CN219615260U - Yeast fermentation tank tail gas treatment device - Google Patents

Abstract

The utility model discloses a device for treating tail gas of a yeast fermentation tank, which belongs to the technical field of tail gas treatment of the yeast fermentation tank, and is connected with an exhaust pipe at the upper end of a fermentation tank body, and is characterized in that: the exhaust pipe is connected with a reverse suction preventing structure; the anti-suck-back structure comprises a buffer chamber, a collecting chamber and a reaction chamber; the bottom plate of the buffer chamber is penetrated with an air inlet pipe and extends to the lower part of the alkali liquor liquid level of the reaction chamber; the collecting chamber is connected with the water inlet end of the power drainage pump; the side wall of the collecting chamber is provided with a spoiler, and the bottom plate of the collecting chamber is provided with a vent hole; the water outlet end of the power drainage pump is connected with the Venturi scrubber; the venturi scrubber is connected with the high-level tank, and the discharge port of the high-level tank is provided with a valve, so that the venturi scrubber has the beneficial effects that: the reverse suction prevention structure can effectively prevent waste liquid from flowing back to the fermentation tank in the tail gas treatment process; the power drainage pump stabilizes the flow direction of tail gas; the anti-suck-back structure and the Venturi scrubber can absorb the tail gas twice, so that the volatile organic compounds, the peculiar smell gas, the harmful gas and the dust particles in the tail gas are absorbed more thoroughly.

Description

Yeast fermentation tank tail gas treatment device

Technical field:

the utility model belongs to the technical field of yeast fermentation tank tail gas treatment, and particularly relates to a yeast fermentation tank tail gas treatment device.

The background technology is as follows:

yeast fermentation refers to the process of metabolizing yeast with carbohydrates under anaerobic or hypoxic conditions to produce ethanol and carbon dioxide. Such fermentation processes are widely used in food and beverage production, such as bread, beer, wine, and the like; yeast fermentation can also be used in the fields of biofuel production, medicine production and the like. During fermentation, yeast is metabolized to produce energy to complete its life and reproduction, and this also provides human with useful products and services.

A fermenter is a device for mechanically stirring and fermenting materials, which is commonly used in industry for fermenting yeasts. The production raw materials can generate more gases in the fermentation process in the fermentation tank, the main components of the gases are carbon dioxide and water vapor, and the gases also contain residual volatile organic compounds, peculiar smell gases and harmful gases, and dust particles possibly exist, can not be directly discharged into the air and need to be subjected to tail gas treatment.

In the existing yeast fermentation tank tail gas treatment device, the condition that waste liquid of washing tail gas flows back to the fermentation tank often occurs, and normal use of the fermentation tank is affected; meanwhile, the device is used for treating the tail gas at one time, so that the tail gas is difficult to thoroughly clean.

Therefore, there is an urgent need for a device for treating the tail gas of a yeast fermentation tank to solve the problem of treating the tail gas generated in the yeast fermentation tank.

The utility model comprises the following steps:

in order to solve the problems and overcome the defects in the prior art, the utility model provides a tail gas treatment device of a yeast fermentation tank;

the first technical problem to be solved is: in the treatment process of tail gas generated by the existing yeast fermentation tank, the waste liquid for washing the tail gas flows back to the fermentation tank;

the second technical problem to be solved is: the existing tail gas treatment device of the yeast fermentation tank is used for treating the tail gas at one time, so that the tail gas is difficult to thoroughly wash.

The specific technical scheme for solving the technical problems is as follows: the yeast fermentation tank tail gas treatment device is connected with an exhaust pipe at the upper end of the fermentation tank body, and is characterized in that: the exhaust pipe is connected with the anti-suck-back structure through an air duct I;

the anti-suck-back structure comprises a buffer chamber, a collecting chamber and a reaction chamber for containing alkali liquor; the air guide pipe I is inserted into the top plate of the buffer chamber, and the bottom plate of the buffer chamber is provided with an air inlet pipe in a penetrating way and extends downwards below the liquid level of the alkali liquor in the reaction chamber;

the collecting chamber is connected with the water inlet end of the power drainage pump through an air guide pipe II inserted on the top plate of the collecting chamber; the side walls of the collecting chambers are provided with spoilers in a staggered manner, and the bottom plates of the collecting chambers are provided with vent holes connected with the reaction chambers; the water outlet end of the power drainage pump is connected with the Venturi scrubber;

the venturi scrubber is connected with a high-level tank containing alkali liquor through a liquid guide pipe, and a valve is arranged on a discharge hole of the high-level tank.

Further, the power drainage pump is a horizontal centrifugal pump.

Further, the venturi scrubber comprises a venturi tube and a dehydrator, wherein the venturi tube comprises a shrinkage tube, a throat tube and a diffusion tube.

Further, the dehydrator is a cyclone dehydrator.

Further, the water outlet end is fixedly connected with the shrinkage tube; the diffusion pipe is fixedly connected with the dehydrator.

Further, the high-level tank is connected with the throat through a liquid guide pipe.

The beneficial effects of the utility model are as follows:

the utility model has the advantages that the reverse suction prevention structure can effectively prevent the waste liquid of washing tail gas from flowing back to the fermentation tank in the treatment process of the tail gas generated by the yeast fermentation tank; meanwhile, a power drainage pump is provided, so that the flowing direction of the tail gas can be stabilized, and the tail gas is prevented from flowing back to the fermentation tank;

the utility model has the advantages that the anti-suck-back structure and the venturi scrubber connected with the high-level tank are provided, and the alkali liquor in the reaction chamber of the anti-suck-back structure and the alkali liquor flowing into the venturi scrubber from the high-level tank can absorb the tail gas generated in the saccharomycete fermentation tank for two times, so that the volatile organic matters, the peculiar smell gas, the harmful gas and the dust particles in the tail gas can be absorbed more thoroughly.

Description of the drawings:

FIG. 1 is a front view of the present utility model;

FIG. 2 is a schematic view of the internal structure of the anti-suck-back structure;

FIG. 3 is a schematic perspective view of a power drain pump;

FIG. 4 is a schematic diagram of the structure of a venturi scrubber; in the accompanying drawings:

1. a fermentation tank body; 2. an exhaust pipe; 3. an air duct I; 4. a buffer chamber; 5. a collection chamber; 6. a reaction chamber; 7. an air inlet pipe; 8. an air duct II; 9. a power drainage pump; 10. a water inlet end; 11. a water outlet end; 12. a spoiler; 13. a vent hole; 14. a venturi scrubber; 15. a catheter; 16. a high tank; 17. a valve; 18. a venturi tube; 19. a dehydrator; 20. a shrink tube; 21. a throat; 22. a diffusion tube.

The specific embodiment is as follows:

in describing the present utility model, it should be understood that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "rear", "lower left", "upper right", "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the scope of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Specific embodiments of the utility model: the yeast fermentation tank tail gas treatment device is connected with the exhaust pipe 2 at the upper end of the fermentation tank body 1, and is characterized in that: the exhaust pipe 2 is connected with the anti-suck-back structure through an air duct I3;

the anti-suck-back structure comprises a buffer chamber 4, a collecting chamber 5 and a reaction chamber 6 for containing alkali liquor; the air guide pipe I3 is inserted into the top plate of the buffer chamber 4, and an air inlet pipe 7 is arranged on the bottom plate of the buffer chamber 4 in a penetrating way and extends downwards to below the liquid level of the alkali liquor in the reaction chamber 6;

the collecting chamber 5 is connected with a water inlet end 10 of the power drainage pump 9 through a gas guide pipe II 8 inserted on the top plate of the collecting chamber; the side walls of the collecting chamber 5 are provided with spoilers 12 in a staggered manner, and the bottom plate of the collecting chamber 5 is provided with vent holes 13 connected with the reaction chamber 6; the water outlet end 11 of the power drainage pump 9 is connected with a venturi scrubber 14;

the venturi scrubber 14 is connected with a high-level tank 16 containing alkali liquor through a liquid guide tube 15, and a valve 17 is arranged on a discharge hole of the high-level tank 16.

Further, the power drainage pump 9 is a horizontal centrifugal pump.

Further, the venturi scrubber 14 includes a venturi 18 and a dehydrator 19, and the venturi 18 includes a constriction 20, a throat 21, and a diffuser 22.

Further, the dehydrator 19 is a cyclone dehydrator.

Further, the water outlet end 11 is fixedly connected with the shrinkage tube 20; the diffusion pipe 22 is fixedly connected with the dehydrator 19.

Further, the upper tank 16 is connected with the throat 21 through the liquid guiding tube 15.

The utility model relates to a device for treating tail gas of a yeast fermentation tank, which comprises a main body, a main body and a main body,

1. as a preferred embodiment of the utility model, the power drainage pump 9 is preferably a horizontal centrifugal pump, the water inlet end 10 of the horizontal centrifugal pump is connected with the air duct II 8 through a flange, and the water outlet end 11 of the horizontal centrifugal pump is connected with the Venturi scrubber 14 through a flange; because the horizontal centrifugal pump is the prior art, the working principle of the horizontal centrifugal pump is not described in detail herein;

after the tail gas comes out of the fermentation tank body 1, starting a horizontal centrifugal pump, and enabling the tail gas to enter a buffer chamber 4 of a suck-back prevention structure through an exhaust pipe 2 and an air guide pipe I3 in sequence;

then, the waste gas is introduced into the alkali liquor contained in the reaction chamber 6 through the air inlet pipe 7, so that volatile organic compounds, peculiar smell gas and harmful gas in the tail gas react with the alkali liquor to be absorbed, and dust particles in the tail gas are dissolved by the alkali liquor to be a part;

the unabsorbed tail gas enters the collecting chamber 5 through the vent hole 13, the spoiler 12 on the side wall of the collecting chamber 5 can prevent dust particles in part of the tail gas from entering the air duct II 8, and then the rest tail gas is transported to the horizontal centrifugal pump through the air duct II 8 and enters the Venturi scrubber 14 through the water inlet end 10 and the water outlet end 11 in sequence;

after the horizontal centrifugal pump is shut down, the pressure in the fermentation tank body 1 is lost, so that the alkali liquor in the reaction chamber 6 is sucked backwards, and the alkali liquor can enter the buffer chamber 4 due to the existence of the buffer chamber 4, so that the reflux of the alkali liquor into the fermentation tank body 1 is effectively reduced, and the activity of yeast in the fermentation tank body 1 is affected;

2. the venturi scrubber 14 comprises a venturi 18 and a dehydrator 19; according to the working principle of the venturi tube 18, in the venturi tube 18, the flow speed of the tail gas in the shrinkage tube 20 is gradually increased, and the pressure of the air flow is gradually changed into kinetic energy; when the air flow enters the throat 21, the flow velocity reaches the maximum value;

after opening the valve 17, the alkali liquor in the high-level tank 16 flows into the throat 21 from the liquid guide pipe 10, and is highly atomized under the impact of high-speed air flow;

the high speed and low pressure at the throat 21 enable the air flow to reach a saturated state, and the volatile organic compounds, the peculiar smell gas and the harmful gas in the residual tail gas can react with alkali liquor for the second time and are absorbed; meanwhile, the air film attached to the surface of the dust particles is broken through, so that the dust particles are wetted by alkali liquor; as a result, violent collisions and agglomeration occur between the dust particles and the alkali droplets or dust particles;

after entering the diffusion tube 22, the air flow speed is reduced, the static pressure rises, and the agglomeration with dust particles as agglomerations is accelerated; the particles condensed with the alkali liquid drops continue to be condensed and collide, and the small particles are condensed into large particles which are easily trapped and separated by the dehydrator 19;

3. as a preferred embodiment of the present utility model, the dehydrator 19 is preferably a cyclone dehydrator, and after the washed tail gas enters the cyclone dehydrator, the alkali liquor drops collide with the inner wall of the dehydrator 19 under the action of centrifugal force, so that the alkali liquor drops lose kinetic energy and are separated from the clean tail gas, and the purpose of washing the tail gas is achieved.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a yeast fermentation tank tail gas processing apparatus, links to each other with blast pipe (2) of fermentation cylinder body (1) upper end, its characterized in that: the exhaust pipe (2) is connected with the anti-suck-back structure through an air duct I (3);

the anti-suck-back structure comprises a buffer chamber (4), a collecting chamber (5) and a reaction chamber (6) for containing alkali liquor; the air guide pipe I (3) is inserted into the top plate of the buffer chamber (4), and an air inlet pipe (7) is arranged on the bottom plate of the buffer chamber (4) in a penetrating way and extends downwards to below the alkali liquor liquid level of the reaction chamber (6);

the collecting chamber (5) is connected with a water inlet end (10) of the power drainage pump (9) through an air duct II (8) inserted on the top plate of the collecting chamber; the side walls of the collecting chamber (5) are provided with spoilers (12) in a staggered manner, and the bottom plate of the collecting chamber (5) is provided with vent holes (13) connected with the reaction chamber (6); the water outlet end (11) of the power drainage pump (9) is connected with the Venturi scrubber (14);

the venturi scrubber (14) is connected with a high-level tank (16) filled with alkali liquor through a liquid guide tube (15), and a valve (17) is arranged on a discharge hole of the high-level tank (16).

2. The device for treating the tail gas of the yeast fermentation tank according to claim 1, wherein the power drainage pump (9) is a horizontal centrifugal pump.

3. The apparatus according to claim 1, wherein the venturi scrubber (14) comprises a venturi tube (18) and a dehydrator (19), and the venturi tube (18) comprises a constriction tube (20), a throat tube (21) and a diffuser tube (22).

4. A yeast fermenter tail gas treatment apparatus according to claim 3, wherein the dehydrator (19) is a cyclone dehydrator.

5. The tail gas treatment device of the yeast fermentation tank according to claim 4, wherein the water outlet end (11) is fixedly connected with the shrinkage tube (20); the diffusion pipe (22) is fixedly connected with the dehydrator (19).

6. The apparatus for treating tail gas of yeast fermentation tank according to claim 5, wherein the upper tank (16) is connected to the throat (21) via a liquid conduit (15).