scheme of the invention comprises an omnibearing dynamic anaerobic fermentation tank, which comprises a fermentation tank body, a fermentation chamber, a gas storage chamber, a top return liquid storage tank, a feed pipe, a communicating pipe, an exhaust pipe, a discharge pipe and a manhole;
The fermentation tank body is cylindrical, a top cover is arranged at the top of the fermentation tank body, a tank top is arranged in the fermentation tank body, the top return liquid storage tank is arranged above the tank top, the fermentation chamber is arranged below the tank top, and the space between the liquid level in the fermentation chamber and the tank top is the gas storage chamber;
The feeding pipe and the communicating pipe are arranged on the inner wall of the fermentation tank body, the bottoms of the feeding pipe and the communicating pipe are communicated with the fermentation chamber, and the parts of the feeding pipe and the communicating pipe above the top of the tank are communicated with the top return liquid storage tank through a switch;
the exhaust pipe is arranged at the top of the pool top, communicated with the air storage chamber and extends out from the top cover, and an exhaust valve is further arranged on the exhaust pipe;
the discharging pipe is arranged on the outer side wall of the fermentation tank body and is communicated with the communicating pipe in the top return liquid storage tank;
The manhole comprises a barrel body which is arranged on the top of the pool and extends downwards, the edge of the top of the barrel body is in sealing connection with the top of the pool, and the top end and the bottom end of the barrel body are both provided with openings.
Further, the tank top is arranged in an arch shape, and the exhaust pipe is arranged at the center of the tank top.
Further, the top of the pool is an arched reinforced concrete layer.
Further, the communicating pipe is provided with a plurality of communicating pipes, and a plurality of communicating pipes and the feeding pipe are uniformly arranged along the circumferential direction of the inner wall of the cylindrical fermentation tank.
Further, the parts of the feeding pipe and the communicating pipe above the top of the tank are respectively connected with an elbow, and the elbows are respectively communicated with the feeding pipe and the top return liquid storage tank and the communicating pipe and the top return liquid storage tank.
Further, the elbow is a right-angle elbow, one end of the right-angle elbow is connected with one side of the feeding pipe or the communicating pipe, and the opening of the other end of the right-angle elbow is upwards communicated with the top return liquid storage tank.
Further, the pipe type switch is matched with the elbow, and the diameter of the outer wall of the pipe type switch is the same as that of the inner wall of the elbow.
Further, the elbow is arranged at the bottom of the top return liquid storage tank.
Further, the distance between the bottoms of the feed pipe and the communicating pipe and the bottom of the fermentation tank body is set to be 0.3 meter.
Further, still be provided with manhole and cat ladder on the inner wall of the fermentation cylinder body, still include the cat ladder, the cat ladder sets up the inner wall of the fermentation cylinder body, the manhole still including set up respectively first perforation and the second perforation on the top cap and the pond top, and respectively with first perforation and the cooperation first apron and the second apron of second perforation, first perforation with the second perforation aligns, the barrel is close to the second perforation, the cat ladder passes first perforation and second perforation and extend to the bottom of the fermentation cylinder body.
Compared with the prior art, the invention has the beneficial effects that: 1. the omnibearing dynamic anaerobic fermentation tank provided by the invention can dynamically stir the biogas slurry and the silt in the fermentation tank body by omnibearing water flow impact every day to form an omnibearing dynamic process in the fermentation tank, can promote the fermentation process, is beneficial to improving the gas production efficiency, and compared with the traditional fermentation device, the omnibearing dynamic anaerobic fermentation tank does not need to be provided with a stirring system, but uses 6 water flows or 1 emergency water flow formed by a feed pipe and a communicating pipe to stir the biogas slurry in the fermentation chamber from bottom to top, impacts the silt, and reduces the energy consumption.
2. According to the invention, the pressure is regulated by propping back biogas slurry in the fermentation chamber, when the gas yield of the biogas slurry is low, less biogas is stored in the gas storage chamber, and along with the increase of the gas yield, the pressure of the biogas in the gas storage chamber is gradually increased to push the biogas slurry to the propping back liquid storage tank, and the pressure value is reduced by increasing the space in the gas storage chamber, and when the biogas storage chamber is in an extreme gas yield state, the pressure surface in the fermentation chamber is reduced below a manhole, and the biogas in the gas storage chamber is discharged through the manhole, so that the pressure value is reduced, the stability of the pressure is further maintained, and the safety of the biogas tank is ensured.
3. The fermentation tank body of the omnibearing dynamic anaerobic fermentation tank is cylindrical, the inlet communicating pipe and the communicating pipe are arranged on the inner wall of the fermentation tank body, and the manhole is also arranged in the fermentation tank body, so that three components of the feed pipe, the communicating pipe and the fermentation tank completely form an integrated cylindrical integral structure, the structural integrity is realized, the stress is better, and the service life is longer. The anaerobic fermentation tank mechanism is compact, the occupied space is reduced, and the occupied area of the land is saved.
Drawings
FIG. 1 is a schematic diagram of the structure of the omnibearing dynamic anaerobic fermentation tank provided by the invention;
FIG. 2 is a distribution diagram of a communication pipe according to the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is a schematic diagram of the gas production and gas utilization process of the omnibearing dynamic anaerobic fermentation tank of the invention;
FIG. 5 is a schematic diagram of the feeding and discharging process of the omnibearing dynamic anaerobic fermentation tank of the present invention;
FIG. 6 is a schematic diagram of the gas-producing end state of the omnibearing dynamic anaerobic fermentation tank of the present invention;
In the figure: 1-fermentation tank body, 2-cat ladder, 3-fermentation chamber, 4-communicating pipe, 5-manhole, 6-discharging pipe switch, 7-discharging pipe, 8-top cover, 9-tank top, 10-air storage chamber, 11-blast pipe, 12-blast pipe switch, 13-top return liquid storage tank, 14-elbow, 15-pipe switch, 16-feeding pipe, 17-pipe switch hole, 18-fermentation chamber liquid level, 19-top return liquid storage tank liquid level, 20-barrel.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in figure 1, in order to solve the problems that in the prior art, sludge in a methane tank is accumulated at the bottom and two sides of the tank to form an ineffective volume, so that the gas yield is low and the methane tank cannot fully ferment; the pressure in the methane tank is unstable, the fluctuation is large, and the methane tank cannot be fully combusted; the invention provides an omnibearing dynamic anaerobic fermentation tank, which comprises a fermentation tank body 1, a fermentation chamber 3, a gas storage chamber 10, a top return liquid storage tank 13, a feed pipe 13, a communicating pipe 4, an exhaust pipe 11, a discharge pipe 6 and a manhole 5, wherein the whole structure of the biogas digester is poor and the fracture of certain parts is caused by the influence of load; the fermentation tank body 1 is cylindrical, a top cover 8 is arranged at the top of the fermentation tank body 1, a tank top 9 is arranged in the fermentation tank body 1, the top return liquid storage tank 13 is arranged above the tank top 9, the fermentation chamber 3 is arranged below the tank top 9, and a space between a liquid level 18 in the fermentation chamber 3 and the tank top 9 is the gas storage chamber 10; the feeding pipe 16 and the communicating pipe 4 are arranged on the inner wall of the fermentation tank body 1, the bottoms of the feeding pipe 16 and the communicating pipe 4 are communicated with the fermentation chamber 3, and the parts of the feeding pipe 16 and the communicating pipe 4 above the tank top 9 are communicated with the top return liquid storage tank 13 through a switch; the exhaust pipe 11 is arranged at the top of the pool top 9, is communicated with the air storage chamber 10 and extends out of the top cover 8, and an exhaust valve is further arranged on the exhaust pipe 11; the discharging pipe 7 is arranged on the outer side wall of the fermentation tank 7 and is communicated with the top return liquid storage tank, and a discharging pipe switch 6 is arranged on the discharging pipe; the manhole 5 comprises a barrel 20 which is arranged on the tank top 9 and extends downwards, the edge of the top of the barrel is in sealing connection with the tank top 9, and the top end and the bottom end of the barrel 20 are both provided with openings.
Wherein the top cover 8 is arranged in an arch shape, and the exhaust pipe 11 is arranged at the center of the top cover 8. The top cover 8 is arranged in an arch shape, so that the air storage capacity can be increased.
Wherein the tank top 9 is an arched reinforced concrete layer. The pool top 9 is formed by cast-in-situ.
As shown in fig. 2, the communicating pipes 4 are provided in plurality, and the plurality of communicating pipes 4 and the feeding pipe 16 are uniformly arranged along the circumferential direction of the inner wall of the cylindrical fermenter 1. In order to make the whole structure better and improve the whole strength, a plurality of communicating pipes 4 and feeding pipes 16 are uniformly arranged along the circumferential direction of the inner wall of the cylindrical fermentation tank body 1.
The parts of the feed pipe 16 and the communicating pipe 4, which are positioned on the tank top 9, are respectively connected with an elbow 14, and the elbow 14 is respectively communicated with the feed pipe 16 and the top return liquid storage tank 13, and the communicating pipe 4 and the top return liquid storage tank 13.
As shown in fig. 3, the elbow 14 is a right-angle elbow, one end of the right-angle elbow is connected to one side of the feed pipe 16 or the communicating pipe 4, and the opening of the other end of the right-angle elbow is upward and is communicated with the top-return reservoir 13.
The pipe type switch 15 is matched with the elbow 14, and the diameter of the outer wall of the pipe type switch 15 is the same as that of the inner wall of the elbow 14.
Wherein the elbow 14 is arranged at the bottom of the top return liquid storage tank 13.
Wherein, the distance between the bottom of the feed pipe 16 and the communicating pipe 4 and the bottom of the fermentation tank body 1 is set to 0.3 meter. In order to stir the biogas slurry in the fermentation chamber 3 from bottom to top, the distance between the bottom of the feed pipe 16 and the communicating pipe 4 and the bottom of the fermentation tank 1 is preferably 0.3 meter
Wherein, still include cat ladder 2, cat ladder establishes 2 and puts the inner wall of fermentation cylinder body 1, manhole 5 still includes setting up respectively first perforation (not shown in the figure) on top cap 8 and the second perforation (not shown in the figure) on the pond top, and respectively with first apron and the second apron of perforation cooperation of first perforation and second, first perforation with the second perforation is aligned, barrel 20 is close to the second perforation, cat ladder 2 passes first perforation and second perforation and extend to the bottom of fermentation cylinder body 1. When the fermentation tank body 1 needs to be overhauled, a worker can enter the fermentation tank from the first perforation on the top cover 8 and sequentially pass through the top return liquid storage tank 13 and the second perforation along the cat ladder 2 to reach the bottom of the fermentation chamber 3 for overhauling.
The working process of the omnibearing dynamic anaerobic fermentation tank comprises the following steps:
1. Gas production and gas utilization process
As shown in fig. 4, step one: after entering the fermentation chamber 3 from the feeding pipe 16, the fermentation raw material is subjected to anaerobic fermentation in the fermentation chamber 3, the exhaust pipe switch is closed, along with the fermentation process, the biogas production amount is increased, the biogas is stored in the gas storage chamber, so that the gas pressure in the gas storage chamber is gradually increased, the gas pressure acts on the biogas slurry in the fermentation chamber 3 and pushes the biogas slurry in the fermentation chamber 3 to flow into the top-return liquid storage tank 13 above the tank top 9 through the feeding pipe 16 and the communicating pipe 4, a plurality of water flows are formed by the biogas slurry flowing into the feeding pipe 16 and the communicating pipe 4 from the fermentation chamber 3, and the biogas slurry at the bottom in the fermentation chamber 3 is stirred by the plurality of water flows, so that the fermentation process is promoted, and the gas production efficiency is improved. During the gas production process, the fermentation chamber liquid level 18 gradually decreases, and the top return liquid reservoir liquid level 19 gradually increases.
Step two: the exhaust pipe switch is turned on, methane in the gas storage chamber 10 is discharged through the exhaust pipe 7 for users, at the moment, because the pressure of the methane in the gas storage chamber 10 is reduced, the methane liquid in the feed pipe 16 and the communicating pipe 4 can flow back to the fermentation chamber through the elbow to form water flow, the water flow stirs the methane liquid in the fermentation chamber from top to bottom, the sludge at the bottom of the fermentation tank body 1 is impacted by the water flow to form an omnibearing dynamic process in the fermentation tank body 1, finally the liquid level 18 of the fermentation chamber rises again, and the liquid level 19 of the top returning liquid storage tank gradually falls.
Wherein, communicating pipe 4 can set up to many, and is preferential 5, and 5 communicating pipe 4 with inlet pipe 16 is along the circumferencial direction of the inner wall of fermentation cylinder body 1 evenly arranges, consequently when marsh gas in the gas storage chamber 10 promotes marsh gas liquid is followed communicating pipe 4 and inlet pipe 16 get into top and return liquid storage tank 13, 6 rivers can be formed, 6 rivers are right marsh gas liquid in the fermentation chamber 10 is stirred, further promotes the fermentation go on, improves the efficiency of gas production. Alternatively, the communication between 5 communicating pipes 4 or the feeding pipe 16 and the top return liquid storage tank 13 can be closed, and only one of the communicating pipes is communicated with the top return liquid storage tank 13, so that the fermentation liquid forms a water flow, the speed of the water flow is higher than that of 6 water flows, and the sludge at the bottom of the fermentation chamber 3 can be impacted, so that the sludge is prevented from accumulating.
More specifically, each of the communicating pipe 4 and the portion of the feeding pipe 16 above the tank top is connected with a elbow 14, and the elbow 14 is preferably a right-angle elbow, one end of the right-angle elbow is communicated with the feeding pipe 16 or the communicating pipe 4, and the other end is communicated with the top return liquid storage tank 13 and is opened upwards. The cylindrical fermentation tank also comprises a tubular switch 15 which is respectively matched with each elbow 14, and the diameter of the outer wall of the tubular switch 15 is the same as that of the inner wall of the elbow. The communication or disconnection between the communication pipe 4 or the feed pipe 16 and the top return reservoir 13 can be achieved by opening and closing each pipe switch.
2. Feeding and discharging processes
As shown in fig. 5, the exhaust switch is closed, and the switches between the feed pipe 16, the communicating pipe 4 and the top-return liquid storage tank 13 are closed, specifically, 6 pipe switches 15 are inserted into the elbow 14, the discharge pipe switch 6 is opened, fermentation raw materials are added from the feed pipe 16, and meanwhile, waste such as biogas residues which have been fermented enter from the bottom of the communicating pipe 4, overflow upwards to the communicating pipe 4 part located in the top-return liquid storage tank 13 and overflow automatically from the discharge pipe 7, wherein the discharge pipe 7 is communicated with the communicating pipe 4, and the communicating pipe 4 and the discharge pipe 7 are used for discharging together.
3. Gas production extreme process
As shown in fig. 6, as the anaerobic fermentation process in the fermentation chamber 3 proceeds, the amount of biogas generated increases, when the gas storage chamber 10 is full of biogas and the pressure reaches a certain value, the biogas pushes the biogas slurry in the fermentation chamber 3 into the top-return liquid storage tank 13 until the liquid level 18 of the fermentation chamber is lowered until the bottom of the cylinder 20 of the manhole 5 is exposed to the liquid level, the regenerated biogas overflows through the manhole 5 and enters the atmosphere, and at this time, the biogas pressure value reaches the maximum value, the liquid level in the fermentation chamber does not drop any further, and the pressure is maintained stable.
Therefore, when the amount of the generated biogas is small, the pressure value of the biogas is small, the pressure in the gas storage chamber 10 is insufficient to push the biogas slurry in the fermentation chamber 3 to the top return liquid storage tank 13, and the generated biogas is stored in the gas storage chamber 10; when the liquid level in the fermentation chamber 3 is pushed to the bottom of the cylinder 20 of the manhole 5 by the pressure in the gas storage chamber 10 along with the gradual increase of the biogas yield, on one hand, the formed water flow stirs the fermentation chamber 3 to promote fermentation and gas production, and on the other hand, the vent valve 6 on the vent pipe 7 is opened, biogas is discharged from the vent pipe 7 for use by gas equipment, along with the gradual increase of the generation speed and the generation amount of the biogas, the pressure is also gradually increased, the biogas slurry in the fermentation chamber 3 is continuously pushed to flow into the top return liquid storage tank 13, when the inner surface in the fermentation chamber 3 is below the bottom of the cylinder 20 of the manhole 5, the generated redundant gas is discharged from the cylinder 20 of the manhole 5, and the liquid level is stopped to be lowered at the moment, and the pressure is stopped to be raised continuously.
The omnibearing dynamic anaerobic fermentation tank provided by the invention can dynamically perform omnibearing water flow impact stirring on biogas slurry and sludge in the fermentation tank body 1 every day to form omnibearing dynamic in the fermentation tank body 1, thereby being capable of promoting the fermentation process and being beneficial to improving the gas production efficiency. Compared with the traditional fermentation device, the invention does not need to install a stirring system, but utilizes 6 water flows or 1 water flow formed by the feed pipe 16 and the communicating pipe 4 to stir the biogas slurry in the fermentation chamber 3 from bottom to top, and impacts the sludge, thereby reducing energy consumption. Install inlet pipe 16, communicating pipe 4 on the fermentation cylinder body 1 inner wall, fermentation cylinder body 1 is cylindrical, also sets up manhole 5 in fermentation cylinder body 1, makes inlet pipe 16, communicating pipe 4, the cylindrical overall structure of fermentation cylinder body 1 three component complete formation integral type, has realized the structure integration, and the atress is better, and the life-span is longer.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any other corresponding changes and modifications made in accordance with the technical idea of the present invention shall be included in the scope of the claims of the present invention.
Claims (7)
1. The omnibearing dynamic anaerobic fermentation tank is characterized by comprising a fermentation tank body, a fermentation chamber, a gas storage chamber, a top return liquid storage tank, a feed pipe, a communicating pipe, an exhaust pipe, a discharge pipe and a manhole;
The fermentation tank body is cylindrical, a top cover is arranged at the top of the fermentation tank body, a tank top is arranged in the fermentation tank body, the top return liquid storage tank is arranged above the tank top, the fermentation chamber is arranged below the tank top, and the space between the liquid level in the fermentation chamber and the tank top is the gas storage chamber;
The feeding pipe and the communicating pipe are arranged on the inner wall of the fermentation tank body, the bottoms of the feeding pipe and the communicating pipe are communicated with the fermentation chamber, and the parts of the feeding pipe and the communicating pipe above the top of the tank are communicated with the top return liquid storage tank through a switch;
the exhaust pipe is arranged at the top of the pool top, communicated with the air storage chamber and extends out from the top cover, and an exhaust valve is further arranged on the exhaust pipe;
the discharging pipe is arranged on the outer side wall of the fermentation tank body and is communicated with the communicating pipe in the top return liquid storage tank;
the manhole comprises a barrel which is arranged on the top of the pool and extends downwards, the edge of the top of the barrel is connected with the top of the pool in a sealing way, and the top end and the bottom end of the barrel are both provided with openings;
The parts of the feeding pipe and the communicating pipe above the tank top are connected with elbows, and the elbows are respectively communicated with the feeding pipe and the top return liquid storage tank and the communicating pipe and the top return liquid storage tank;
the elbow is a right-angle elbow, one end of the right-angle elbow is connected with the feeding pipe or the communicating pipe, and the opening at the other end of the right-angle elbow is upwards communicated with the top return liquid storage tank;
The pipe type switch is matched with the elbow, and the diameter of the outer wall of the pipe type switch is the same as that of the inner wall of the elbow.
2. The fermenter according to claim 1, wherein the roof is arched and the exhaust pipe is arranged in the center of the roof.
3. The fermenter according to claim 2, wherein the roof is an arched reinforced concrete layer.
4. The fermenter according to claim 1, wherein the communicating pipe is provided in plurality, and the plurality of communicating pipes and the feed pipe are uniformly arranged along a circumferential direction of an inner wall of the cylindrical fermenter.
5. The fermenter according to claim 4, wherein the bend is arranged at the bottom of the top return liquid reservoir.
6. The fermenter according to claim 1, wherein the distance between the bottom of the feed pipe and the communication pipe and the bottom of the fermenter body is set to 0.3 meters.
7. The fermenter according to claim 1, further comprising a ladder disposed on an inner wall of the fermenter, the manhole further comprising a first perforation and a second perforation on a roof and a first cover and a second cover respectively cooperating with the first perforation and the second perforation, the first perforation aligned with the second perforation, the barrel adjacent to the second perforation, the ladder passing through the first perforation and the second perforation and extending to a bottom of the fermenter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890042.XA CN110551616B (en) | 2019-09-19 | 2019-09-19 | Omnibearing dynamic anaerobic fermentation tank |
Applications Claiming Priority (1)
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