CN209967909U - Fermentation tail gas cyclone - Google Patents

Abstract

The utility model discloses a fermentation tail gas cyclone, it includes the cylinder, the fluid-discharge tube, the blast pipe, collision board and backward flow board, the cylinder top has the air inlet, the cylinder bottom is connected with the fluid-discharge tube, the blast pipe sets up in the cylinder, the axial lead of blast pipe is coaxial with the axial lead of cylinder, the blast pipe lower extreme is connected with the cylinder wall of cylinder and runs through the section of thick bamboo wall and extend to the outside, the slope of collision board sets up in the cylinder to be located blast pipe top, make tail gas and collision board collision back through the clearance between collision board and cylinder inner wall down flow along the rotation of cylinder inner wall, the backward flow board is the taper pipe structure, and for upwards contracting towards collision board direction, backward flow board and blast pipe outer wall connection for the tail gas flows up along the rotation of blast pipe outer wall after colliding with the backward flow board. Adopt the utility model discloses, realize fermentation tail gas-liquid separation's function, improve the rate of recovery of zymotic fluid, reduction in production cost.

Description

Fermentation tail gas cyclone

Technical Field

The utility model relates to a fermentation equipment technical field especially relates to a fermentation tail gas separation device.

Background

The fermentation treatment is usually carried out by mixing the raw materials with the fermentation thalli and then placing the mixture in a fermentation tank, foam is generated in the fermentation process, and foam containing a large amount of fermentation liquor enters an exhaust system along with fermentation tail gas, so that the waste of the fermentation liquor is caused, the yield is reduced, the production cost is high, the probability of bacterial contamination is increased, and great influence is brought to the production. In order to reduce the influence, the fermentation liquor is recovered by adopting a cyclone separator at present, the existing cyclone separator generally takes in air from the side edge and exhausts air from the upper end, the gas-liquid separation stroke is short, so that the separation effect is poor, the recovery rate of the fermentation liquor is not ideal, and the production cost cannot be reduced.

Disclosure of Invention

The utility model aims to solve the technical problem that a fermentation tail gas cyclone is provided, realize fermentation tail gas-liquid separation's function, improve the rate of recovery of zymotic fluid, reduction in production cost.

In order to solve the technical problem, the utility model provides a fermentation tail gas cyclone separator which comprises a separating cylinder, a liquid discharge pipe, an exhaust pipe, a collision plate and a reflux plate, the top of the separating cylinder is provided with an air inlet, the bottom of the separating cylinder is connected with a liquid discharge pipe, the exhaust pipe is arranged in the separating cylinder, the axial lead of the exhaust pipe is coaxial with the axial lead of the separating cylinder, the lower end of the exhaust pipe is connected with the cylinder wall of the separating cylinder and penetrates through the cylinder wall to extend to the outside, the collision plate is obliquely arranged in the separating cylinder, and is positioned above the top end of the exhaust pipe, so that the tail gas is collided with the collision plate and then rotates along the inner wall of the separation cylinder through a gap between the collision plate and the inner wall of the separation cylinder to flow downwards, the reflux plate is of a conical pipe structure, and the backflow plate is connected with the outer wall of the exhaust pipe for upwards contracting towards the direction of the collision plate, so that the tail gas flows upwards along the outer wall of the exhaust pipe after colliding with the backflow plate.

The exhaust pipe is a straight pipe section and a bent pipe section, and the axis of the separating cylinder is coaxial with the axis of the straight pipe section of the exhaust pipe and the axis of the reflux plate.

Wherein, two crescent gaps are arranged between the collision plate and the inner wall of the separation cylinder.

Wherein the included angle between the plate surface of the collision plate and the horizontal plane is 18-25 degrees.

Wherein the cone angle of the reflux plate is 100-120 degrees.

Wherein, the outer wall of the exhaust pipe is provided with a spiral guide plate.

The liquid level detector is used for detecting the liquid level height of the recovered liquid at the bottom of the separation cylinder, and is connected with the valve and electrically connected with the liquid level detector.

The bottom in the separation cylinder is provided with a temperature detector and a heat exchanger, and the controller is electrically connected with the temperature detector and the heat exchanger.

Implement the utility model has the advantages that: (1) the inclined collision plate and the inner wall of the separation barrel form two gaps which are not at the same horizontal height, so that gas flows downwards spirally, and the backflow plate is arranged, so that the gas flows upwards spirally after colliding with the backflow plate, the flowing distance of the gas is increased, and the gas-liquid separation effect is improved; (2) the liquid level detector detects the temperature of the recovered fermentation liquid, and the controller controls the opening or closing of the valve to prevent fermentation tail gas from flowing into the separation cylinder from the liquid discharge pipe; (3) the temperature detector and the heat exchanger are arranged to ensure the temperature of the fermentation liquor to be constant, so that the activity of the fermentation strain is kept.

Drawings

FIG. 1 is a front sectional view of a fermentation tail gas cyclone provided by the present invention;

FIG. 2 is an enlarged view taken at point I in FIG. 1;

FIG. 3 is a view A-A of FIG. 1;

FIG. 4 is a schematic view of the flow direction of the fermentation tail gas from the fermentation tail gas cyclone provided by the present invention;

fig. 5 is a front view of an exhaust pipe in the fermentation tail gas cyclone provided by the utility model.

In the figure: 1. a separation cylinder; 11. an air inlet; 12. a liquid level detector; 13. a temperature detector; 14. a heat exchanger; 15. a void; 2. a liquid discharge pipe; 21. a valve; 3. an exhaust pipe; 31. a baffle; 4. a collision plate; 5. and (4) a reflux plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, the utility model relates to a fermentation tail gas cyclone separator, which comprises a separating cylinder 1, a liquid discharge pipe 2, an exhaust pipe 3, a collision plate 4 and a reflux plate 5, the separation cylinder 1 is vertically arranged, the top of the separation cylinder 1 is provided with an air inlet 11, the bottom of the separation cylinder 1 is connected with a liquid discharge pipe 2, the exhaust pipe 3 is arranged in the separating cylinder 1, the lower end of the exhaust pipe 3 is connected with the cylinder wall of the separating cylinder 1 and extends to the outside by penetrating through the cylinder wall, the collision plate 4 is obliquely arranged in the separating cylinder 1, and is located above the top end of the exhaust pipe 3, specifically, referring to fig. 3, the collision plate 4 is an elliptical plate, the length of the major axis is the same as the diameter of the inner wall of the separation cylinder 1, and the collision plate 4 is welded to the inner wall of the separation cylinder 1 at the contact position, and the collision plate 4 may be a circular plate having the same diameter as the inner wall of the separation cylinder 1. Leave the crescent space 15 that is used for gas to flow down between collision board 4 and the 1 inner wall of separator that the slope set up, backward flow board 5 is the taper pipe structure, and for upwards shrinking towards collision board 4 directions, backward flow board 5 and 3 outer wall connections of blast pipe, specifically, blast pipe 3 is a straight tube section and a bend section, and the axial lead of separator 1 and the axial lead of 3 straight tube sections of blast pipe are coaxial with the axial lead of backward flow board 5. Referring to fig. 4, fermentation tail gas with foam enters the separation cylinder 1 from the gas inlet 11, after the tail gas collides with the collision plate 4, the foam is broken to form small droplets, the small droplets are carried by the tail gas flowing at high speed to flow downwards through the gaps 15, the gaps 15 are crescent-shaped, the heights of the two gaps at horizontal positions are different, the wind direction of a northern hemisphere is deflected towards the right side due to the rotation of the earth, when the tail gas passes through the gaps 15, the tail gas flows towards a low-pressure part and flows downwards along the inner wall of the separation cylinder 1 in a rotating manner under the action of the deflection force of the earth, and the small droplets are thrown to the inner wall of the separation cylinder 1 under the action of centrifugal force and flow downwards along the inner wall; tail gas and 5 outer walls of backward flow board 5 outer walls up flow of back-flow board after colliding to along 3 outer walls of blast pipe rotation up-flows, the droplet gets rid of 1 inner wall of cylinder under the effect of centrifugal force, and down-flows along the inner wall, and tail gas after the gas-liquid separation is discharged from blast pipe 3 at last, and the droplet assembles the bottom in cylinder 1, flows back to the fermentation cylinder through fluid-discharge tube 2.

Preferably, referring to fig. 1 and 4, the included angle between the surface of the collision plate 4 and the horizontal plane is 20 °, so that two gaps 15 with different horizontal heights are formed between the collision plate 4 and the inner wall of the separation cylinder 1, the gas forms a rotational flow through the gaps 15 and spirally flows downwards along the inner wall of the separation cylinder 1 in an anticlockwise direction, and meanwhile, the liquid drops are thrown onto the inner wall by the action of centrifugal force.

Preferably, referring to fig. 1 and 4, the cone angle of the return plate 5 is 120 °, and after the gas rotating counterclockwise collides with the return plate 5, the gas flows upward along the outer wall of the return plate 5 and spirally upward along the outer wall of the exhaust pipe 3 counterclockwise.

Preferably, referring to fig. 5, the outer wall of the exhaust pipe 3 is provided with a spiral guide plate 31, specifically, the guide plate 31 rotates counterclockwise upwards, so that the gas flowing upwards flows along the outer wall of the exhaust pipe 3 in a counterclockwise rotation manner, and meanwhile, the small liquid drops are thrown onto the inner wall of the separation cylinder 1 under the action of centrifugal force.

Preferably, referring to fig. 2, the device further comprises a controller, the liquid discharge pipe 2 is provided with a valve 21, the separation cylinder 1 is internally provided with a liquid level detector 12, the controller is connected with the valve 21, and the controller is electrically connected with the liquid level detector 12. The liquid level detector 12 adopts a floating ball liquid level transmitter, the controller is electrically connected with the liquid level detector 12 and is used for monitoring the liquid level height of fermentation liquor at the bottom in the separation cylinder 1, a height interval is preset in the controller, if the detection value of the liquid level detector 12 is higher than the interval range, the controller controls the valve 21 to be opened, and the fermentation liquor flows back to the fermentation tank along the liquid discharge pipe 21; until the detection value of the liquid level detector 12 is lower than the height interval, the controller controls the valve 21 to close. The controller receives the signal of the liquid level detector 12 to control the opening or closing of the valve 21, so that the tail gas of the fermentation tank is prevented from being discharged into the separation cylinder 1 from the liquid discharge pipe 2 to influence the gas-liquid separation effect of the tail gas.

Preferably, referring to fig. 2, a temperature detector 13 and a heat exchanger 14 are arranged at the bottom in the separation cylinder 1, the controller is electrically connected with the temperature detector 13 and the heat exchanger 14, and the temperature detector 13 is used for detecting the temperature of the recovered fermentation liquor and sending signals to the controller; the heat exchanger 14 is an immersion type coil heat exchanger, liquid is connected outside the tube in the heat exchanger as a heat source, the recovered fermentation liquor is heated or cooled in a heat transfer mode, and the temperature of the heat exchanger 14 is controlled by a controller so as to control the temperature of the recovered fermentation liquor, so that the fermentation strains in the heat exchanger keep activity.

The working principle is as follows: fermented tail gas with foam enters the separation cylinder 1 from the gas inlet 11, the tail gas rebounds after colliding with the inclined collision plate 4, the foam is broken to form small liquid drops, the small liquid drops spirally flow downwards along with the gas through the collision plate 4 and the two crescent gaps 15 on the inner wall of the separation cylinder 1, and the liquid drops are thrown onto the inner wall under the action of centrifugal force; then, after colliding with the reflux plate 5, the gas flows to the outer wall of the exhaust pipe 3 along the outer wall of the reflux plate 5 and spirally flows upwards along the outer wall of the exhaust pipe 3, and liquid drops are thrown onto the inner wall under the action of centrifugal force; and finally, the airflow flows to the top and is discharged from the exhaust pipe 3, and the recovered fermentation liquor is converged downwards along the inner wall of the separation cylinder 1 and flows back to the fermentation tank through the liquid discharge pipe 2. Adopt the utility model discloses, realize fermentation tail gas-liquid separation's function, improve the rate of recovery of zymotic fluid, reduction in production cost.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (8)

1. A fermentation tail gas cyclone separator is characterized by comprising a separation cylinder (1), a liquid discharge pipe (2), an exhaust pipe (3), a collision plate (4) and a reflux plate (5), wherein the top of the separation cylinder (1) is provided with an air inlet (11), the bottom of the separation cylinder (1) is connected with the liquid discharge pipe (2), the exhaust pipe (3) is arranged in the separation cylinder (1), the lower end of the exhaust pipe (3) is connected with the cylinder wall of the separation cylinder (1) and extends to the outside through the cylinder wall, the collision plate (4) is obliquely arranged in the separation cylinder (1) and is positioned above the top end of the exhaust pipe (3), so that tail gas collides with the collision plate (4) and then flows downwards through a gap between the collision plate (4) and the inner wall of the separation cylinder (1) along the inner wall of the separation cylinder (1) in a rotating manner, the reflux plate (5) is of a conical pipe structure and upwards shrinks towards the collision plate (4), the reflux plate (5) is connected with the outer wall of the exhaust pipe (3), so that the tail gas collides with the reflux plate (5) and then flows upwards along the outer wall of the exhaust pipe (3) in a rotating way.

2. The fermentation tail gas cyclone separator as claimed in claim 1, wherein the exhaust pipe (3) is a straight pipe section and a bent pipe section, and the axis of the separation cylinder (1) is coaxial with the axis of the straight pipe section of the exhaust pipe (3) and the axis of the reflux plate (5).

3. A fermentation tail gas cyclone separator according to claim 1, characterized in that two crescent-shaped gaps (15) are provided between the collision plate (4) and the inner wall of the separation cylinder (1).

4. The fermentation tail gas cyclone separator as claimed in claim 1, wherein the angle between the plate surface of the collision plate (4) and the horizontal plane is 18-25 °.

5. The fermentation tail gas cyclone separator as claimed in claim 1, wherein the cone angle of the backflow plate (5) is 100 ° to 120 °.

6. The fermentation tail gas cyclone separator as claimed in claim 1, wherein the outer wall of the exhaust pipe (3) is provided with a spiral guide plate (31).

7. The fermentation tail gas cyclone separator as claimed in claim 1, further comprising a controller, wherein the liquid discharge pipe (2) is provided with a valve (21), a liquid level detector (12) for detecting the liquid level height of the recovery liquid at the bottom of the separation cylinder (1) is arranged in the separation cylinder (1), the controller is connected with the valve (21), and the controller is electrically connected with the liquid level detector (12).

8. The fermentation tail gas cyclone separator as claimed in claim 7, wherein a temperature detector (13) and a heat exchanger (14) are arranged at the bottom in the separation cylinder (1), and the controller is electrically connected with the temperature detector (13) and the heat exchanger (14).

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