CN108970326B - Fermentation tail gas centralized treatment device and application method thereof - Google Patents
Fermentation tail gas centralized treatment device and application method thereof Download PDFInfo
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- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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Abstract
The invention relates to a fermentation tail gas centralized treatment device and an application method thereof, belonging to the technical field of microbial fermentation. The fermentation tail gas centralized treatment device comprises at least two fermentation tanks, a gas collection main pipeline, a fan and a condensation absorption tank, wherein tail gas outlets of the fermentation tanks are respectively communicated with one end of the gas collection main pipeline through branch pipes, the other end of the gas collection main pipeline is communicated with the upper end of the condensation absorption tank, and the fan is arranged on the gas collection main pipeline; the condensation absorption tank is internally provided with a heat exchange tube, a cold water inlet of the heat exchange tube is arranged on the middle upper part of the outer side wall of the condensation absorption tank, a water outlet of the heat exchange tube is arranged on the middle lower part of the outer side wall of the condensation absorption tank, liquid water is filled in the condensation absorption tank, the gas collection main pipeline penetrates through the upper end of the condensation absorption tank and stretches into the liquid water bottom in the condensation absorption tank, and the upper end of the condensation absorption tank is provided with an air. The fermentation tail gas centralized treatment device has the advantages of simple exhaust pipeline, air pollution reduction and low emission cost.
Description
Technical Field
The invention relates to a fermentation tail gas centralized treatment device and an application method thereof, belonging to the technical field of microbial fermentation.
Background
In order to ensure that the microorganisms can be well grown and propagated, sufficient dissolved oxygen must be provided for the microorganisms, and a large amount of fermentation tail gas is inevitably generated in the microbial fermentation process, wherein the fermentation tail gas comprises gas which is not consumed by aeration and oxygen supply, waste gas generated by metabolism of the microorganisms, fermentation materials carried to a tail gas system and the like. However, the fermentation tail gas is difficult to treat due to the characteristics of large production amount, complex components, low relative concentration of pollutants and the like.
Most of fermentation tail gas treatment in the fermentation industry at present adopts a cyclone gas-liquid separation device, and an exhaust pipeline is led out from each tank body independently, so that the pipeline is complicated, the tail gas treatment is not thorough, the air pollution is caused, or the treatment cost is overhigh by adopting a tail gas absorption tower.
Disclosure of Invention
The invention aims to solve the technical problem of providing a tail gas centralized treatment device which is simple in exhaust pipeline, reduces air pollution and is low in emission cost and an application method thereof, aiming at the defects of the prior art.
The technical scheme provided by the invention for solving the technical problems is as follows: a fermentation tail gas centralized treatment device comprises at least two fermentation tanks, a gas collection main pipeline, a fan and a condensation absorption tank, wherein tail gas outlets of the fermentation tanks are respectively communicated with one end of the gas collection main pipeline through branch pipes, the other end of the gas collection main pipeline is communicated with the upper end of the condensation absorption tank, and the fan is arranged on the gas collection main pipeline; the condensation absorption tank is internally provided with a heat exchange tube, a cold water inlet of the heat exchange tube is arranged on the middle upper part of the outer side wall of the condensation absorption tank, a water outlet of the heat exchange tube is arranged on the middle lower part of the outer side wall of the condensation absorption tank, liquid water is filled in the condensation absorption tank, the gas collection main pipeline penetrates through the upper end of the condensation absorption tank and stretches into the liquid water bottom in the condensation absorption tank, and the upper end of the condensation absorption tank is provided with an air.
The improvement of the technical scheme is as follows: the branch pipes are respectively provided with a first diaphragm valve.
The improvement of the technical scheme is as follows: the liquid level of the liquid water in the condensation absorption tank is higher than that of the liquid water in the condensation absorption tank.
The improvement of the technical scheme is as follows: the fermentation cylinder is including a jar body, motor and stirring rake, and the stirring rake can be followed the rotatory vertical installation in jar body of self axis, and the motor is installed and is used for driving the stirring rake in jar body upper end.
The improvement of the technical scheme is as follows: the lower end of the tank body of the fermentation tank is provided with a second diaphragm valve.
The application method of the fermentation tail gas centralized treatment device is characterized in that: the method comprises the following steps:
(1) opening a cold water inlet and a cold water outlet of the heat exchange tube, and performing circulating heat exchange;
(2) starting a fan on the main gas collection pipeline;
(3) respectively opening first diaphragm valves on the branch pipes, and leading tail gas in the fermentation tank to enter a gas collection main pipeline through a fan;
(4) the gas collection main pipeline sends the tail gas to the bottom of liquid water in the condensation absorption tank;
(5) and (4) absorbing the tail gas by liquid water in the condensation absorption tank and then discharging the tail gas through an exhaust port to finish the concentrated treatment of the fermentation tail gas.
The invention adopts the technical scheme that the method has the beneficial effects that:
(1) the tail gas outlet of the fermentation tank in the fermentation tail gas centralized treatment device is respectively sent into the gas collection main pipeline through the branch pipes, and is intensively sent into the condensation absorption tank through the gas collection main pipeline for treatment, so that the fermentation engineering exhaust pipeline is simplified, compared with the most part of fermentation tail gas treatment in the current fermentation industry, the cyclone gas-liquid separation device is adopted to independently lead out the exhaust pipeline from each tank body, the exhaust pipeline is greatly reduced, the exhaust pipeline is reduced to 30-50% of the original exhaust pipeline, the management is convenient, and the pipeline cost is reduced;
(2) in the fermentation tail gas centralized treatment device, a fan is adopted on a gas collection main pipeline to drain so as to avoid that the exhaust gas of each fermentation tank is mutually communicated into the tank to cause bacteria contamination due to different tank pressures;
(3) according to the condensation absorption tank of the fermentation tail gas centralized treatment device, tail gas is cooled, liquefied and absorbed, the tail gas is treated simply and effectively, the fermentation tail gas emission is reduced, the air pollution is reduced, and the emission cost is reduced;
(4) the condensation absorption tank of the fermentation tail gas centralized treatment device is internally provided with the heat exchange tube, and the condensation absorption tank is effectively cooled by circulating cold water in the heat exchange tube, so that the tail gas cooling liquefaction and absorption efficiency of the condensation absorption tank is effectively improved.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a centralized fermentation tail gas treatment device according to an embodiment of the invention;
wherein: 1-tank body, 2-stirring paddle, 3-second diaphragm valve, 4-motor, 5-first diaphragm valve, 6-branch pipe, 7-fan, 8-gas collection main pipeline, 9-cold water inlet, 10-water outlet, 11-heat exchange pipe, 12-exhaust port, 13-liquid water and 14-condensation absorption tank.
Detailed Description
Examples
The fermentation tail gas centralized treatment device of the embodiment, as shown in fig. 1, includes two fermentation tanks, a gas collection main pipeline 8, a fan 7 and a condensation absorption tank 14, tail gas outlets of the two fermentation tanks are respectively communicated with one end of the gas collection main pipeline 8 through a branch pipe 6, the other end of the gas collection main pipeline 8 is communicated with the upper end of the condensation absorption tank 14, and the fan 7 is arranged on the gas collection main pipeline 8; a heat exchange tube 11 is installed in a condensation absorption tank 14, a cold water inlet 9 of the heat exchange tube 11 is arranged at the middle upper part of the outer side wall of the condensation absorption tank 14, a water outlet 10 of the heat exchange tube 11 is arranged at the middle lower part of the outer side wall of the condensation absorption tank 14, liquid water 13 is installed in the condensation absorption tank 14, a gas collection main pipeline 8 penetrates through the upper end of the condensation absorption tank 14 and stretches into the bottom of the liquid water 13 in the condensation absorption tank 14, and an exhaust port 12 is formed in the upper end of the condensation absorption tank 14.
The branch pipes 6 of the fermentation tail gas centralized treatment device of the embodiment are respectively provided with a first diaphragm valve 5. The liquid level of the liquid water 13 in the condensate absorption tank 14 passes through the heat exchange pipe 11. The fermentation cylinder is including jar body 1, motor 4 and stirring rake 2, and stirring rake 2 can be followed the rotatory vertical installation in jar body 1 of self axis, and motor 4 is installed and is used for driving stirring rake 2 in jar body 1 upper end. The lower end of the tank body 1 of the fermentation tank is provided with a second diaphragm valve 3.
The application method of the fermentation tail gas centralized treatment device comprises the following steps:
(1) opening a cold water inlet 9 and a cold water outlet 10 of a heat exchange tube 11 to perform circulating heat exchange;
(2) starting a fan 7 on a main gas collection pipeline 8;
(3) respectively opening the first diaphragm valves 5 on the branch pipes 6, and leading tail gas in the fermentation tank to enter a gas collection main pipeline 8 through a fan 7;
(4) the gas collection main pipeline 8 sends the tail gas to the bottom of liquid water 13 in a condensation absorption tank 14;
(5) the tail gas is absorbed by liquid water 13 in a condensation absorption tank 14 and then discharged through an exhaust port 12, and the concentrated treatment of the fermentation tail gas is completed.
The fermentation tank can be a plurality of fermentation tanks, and the plurality of fermentation tanks are communicated with the gas collection main pipeline 8 through the branch pipes 6 in the same way.
The tail gas outlet of the fermentation tank in the fermentation tail gas centralized treatment device is respectively sent into the gas collection main pipeline through the branch pipes, and is intensively sent into the condensation absorption tank through the gas collection main pipeline for treatment, so that the fermentation engineering exhaust pipeline is simplified, compared with the most part of fermentation tail gas treatment in the current fermentation industry, the cyclone gas-liquid separation device is adopted to independently lead out the exhaust pipeline from each tank body, the exhaust pipeline is greatly reduced, the exhaust pipeline is reduced to 30-50% of the original exhaust pipeline, the management is convenient, and the pipeline cost is reduced; in the fermentation tail gas centralized treatment device, a fan is adopted on a gas collection main pipeline to drain so as to avoid that the exhaust gas of each fermentation tank is mutually communicated into the tank to cause bacteria contamination due to different tank pressures; according to the condensation absorption tank of the fermentation tail gas centralized treatment device, tail gas is cooled, liquefied and absorbed, the tail gas is treated simply and effectively, the fermentation tail gas emission is reduced, the air pollution is reduced, and the emission cost is reduced; the condensation absorption tank of the fermentation tail gas centralized treatment device is internally provided with the heat exchange tube, and the condensation absorption tank is effectively cooled by circulating cold water in the heat exchange tube, so that the tail gas cooling liquefaction and absorption efficiency of the condensation absorption tank is effectively improved.
The present invention is not limited to the above-described embodiments. All technical solutions formed by equivalent substitutions fall within the protection scope of the claims of the present invention.
Claims (6)
1. The utility model provides a fermentation tail gas centralized processing device which characterized in that: the fermentation tank tail gas outlet is respectively communicated with one end of the gas collection main pipeline through a branch pipe, the other end of the gas collection main pipeline is communicated with the upper end of the condensation absorption tank, and the fan is arranged on the gas collection main pipeline; the condensation absorption tank is internally provided with a heat exchange tube, a cold water inlet of the heat exchange tube is arranged at the middle upper part of the outer side wall of the condensation absorption tank, a water outlet of the heat exchange tube is arranged at the middle lower part of the outer side wall of the condensation absorption tank, liquid water is filled in the condensation absorption tank, the gas collection main pipeline runs through the upper end of the condensation absorption tank and stretches into the liquid water bottom in the condensation absorption tank, and the upper end of the condensation absorption tank is provided with an air outlet.
2. The fermentation tail gas centralized treatment device according to claim 1, characterized in that: the branch pipes are respectively provided with a first diaphragm valve.
3. The fermentation tail gas centralized treatment device according to claim 2, characterized in that: the liquid level of the liquid water in the condensation absorption tank is higher than that of the liquid water in the condensation absorption tank.
4. The fermentation tail gas centralized treatment device according to claim 3, characterized in that: the fermentation cylinder is including a jar body, motor and stirring rake, the vertical installation that self axis is rotatory can be followed to the stirring rake the jar is internal, the motor is installed jar body upper end is used for the drive the stirring rake.
5. The fermentation tail gas centralized treatment device according to claim 4, characterized in that: and a second diaphragm valve is arranged at the lower end of the tank body of the fermentation tank.
6. The application method of the fermentation tail gas centralized treatment device according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:
(1) opening a cold water inlet and a cold water outlet of the heat exchange tube, and performing circulating heat exchange;
(2) starting a fan on the main gas collection pipeline;
(3) respectively opening first diaphragm valves on the branch pipes, and leading tail gas in the fermentation tank to enter a gas collection main pipeline through a fan;
(4) the gas collection main pipeline sends tail gas to the bottom of liquid water in the condensation absorption tank;
(5) and tail gas is absorbed by liquid water in the condensation absorption tank and then discharged through an exhaust port, so that the concentrated treatment of fermentation tail gas is completed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810876598.9A CN108970326B (en) | 2018-08-03 | 2018-08-03 | Fermentation tail gas centralized treatment device and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810876598.9A CN108970326B (en) | 2018-08-03 | 2018-08-03 | Fermentation tail gas centralized treatment device and application method thereof |
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| CN108970326B true CN108970326B (en) | 2021-01-05 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010276013A (en) * | 2010-02-03 | 2010-12-09 | Toshiaki Takashima | Power generation device |
| CN206504343U (en) * | 2016-12-13 | 2017-09-19 | 上海吉态来生物技术有限公司 | The exhaust gas processing device fermented for synthesis gas |
| CN107893025A (en) * | 2017-10-02 | 2018-04-10 | 向澍予 | Magnetic tape trailer recuperation of heat and the sinusoidal pulley type straw treating device of biomass fuel processed |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201930689U (en) * | 2010-12-31 | 2011-08-17 | 山东瀛洋香精香料有限公司 | Tail gas absorption device for essence and perfume production |
| CN206463724U (en) * | 2017-01-23 | 2017-09-05 | 上海海利生物技术股份有限公司 | A kind of exhaust gas processing device of small-scale high density fermentation |
| CN207628168U (en) * | 2017-11-23 | 2018-07-20 | 上海弈柯莱生物医药科技有限公司 | A kind of small-sized fermentation tank exhaust gas processing device |
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2018
- 2018-08-03 CN CN201810876598.9A patent/CN108970326B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010276013A (en) * | 2010-02-03 | 2010-12-09 | Toshiaki Takashima | Power generation device |
| CN206504343U (en) * | 2016-12-13 | 2017-09-19 | 上海吉态来生物技术有限公司 | The exhaust gas processing device fermented for synthesis gas |
| CN107893025A (en) * | 2017-10-02 | 2018-04-10 | 向澍予 | Magnetic tape trailer recuperation of heat and the sinusoidal pulley type straw treating device of biomass fuel processed |
Non-Patent Citations (1)
| Title |
|---|
| "生物发酵行业废气治理现状";李天乐等;《资源节约与环保》;20160925(第09期);第219-220页 * |
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