CN110656028A - Dry anaerobic fermentation gas-liquid stirring device - Google Patents
Dry anaerobic fermentation gas-liquid stirring device Download PDFInfo
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- CN110656028A CN110656028A CN201910900913.1A CN201910900913A CN110656028A CN 110656028 A CN110656028 A CN 110656028A CN 201910900913 A CN201910900913 A CN 201910900913A CN 110656028 A CN110656028 A CN 110656028A
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- 239000007788 liquid Substances 0.000 title claims abstract description 58
- 238000000855 fermentation Methods 0.000 title claims abstract description 35
- 238000003756 stirring Methods 0.000 title claims abstract description 24
- 238000010992 reflux Methods 0.000 claims description 27
- 238000005520 cutting process Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 abstract description 28
- 230000000694 effects Effects 0.000 abstract description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000004151 fermentation Effects 0.000 description 19
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000003911 water pollution Methods 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
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/02—Stirrer or mobile mixing elements
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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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- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Genetics & Genomics (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Sustainable Development (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a dry anaerobic fermentation gas-liquid stirring device which comprises a tank body and a gas circulating device, wherein the gas circulating device comprises a gas pump, a gas backflow main pipe, a plurality of gas backflow branch pipes and a first one-way valve, the top of the tank body is provided with a gas outlet, the bottom of the tank body is provided with a plurality of gas backflow holes, one end of the gas backflow main pipe is communicated with the gas outlet through the gas pump, the other end of the gas backflow main pipe is respectively communicated with one end of the plurality of gas backflow branch pipes, and the other end of each gas backflow branch pipe is respectively communicated with one gas backflow hole through one first one-way valve. According to the invention, the fermented materials are driven to flow by the upward floating of the methane from the bottom of the tank body, so that the effect of stirring the materials is achieved, and the restriction problem of the transmission stirring shaft is effectively solved.
Description
Technical Field
The invention relates to a dry anaerobic fermentation gas-liquid stirring device.
Background
With the continuous attention of China on energy, in recent years, the technology of producing biogas by fermentation is greatly developed and is divided into wet fermentation and dry fermentation according to the different dry matter content of raw materials. In general, the dry matter content of wet fermentation is below 8-12%, whereas dry fermentation can reach above 20%. Wet fermentation is widely applied, stirring is well realized, gas production is stable, and the development of the wet fermentation is restricted by the factors of much produced biogas slurry, difficult treatment, easy water pollution and the like. Compared with wet fermentation, dry fermentation technology has the advantages of less water consumption, less secondary pollution, low energy consumption, low initial investment and the like, so that the dry fermentation technology becomes a hot spot of domestic and foreign research in recent years. For some waste materials, such as household garbage, urban dewatered sludge, straws and the like, the water content of the waste materials is low, and the dry fermentation technology is more favorable. However, the development of dry fermentation technology is limited by the stirring mode because the dry matter content of dry fermentation is too high and the fluidity is poor, and the traditional stirring device is limited in use.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a dry anaerobic fermentation gas-liquid stirring device of the dry anaerobic fermentation gas-liquid stirring device.
The utility model provides a dry-type anaerobic fermentation gas-liquid agitating unit, includes a jar body, still includes gas circulation device, and gas circulation device includes that air pump, gas backflow are responsible for, a plurality of gas backflow branch pipe and first check valve, the top of jar body is provided with the gas outlet, the bottom of jar body is provided with a plurality of gas backflow holes, the one end that gas backflow is responsible for is passed through the air pump intercommunication the gas outlet, the other end that gas backflow is responsible for feeds through a plurality ofly respectively the one end of gas backflow branch pipe, the other end of every gas backflow branch pipe is respectively through one gas backflow hole of first check valve intercommunication.
Based on the above, still include multiunit liquid circulation device, every group liquid circulation device includes that liquid reflux is responsible for, liquid reflux branch pipe, second check valve and circulation cutting pump, the one end setting that liquid reflux is responsible for is on the internal upper portion of jar, the other end that liquid reflux is responsible for wears to establish the external setting of jar, the lower part of the jar body is provided with a plurality of liquid reflux holes, the other end that liquid reflux is responsible for communicates a plurality ofly respectively the one end of liquid reflux branch pipe, the other end of every liquid reflux branch pipe communicates a liquid reflux hole through second check valve and circulation cutting pump respectively.
Based on the above, the liquid backflow holes are distributed on a plurality of heights of the tank body.
Based on the above, gas circulation device includes the multiunit, and multiunit gas circulation device's gas reflux hole equipartition is in jar body bottom.
Based on the above, the top of the tank body is also provided with a gas collecting pipe communicated with the inside of the tank body, the gas collecting pipe is provided with a third one-way valve, and the tank body is internally provided with a pressure sensor.
The invention has outstanding substantive characteristics and obvious progress, and particularly, the invention pumps the biogas in the biogas area at the upper part of the tank to the bottom of the tank body for backflow circulation, and the gas which flows back to the bottom of the tank floats upwards to drive the material in the tank to flow, thereby achieving the stirring effect and solving the problem that the traditional mechanical stirring mechanism is restricted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a tank body; 2. an air pump; 3. a gas return main pipe; 4. a gas return manifold; 5. a first check valve; 6. a circulating cutting pump; 7. a liquid return manifold; 8. a second one-way valve; 9. a liquid return main pipe; 10. a gas collecting pipe; 11. a third check valve; 12. a pressure sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, a dry anaerobic fermentation gas-liquid stirring device comprises a tank body 1 and a gas circulation device, wherein the gas circulation device comprises a gas pump 2, a gas backflow main pipe 3, a plurality of gas backflow branch pipes 4 and a first one-way valve 5, a gas outlet is arranged at the top of the tank body 1, a plurality of gas backflow holes are arranged at the bottom of the tank body 1, one end of the gas backflow main pipe 3 is communicated with the gas outlet through the gas pump 2, the other end of the gas backflow main pipe 3 is communicated with one end of each of the gas backflow branch pipes 4, and the other end of each of the gas backflow branch pipes 4 is communicated with one of the gas backflow holes through the first one-way valve 5.
The upper part in the tank body 1 is a biogas area, the lower part is a material area of fermentation products, the air pump 2 works to convey biogas in the biogas area to the bottom of the tank body 1 through the main gas backflow pipe 3 and the plurality of gas backflow branch pipes 4, and the biogas is circulated to the biogas area from the bottom of the material area. In the process that the gas floats upwards in the material area, the material is driven to flow, and the material stirring effect is achieved. The first check valve prevents the material in the material area from entering the gas return branch 4 and causing the gas return branch 4 to be blocked. In fact, gas circulation device includes the multiunit, and multiunit gas circulation device's gas reflux hole equipartition is in jar 1 bottom, and the gas of the gas reflux hole backward flow of equipartition carries out even stirring effect to the material in material district.
Preferably, this dry-type anaerobic fermentation gas-liquid agitating unit still includes multiunit liquid circulating device, and every group liquid circulating device includes that liquid backward flow is responsible for 9, liquid backward flow branch pipe 7, second check valve 8 and circulation cutting pump 6, the one end setting of liquid backward flow is responsible for 9 is on the upper portion in jar body 1, the other end of liquid backward flow is responsible for 9 and is worn out jar body 1 and set up outward, the lower part of jar body 1 is provided with a plurality of liquid backward flow holes, the other end of liquid backward flow is responsible for 9 and communicates a plurality ofly respectively the one end of liquid backward flow branch pipe 7, and the other end of every liquid backward flow branch pipe 7 communicates a liquid backward flow hole through second check valve 8 and circulation cutting pump 6 respectively. The circulating cutting pump 6 pumps the fermentation liquor in the material area into the biogas area through the return pipeline and sprays the fermentation liquor into the material area, and the fermentation liquor sinks from the upper part of the material area and circulates from the bottom to the top to drive the material in the material area to flow, so that the effect of stirring the material is achieved. Meanwhile, the circulating cutting pump 6 enables the fermentation liquor to fluctuate when the materials at the lower part are circulated upwards, the gas rising speed in the gas stirring process is improved, the stirring effect is improved, and the materials can be fully fermented in the tank body 1.
In this embodiment, the liquid backflow holes are distributed at a plurality of heights of the tank body 1, that is, the liquid backflow holes are distributed at different heights of the tank body 1, so as to improve the strength and uniformity of liquid circulation. In fact, the one end of liquid backward flow person in charge 9 is provided with a plurality of liquid outlets, forms the effect of spraying to a plurality of regions at material district top, plays certain oscillation to the material at material district top and stirs the effect, and plays certain even contact effect to the fermentation.
In practice, the top of the tank body 1 is further provided with a gas collecting pipe communicated with the inside of the tank body 1, the gas collecting pipe is provided with a third one-way valve 11, and the tank body 1 is internally provided with a pressure sensor 12. Still be provided with inlet pipe and discharging pipe on jar body 1, during actual operation, the material gets into jar body 1 from the inlet pipe and carries out anaerobic fermentation, the material is located the material district, close first check valve 5, second check valve 8 and third check valve 11, open circulation cutting pump 6 and second check valve 8, the marsh gas accumulation in the anaerobic fermentation jar is made through the liquid circulation stirring, when accumulating to a certain degree, that is when the pressure value that pressure sensor 12 detected surpasss a certain threshold value, open air pump 2 and first check valve 5, through the gas backflow circulation with marsh gas backward flow to jar body 1 material district bottom, under the effect of marsh gas circulation, the material in jar body 1 is further stirred. In practice, when the pressure in the tank exceeds another threshold, the air pump 2, the first one-way valve 5, the circulation cutting pump 6 and the second one-way valve 8 are closed, the third one-way valve 11 is opened, the air is exhausted through the air collecting pipe, the air is conveyed into the storage tank for storage, and when the pressure in the tank is lower than the other threshold, the third one-way valve 11 is closed, and the air circulation and the liquid circulation are started.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a dry-type anaerobic fermentation gas-liquid agitating unit, includes the jar body, its characterized in that: still include gas circulation device, gas circulation device includes that air pump, gas backflow are responsible for, a plurality of gas reflux branch pipe and first check valve, the top of the jar body is provided with the gas outlet, the bottom of the jar body is provided with a plurality of gas reflux holes, the one end that gas backflow is responsible for is passed through the air pump intercommunication the gas outlet, the other end that gas backflow is responsible for communicates a plurality ofly respectively the one end of gas reflux branch pipe, the other end of every gas reflux branch pipe is respectively through one gas reflux hole of first check valve intercommunication.
2. The dry anaerobic fermentation gas-liquid stirring device according to claim 1, wherein: still include multiunit liquid circulation device, every group liquid circulation device includes that liquid reflux is responsible for, liquid reflux branch pipe, second check valve and circulation cutting pump, the one end setting that liquid reflux is responsible for is on the internal upper portion of jar, the other end that liquid reflux is responsible for wears to establish the external setting of jar, the lower part of the jar body is provided with a plurality of liquid reflux holes, the other end that liquid reflux is responsible for communicates respectively a plurality ofly the one end of liquid reflux branch pipe, the other end of every liquid reflux branch pipe communicates a liquid reflux hole through second check valve and circulation cutting pump respectively.
3. The dry anaerobic fermentation gas-liquid stirring device according to claim 2, wherein: the liquid backflow holes are distributed on a plurality of heights of the tank body.
4. The dry anaerobic fermentation gas-liquid stirring device according to claim 1, wherein: the gas circulation device comprises a plurality of groups, and gas reflux holes of the gas circulation devices are uniformly distributed at the bottom of the tank body.
5. The dry anaerobic fermentation gas-liquid stirring device according to claim 1, wherein: the top of the tank body is also provided with a gas collecting pipe communicated with the inside of the tank body, the gas collecting pipe is provided with a third one-way valve, and the tank body is internally provided with a pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910900913.1A CN110656028A (en) | 2019-09-23 | 2019-09-23 | Dry anaerobic fermentation gas-liquid stirring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910900913.1A CN110656028A (en) | 2019-09-23 | 2019-09-23 | Dry anaerobic fermentation gas-liquid stirring device |
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| Publication Number | Publication Date |
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| CN110656028A true CN110656028A (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910900913.1A Pending CN110656028A (en) | 2019-09-23 | 2019-09-23 | Dry anaerobic fermentation gas-liquid stirring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112481106A (en) * | 2020-12-02 | 2021-03-12 | 通化县东明农牧业发展(集团)有限公司 | Straw anaerobic digester material mixing system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106190788A (en) * | 2015-05-29 | 2016-12-07 | 云南师范大学 | The stirring of follow-on anaeroic digestor biogas slurry and broken shell circulation line |
| CN107828649A (en) * | 2017-11-07 | 2018-03-23 | 武汉和信益科技有限公司 | Large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system and its process |
| CN108676712A (en) * | 2018-08-07 | 2018-10-19 | 上海环境工程设计研究院有限公司 | A kind of anaerobic fermentation gas stirring device |
| WO2019148694A1 (en) * | 2018-02-05 | 2019-08-08 | 中国环境科学研究院 | Integrated two-phase anaerobic dry fermentation reactor based on biomimetic rumen principle |
-
2019
- 2019-09-23 CN CN201910900913.1A patent/CN110656028A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106190788A (en) * | 2015-05-29 | 2016-12-07 | 云南师范大学 | The stirring of follow-on anaeroic digestor biogas slurry and broken shell circulation line |
| CN107828649A (en) * | 2017-11-07 | 2018-03-23 | 武汉和信益科技有限公司 | Large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system and its process |
| WO2019148694A1 (en) * | 2018-02-05 | 2019-08-08 | 中国环境科学研究院 | Integrated two-phase anaerobic dry fermentation reactor based on biomimetic rumen principle |
| CN108676712A (en) * | 2018-08-07 | 2018-10-19 | 上海环境工程设计研究院有限公司 | A kind of anaerobic fermentation gas stirring device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112481106A (en) * | 2020-12-02 | 2021-03-12 | 通化县东明农牧业发展(集团)有限公司 | Straw anaerobic digester material mixing system |
| CN112481106B (en) * | 2020-12-02 | 2021-07-30 | 通化县东明农牧业发展(集团)有限公司 | Straw anaerobic digester material mixing system |
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