CN215975773U - Multiple fermentation tank combined methane tank with double star belt overflow tank - Google Patents
Multiple fermentation tank combined methane tank with double star belt overflow tank Download PDFInfo
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- CN215975773U CN215975773U CN202120839627.1U CN202120839627U CN215975773U CN 215975773 U CN215975773 U CN 215975773U CN 202120839627 U CN202120839627 U CN 202120839627U CN 215975773 U CN215975773 U CN 215975773U
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- Prior art keywords
- tank
- fermentation
- methane
- overflow
- slag
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 238000000855 fermentation Methods 0.000 title claims abstract description 60
- 230000004151 fermentation Effects 0.000 title claims abstract description 59
- 239000002893 slag Substances 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000007599 discharging Methods 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000011010 flushing procedure Methods 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims description 10
- 238000004062 sedimentation Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000010802 sludge Substances 0.000 abstract description 5
- 238000003756 stirring Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 239000002028 Biomass Substances 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000004177 carbon cycle Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
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- 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
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- Treatment Of Sludge (AREA)
Abstract
A plurality of fermentation tank combined methane tanks with double star overflow tanks belong to the technical field of methane production equipment; is a basic core technology for transformation and upgrading of the biogas industry. Solves the problems of difficult slag discharge, material change and gas cut-off, difficult slag water stirring and less gas storage in the existing methane tank. The key points of the technical scheme for solving the problems are as follows: 1. each fermentation tank is a long-strip square cylinder with proper width, slag water flows in a fixed channel with gradient during slag discharging, and the functions of heating and flushing a sludge pipe thoroughly solve the problems of difficult slag discharging and difficult slag water stirring; 2. the fermentation tanks are staggered for material change at regular intervals, so that continuous gas change and stable gas production are realized; 3. the overflow tank is used for accommodating biogas water overflowing due to the storage of a large amount of biogas in the fermentation tank; 4. the problem of arbitrarily large volume of the single methane tank is solved by increasing the number and the length of the fermentation tanks, and the larger the tank volume is, the lower the relative operation and construction cost is; 5. the whole pool body is buried underground at a proper depth, occupies less land, is beneficial to heat preservation, is more concealed and prolongs the service life.
Description
Technical Field
A plurality of fermentation tank combined methane tanks with double-star overflow tanks (hereinafter referred to as double-star methane tanks) belong to the technical field of methane production equipment and are the core technology of transformation and upgrading of the methane industry.
Background
Raw materials for producing the biogas are biomass and derivatives thereof, about 2000 million tons of dry biomass are produced globally every year, and about 50 million tons of dry biomass are produced in China every year, which is inexhaustible. The production and consumption of the biogas belong to the carbon cycle process in the earth nature, and are in the carbon zero emission range. The vigorous development of the biogas industry is a fundamental road for solving the self-sufficiency of the gas energy in China, ensuring the strategic safety of the gas energy and realizing the carbon neutralization of the gas energy.
At present, most of methane tanks used in China are of a cavity and big belly type, and have various defects. (1) The size of the tank volume is difficult to change materials and the operation cost is high, so that the methane industry is not good at the aspect. The larger the tank volume is, the larger the refueling difficulty is, and the higher the running cost is. Therefore, the tank capacity is generally small, and large-scale operation is difficult to realize. (2) Gas is cut off when the materials are changed. (3) Less methane is stored in the methane tank. (4) The large and medium-sized methane tank is built on the ground, occupies a large area, is exposed too much, is not beneficial to heat preservation of slag and water in the methane tank, and influences the service life of the methane tank due to wind, sunshine and rain.
The double-star methane tank overcomes the defects of the prior methane tank, the tank capacity can be arbitrarily large, and the larger the tank capacity is, the more outstanding the superiority is. Opens up a feasible way for transformation, upgrade and large development of the biogas industry and provides a basic core technology support.
Disclosure of Invention
The main body structure of the double-star methane tank is a water and gas leakage prevention reinforced concrete structure and is buried at a proper depth underground.
One-double star methane tank structure
1. The double-star methane tank is a flat cuboid or a cube with the middle bottom and the flat bottom and the two upward-inclined ends, a slag discharging groove, two methane output pipes, an overflow tank water pumping pipe and a plurality of feeding pipes are arranged in the middle of the top of the double-star methane tank, and the double-star methane tank is shown in figure 1.
2. The internal structure of the double-star methane tank (shown in figures 2 and 3). The upper part of the double-star methane tank is provided with two overflow tanks which are separated and symmetrical by the slag discharging groove and are communicated with each other, two fermentation tank combination bodies which are separated and symmetrical by the slag discharging groove are arranged below the overflow tanks, each combination body is internally provided with a plurality of partition walls with methane communication holes at the upper part, and the separation walls are arranged from the outer end surface to the slag discharging groove wall and are divided into a plurality of bottom surfaces which are completely the same in shape and have slopes, and the straight strip square barrel type fermentation tank with proper width becomes a slag water flowing fixed channel: the inner end of each fermentation pool is provided with a slag hole with a real gate and a mesh gate at the lower part of a slag groove wall, the outer end of each fermentation pool is provided with a sedimentation pool, the wall of the sedimentation pool is 1/2 higher than the fermentation pool at the position, a feeding pipe extends downwards to 1/2 of the depth of the sedimentation pool, the lower part of a section of the feeding pipe passing through the overflow pool is provided with an overflow hole with a filter screen and a real gate, the central line of the bottom of each fermentation pool is provided with a slag water heating and silt flushing pipe with a plurality of self-sealing nozzles, and the pipe is guided to the ground from the slag groove.
(II) double-star methane tank operation process
1. The initial charging process: each fermentation tank is charged separately. Before charging, closing the solid gate of the slag outlet of other fermentation tanks, opening the solid gate of the slag outlet of the fermentation tank, closing the network gate, opening the solid gate of the overflow port, starting charging, continuously charging prepared materials into the feeding pipe, and continuously filling the feeding pipe with prepared biogas water. The flushing material enters a fermentation tank, and a hard weight in the material sinks to the bottom of the sedimentation tank so as to prevent the slag discharge pump from being damaged during slag discharge until the material is completely loaded. If the fermentation tank is filled with water and the materials are not completely filled, a slag outlet pump in the slag outlet groove is started to pump the biogas water into a material inlet pipe to continuously fill the materials and flush the materials into the fermentation tank until the materials are completely filled, and the pump is stopped to finish the initial filling process.
And (3) finishing the primary charging process of all the fermentation tanks according to the same process, continuously filling water into the fermentation tanks after the last fermentation tank finishes charging, stopping filling water after the overflow tank has water with proper depth, closing all the net gates and opening all the solid gates (including the overflow ports). The double-star methane tank completes the whole process of primary charging.
2. A gas production process: after the initial charging is finished, anaerobic fermentation is started to produce biogas in each fermentation tank, the biogas rises to the upper part of the fermentation tank and is output out of the tank from a biogas output pipe through a biogas communication hole; if the gas production is greater than the output, part of the methane can be reserved at the upper part of each fermentation tank, the methane occupies space, methane water is pressed, the methane water flows into the overflow tank from the overflow port of the feeding pipe, and the water level in the overflow tank is higher when more methane is reserved in the tank; in order to improve the gas production rate of the double-star methane tank, when medium-temperature or high-temperature fermentation is adopted, a water pump of an overflow tank is started, water in the overflow tank is pumped into a heating pipe of a solar heat collecting tank or a geothermal heat exchanger for heating, hot water flows into the fermentation tank to be heated and is sprayed out from a plurality of self-sealing spray heads, so that slag water is stirred and heated, the slag water stirring effect is realized, the water level in the fermentation tank can rise and flow back into the overflow tank through a water overflow port of a feeding pipe, and the heating and stirring processes of the methane water in the tank are completed through circulation. After the fermentation tank finishes the heating standard, heating each fermentation tank in turn.
3. And (3) material changing process: the daily gas production of each fermentation tank is changed from less to more from charging to slag discharging, and then from more to less after the daily gas production is the most, the material is changed when the daily gas production is very low, and the material change of all the fermentation tanks of the double-star methane tank is carried out independently and in a staggered mode at regular time, so that the daily gas production of the double-star methane tank is relatively stable.
(1) The process of changing materials and discharging residues: firstly, opening a solid lock of a residue outlet of the reloading fermentation tank and a network lock, closing a solid lock of an overflow outlet, and closing all other solid locks of the fermentation tank. Opening a slag outlet pump in the slag discharging groove, wherein the bottom of the fermentation tank has a certain gradient from the sedimentation tank to the slag discharging hole, so that a slag-water mixture can flow into the slag discharging groove from the slag discharging hole and be pumped out by the slag discharging pump, and through slag-water separation, the biogas residue is high-quality organic fertilizer, the biogas water is recharged into a feeding pipe to flush the biogas residue to the slag discharging groove and is pumped out by the slag discharging pump until the biogas residue is completely pumped out, if the biogas residue is not completely pumped out at the bottom of the fermentation tank, opening a heating sludge flushing pump and flushing sludge by high-pressure water sprayed out by a self-sealing nozzle on a heating sludge flushing pipe until the biogas residue is completely pumped out, and closing the heating sludge flushing pump and the slag discharging pump.
(2) The process of material changing and loading: firstly closing the mesh gate of the slag outlet of the fermentation tank, then starting charging to the feeding pipe, starting the slag outlet pump, pumping the biogas water flowing into the slag outlet tank back to the feeding pipe to flush the biogas water into the fermentation tank, wherein the process is the same as the initial charging process.
In the process of material changing, as part of biogas water runs outside the fermentation tank, the water level in the fermentation tank is possibly lower than the lower opening of the feeding pipe, and because of water seal in the sedimentation tank, biogas can not flow out of the feeding pipe.
Drawings
Name of the drawing
FIG. 1 is a perspective view showing the appearance of a combined methane tank with a plurality of fermentation tanks and a double-star overflow tank
FIG. 2 is a sectional view A-A of a plurality of fermentation tanks combined methane tank with double-star overflow tanks
FIG. 3 is a B-B cross sectional view of a combined methane tank with a plurality of fermentation tanks and a double-star overflow tank
Description of the drawings
Slag notch, material feeding pipe, overflow pond water pumping pipe, marsh gas outputting pipe, double star marsh gas pond top, double star marsh gas pond side wall, double star marsh gas pond end wall, double star marsh gas pond bottom, overflow pond, water collecting hole, ⑪ overflow port, ⑫ fermenting pond combination, ⑬ depositing pond wall, ⑭ fermenting pond slag notch, ⑮ fermenting pond partition wall and ⑯ slag notch wall.
Detailed Description
The preferred embodiment of the combined methane tank with the double-star methane tank and the overflow tank is that the main body of the double-star methane tank is of a reinforced concrete structure which prevents water and gas leakage and is buried at a proper depth underground, the appearance (shown in figure 1) of the combined methane tank is a flat cuboid or a cube with a low flat middle bottom surface and two upward inclined ends, the middle top part of the combined methane tank is provided with a slag notch, two methane output pipes, an overflow tank pump water pipe, a feed pipe of each fermentation tank and an internal structure (shown in figures 2 and 3); the upper part is two overflow tanks which are separated by a slag discharging groove and are communicated with each other at the bottom, the lower part of each feeding pipe passing through the overflow tank section is provided with an overflow port with a filter screen and a solid gate, the lower part of the overflow tank is provided with a plurality of fermentation tank assemblies separated by the slag discharging groove, each assembly is divided into forming bodies by a plurality of partition walls with methane communication holes at the upper part, the bottoms of the forming bodies are provided with slopes, the straight strip square tubular fermentation tanks with proper width are provided with slag water flowing fixed channels, the inner end of each fermentation tank is provided with a slag discharging hole with a mesh gate and a solid gate at the bottom of the slag discharging groove wall, the outer end of each fermentation tank is provided with a precipitation tank with a wall with a height of 1/2 about the height in the fermentation tank, the feeding pipe extends to the depth of 1/2 of the precipitation tank, the central line of the bottom of each fermentation tank is provided with a slag water heating and silt flushing pipe with a plurality of self-sealing nozzles, and the pipe is led to the ground from the slag discharging groove.
Claims (1)
1. A plurality of fermentation vat combination methane-generating pits of two stars area overflow pond, its characterized in that: the shape is a flat cuboid or a cube with a low flat bottom surface and two upward inclined ends; the top surface is provided with a slag discharging groove, two methane output pipes, an overflow tank water pumping pipe and a feeding pipe of each fermentation tank; the upper part of the double-star methane tank is provided with two symmetrical and communicated overflow tanks separated by a slag discharging groove, the lower part of the feeding pipe passing through the overflow tank section is provided with an overflow port with a filter screen and a solid gate, the lower part of the overflow tank is provided with two symmetrical fermentation tank combination bodies separated by the slag discharging groove, and the combination bodies are divided into a plurality of long-strip square and simple fermentation tanks with the same shape, slopes and proper widths by a plurality of partition walls with methane communication holes at the upper parts from the end surface to the wall of the slag discharging groove; the inner end of each fermentation pool is provided with a slag hole with a net gate and a real gate at the lower part of a slag groove wall, the outer end is provided with a sedimentation pool, the height of the sedimentation pool wall is 1/2 of the fermentation pool, a feeding pipe extends into 1/2 of the depth in the sedimentation pool, the central line of the bottom surface of each fermentation pool is provided with a heating silt flushing pipe with a plurality of self-sealing nozzles, the pipe is led to the ground from the slag groove, and a plurality of fermentation pool combined methane pool bodies with double stars and overflow pools have a water-tight and air-tight reinforced concrete structure and are buried at a proper depth underground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120839627.1U CN215975773U (en) | 2021-04-23 | 2021-04-23 | Multiple fermentation tank combined methane tank with double star belt overflow tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120839627.1U CN215975773U (en) | 2021-04-23 | 2021-04-23 | Multiple fermentation tank combined methane tank with double star belt overflow tank |
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| Publication Number | Publication Date |
|---|---|
| CN215975773U true CN215975773U (en) | 2022-03-08 |
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| CN202120839627.1U Expired - Fee Related CN215975773U (en) | 2021-04-23 | 2021-04-23 | Multiple fermentation tank combined methane tank with double star belt overflow tank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112940913A (en) * | 2021-04-23 | 2021-06-11 | 王进洋 | Multiple fermentation tank combined methane tank with double star belt overflow tank |
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2021
- 2021-04-23 CN CN202120839627.1U patent/CN215975773U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112940913A (en) * | 2021-04-23 | 2021-06-11 | 王进洋 | Multiple fermentation tank combined methane tank with double star belt overflow tank |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220308 |
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| CF01 | Termination of patent right due to non-payment of annual fee |