Yeast fermentation tail gas treatment device with simple structure and high efficiency

Abstract

The utility model discloses a yeast fermentation tail gas treatment device with a simple structure and high efficiency, which comprises a washing tower, a rotational flow tangent air inlet pipe, a circulating atomizing spraying mechanism, a circulating discharging mechanism and a pollution discharge mechanism, a tail gas discharge pipe is arranged at the top of the washing tower, and the pollution discharge mechanism and the circulating discharging mechanism are respectively arranged at the bottom of the washing tower. The rotational flow tangent air inlet pipe extends into the washing tower from the side wall of the washing tower, a circulating atomization spraying mechanism is arranged in the washing tower, the liquid spraying end of the circulating atomization spraying mechanism is arranged above the rotational flow tangent air inlet pipe, and the liquid inlet end of the circulating atomization spraying mechanism is connected with the circulating discharging mechanism. The device is simple in structure, convenient to maintain, flexible to use, low in manufacturing cost, capable of efficiently removing moisture, peculiar smell and zymophyte in the fermentation tail gas, avoiding blockage of the washing tower and guaranteeing normal operation of a yeast fermentation tail gas treatment system, and low in use and operation cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to yeast bacteria biological fermentation technical field especially is a kind of simple structure efficient yeast fermentation tail gas treatment device. BACKGROUND

[0002] A large amount of fermentation tail gas is discharged in the yeast biological fermentation production process, and a large amount of water and yeast fermentation bacteria are usually entrained in the tail gas, which affects the gas quantity control and the subsequent processing of tail gas odor and bacterial discharge, and may directly lead to system shutdown in severe cases.

[0003] Therefore, a simple structure efficient yeast fermentation tail gas treatment device is needed. UTILITY MODEL CONTENT

[0004] The utility model provides a simple structure efficient yeast fermentation tail gas treatment device, solve the technical problem that yeast fermentation tail gas is discharged odor processing and a large amount of water and yeast fermentation bacteria are discharged.

[0005] The utility model discloses a simple structure efficient yeast fermentation tail gas treatment device, including washing tower, cyclone tangent inlet pipe, circulating atomization spraying mechanism, circulating discharge mechanism and blowdown mechanism, the top of washing tower is equipped with tail gas discharge pipe, the bottom of washing tower is equipped with blowdown mechanism and circulating discharge mechanism respectively, cyclone tangent inlet pipe extends into washing tower from the lateral wall of washing tower, the inside of washing tower is equipped with circulating atomization spraying mechanism, and the liquid injection end of circulating atomization spraying mechanism is arranged in the upper of cyclone tangent inlet pipe, and the liquid inlet end of circulating atomization spraying mechanism is connected with circulating discharge mechanism.

[0006] The simple structure efficient yeast fermentation tail gas treatment device, preferably, the circulating atomization spraying mechanism includes upper spraying pipeline, lower spraying pipeline, a plurality of upper spraying heads, a plurality of lower spraying heads and connecting pipeline, the upper spraying pipeline is connected with a plurality of upper spraying heads, the lower spraying pipeline is connected with a plurality of lower spraying heads, the upper spraying pipeline and the lower spraying pipeline are connected with the circulating discharge mechanism through the connecting pipeline, a plurality of upper spraying heads and a plurality of lower spraying heads are arranged in the washing tower, and a plurality of upper spraying heads and a plurality of lower spraying heads are arranged above the cyclone tangent inlet pipe, the spraying range formed by the upper spraying head and the lower spraying head covers the cross section of the washing tower inner chamber.

[0007] The simple and efficient yeast fermentation tail gas treatment device, preferably, the circulating discharge mechanism comprises a circulating pipeline, a first stop valve, a spraying circulating pump and an alkali solution batching tank, one end of the circulating pipeline is connected with the bottom of the washing tower, the first stop valve is arranged on the circulating pipeline, the other end of the circulating pipeline is connected with the connecting pipeline through the spraying circulating pump, the circulating pipeline between the first stop valve and the spraying circulating pump is connected with the alkali solution batching tank, and a third stop valve is further arranged at the outlet of the alkali solution batching tank.

[0008] The simple and efficient yeast fermentation tail gas treatment device, preferably, the pollution discharge mechanism comprises a pollution discharge pipeline and a second stop valve, the pollution discharge pipeline is connected with the bottom of the washing tower, and the second stop valve is arranged on the pollution discharge pipeline.

[0009] The simple and efficient yeast fermentation tail gas treatment device, preferably, the cyclone tangent gas inlet pipe is arranged above the bottom liquid level in the inner cavity of the washing tower.

[0010] The simple and efficient yeast fermentation tail gas treatment device, preferably, a plurality of upper spraying heads are arranged at the top of the inner cavity of the washing tower, a plurality of lower spraying heads are arranged below the plurality of upper spraying heads, and the plurality of upper spraying heads and the plurality of lower spraying heads are arranged above the cyclone tangent gas inlet pipe.

[0011] The simple and efficient yeast fermentation tail gas treatment device, preferably, a liquid level meter is further arranged on the side wall of the washing tower.

[0012] Beneficial effects are:

[0013] 1. The fermentation tail gas enters the washing tower from the cyclone tangent gas inlet pipe. Due to the tangential direction of the cyclone tangent gas inlet pipe at the gas inlet, the yeast fermentation tail gas enters the inner cavity of the washing tower in a spiral downward manner. The liquid droplets and fermentation bacteria with large specific gravity fall downward under the action of centrifugal force or fall downward after acting on the inner wall of the washing tower in the cyclone process, so that primary separation of the bacteria is realized. The tail gas floats upward after descending for a certain distance, is washed by the alkaline liquid sprayed by the lower spraying head, and further separates the odor, liquid droplets and fermentation bacteria in the tail gas. The remaining tail gas ascends to the spraying device, and the alkaline liquid atomized and sprayed by the upper spraying head removes the residual water and bacteria in the tail gas, so that the effect of completely removing the bacteria is achieved, and normal operation of the system is ensured.

[0014] 2. The advantage of using a tangential swirl inlet pipe and dual atomization spraying with upper and lower spray heads is that the relatively lightest droplets and gases in the yeast fermentation exhaust gas enter the atomization spray absorption treatment device tangentially, move downwards first, and then float upwards. This increases the time and distance the fermentation exhaust gas travels through the scrubbing tower, which helps the upward exhaust gas to fully and evenly fill the inner cavity of the scrubbing tower. This allows the droplets and yeast cells in the upward exhaust gas to fully contact the atomized liquid of the circulating spray device, greatly improving the removal effect of odors, droplets, and bacteria in the exhaust gas. It can prevent the discharge of bacteria and remove the discharge of odors and other components from the exhaust gas.

[0015] This invention features a simple structure, convenient maintenance, flexible use, and low manufacturing cost. It can efficiently remove moisture, odor, and fermentation cells from fermentation exhaust gas, avoid clogging the washing tower, ensure the normal operation of the yeast fermentation exhaust gas treatment system, and has low operating costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of a swirl tangential feed structure.

[0018] In the picture:

[0019] 1. Scrubber; 2. Swirl tangential air inlet pipe;

[0020] 3-1. Upper spray pipe; 3-2. Lower spray pipe; 3-3. Upper spray head;

[0021] 3-4. Lower sprinkler head; 3-5. Connecting pipes;

[0022] 4. Level gauge; 5. Alkali solution mixing tank; 6. Spray circulation pump;

[0023] 7-1. Sewage pipe; 7-2. Second shut-off valve;

[0024] 8-1. Circulation pipeline; 8-2. First shut-off valve;

[0025] 9. Exhaust gas discharge pipe; 10. Third shut-off valve. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] In the description of the utility model, it needs to explain, the orientation or position relation that the term "upper", "under" and the like indicate is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicate or imply that the system or element indicated must have a particular orientation, construct and operate with a particular orientation, therefore cannot be understood as the limitation of the utility model. In addition, the term "first", "second" and the like are used to limit parts, only for the convenience of distinguishing the above-mentioned parts, if not otherwise declared, the above-mentioned words do not have special meaning, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term "set" and "connect" should be broad sense understanding, for example, can be fixedly connected, can be detachably connected, or integrally connected;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0029] The utility model provides a kind of simple structure efficient yeast fermentation tail gas treatment device, including washing tower, cyclone tangent inlet pipe, circulating atomization spraying mechanism, circulating discharge mechanism and pollution discharge mechanism, the top of washing tower is equipped with tail gas discharge pipe, the bottom of washing tower is equipped with the pollution discharge mechanism and the circulating discharge mechanism respectively, the cyclone tangent inlet pipe extends from the side wall of the washing tower into the washing tower, the inside of the washing tower is equipped with the circulating atomization spraying mechanism, the liquid injection end of the circulating atomization spraying mechanism is arranged above the cyclone tangent inlet pipe, the liquid inlet end of the circulating atomization spraying mechanism is connected with the circulating discharge mechanism.The utility model structure is simple, maintenance is convenient, use flexible, manufacturing cost is low, can efficiently remove moisture odor and fermentation bacteria in fermentation tail gas, avoid blocking washing tower, guarantee yeast fermentation tail gas treatment system normal operation, and use operating cost is low.

[0030] Below a kind of simple structure efficient yeast fermentation tail gas treatment device is taken as example to elaborate entire technical process in detail.

[0031] As Figure 1As shown, a simple and efficient yeast fermentation tail gas treatment device, including washing tower 1, cyclone tangent inlet pipe 2, circulating atomization spraying mechanism, circulating discharge mechanism and pollution discharge mechanism, the top of washing tower 1 is provided with exhaust outlet, the bottom of washing tower 1 is respectively provided with the pollution discharge mechanism and the circulating discharge mechanism, cyclone tangent inlet pipe 2 extends from the side wall of washing tower 1 into washing tower 1, the inside of washing tower 1 is provided with the circulating atomization spraying mechanism, cyclone tangent inlet pipe 2 is arranged above the bottom liquid level in the inner cavity of washing tower 1, the liquid spraying end of the circulating atomization spraying mechanism is arranged above cyclone tangent inlet pipe 2, the liquid inlet end of the circulating atomization spraying mechanism is connected with the circulating discharge mechanism. Wherein, the side wall of washing tower 1 is also provided with liquid level meter 4.

[0032] Continue as Figure 1 As shown, the circulating atomization spraying mechanism includes upper spraying pipeline 3-1, lower spraying pipeline 3-2, a plurality of upper spraying heads 3-3, a plurality of lower spraying heads 3-4 and connecting pipeline 3-5, upper spraying pipeline 3-1 is connected with a plurality of upper spraying heads 3-3, lower spraying pipeline 3-2 is connected with a plurality of lower spraying heads 3-4, upper spraying pipeline 3-1 and lower spraying pipeline 3-2 are connected with the circulating discharge mechanism through connecting pipeline 3-5, a plurality of upper spraying heads 3-3 and a plurality of lower spraying heads 3-4 are arranged in washing tower 1, and a plurality of upper spraying heads 3-3 and a plurality of lower spraying heads 3-4 are arranged above cyclone tangent inlet pipe 2, the spraying range formed by a plurality of upper spraying heads 3-3 and a plurality of lower spraying heads 3-4 covers the cross section of the inner cavity of washing tower 1.

[0033] Wherein, a plurality of upper spraying heads 3-3 and a plurality of lower spraying heads 3-4 are arranged in a straight line on upper spraying pipeline 3-1 and lower spraying pipeline 3-2 respectively.

[0034] The liquid sprayed by a plurality of upper spraying heads 3-3 and a plurality of lower spraying heads 3-4 moves downward and contacts the bacteria carried in the tail gas and falls to the bottom of washing tower 1, the liquid at the bottom of washing tower 1 enters circulating pipeline 8-1 and is conveyed upward to connecting pipeline 3-5 under the drive of spraying circulating pump 6, then enters upper spraying pipeline 3-1 and lower spraying pipeline 3-2, and finally is sprayed out from upper spraying head 3-3 and lower spraying head 3-4, achieving the effect of recycling and reducing the liquid loss of bacteria separation.

[0035] Wherein, the spraying range of upper spraying head 3-3 and lower spraying head 3-4 covers the cross section of the inner cavity of washing tower 1, so that the liquid sprayed by upper spraying head 3-3 and lower spraying head 3-4 fully and effectively contacts the upward tail gas in washing tower 1, improving the removal effect of the circulating atomization spraying mechanism on bacteria.

[0036] Wherein, the upper spray head 3-3 and the lower spray head 3-4 are each provided with no less than one, and the spray range of the upper spray head 3-3 and the lower spray head 3-4 covers the cross section of the inner cavity of the washing tower 1.

[0037] Wherein, the upper spray head 3-3 is arranged at the top of the inner cavity of the washing tower 1, the lower spray head 3-4 is arranged below the upper spray head 3-3, and the upper spray head 3-3 and the lower spray head 3-4 are both arranged above the cyclone tangential inlet pipe 2.

[0038] Further, the cyclone tangential inlet pipe 2 is located at the lower 1 / 3 of the inner cavity of the washing tower 1, as shown in Figure 2 The inlet direction of the cyclone tangential inlet pipe 2 is tangential at the inlet, the upper spray head 3-3 is arranged at the top of the inner cavity of the washing tower 1 above the cyclone tangential inlet pipe 2, and the lower spray head 3-4 is arranged at the middle 1 / 2 of the inner cavity of the washing tower 1 above the cyclone tangential inlet pipe 2.

[0039] As shown in Figure 1 The circulating discharge mechanism includes a circulating pipeline 8-1, a first stop valve 8-2, a spray circulating pump 6, and a lye batching tank 5, one end of the circulating pipeline 8-1 is connected to the bottom of the washing tower 1, the first stop valve 8-2 is arranged on the circulating pipeline 8-1, the other end of the circulating pipeline 8-1 is connected to the connecting pipeline 3-5 through the spray circulating pump 6, the circulating pipeline 8-1 between the first stop valve 8-2 and the spray circulating pump 6 is connected to the lye batching tank 5, and a third stop valve 10 is further arranged at the outlet of the lye batching tank 5.

[0040] As shown in Figure 1 The pollution discharge mechanism includes a pollution discharge pipeline 7-1 and a second stop valve 7-2, the pollution discharge pipeline 7-1 is connected to the bottom of the washing tower 1, and the second stop valve 7-2 is arranged on the pollution discharge pipeline 7-1.

[0041] Working process:

[0042] The fermentation tail gas enters the washing tower 1 from the cyclone tangential inlet pipe 2, and due to the tangential direction of the cyclone tangential inlet pipe 2 at the inlet, the yeast fermentation tail gas enters the inner cavity of the washing tower 1 in a spiral downward manner, and the liquid droplets and fermentation bacteria with large specific gravity in the yeast fermentation tail gas fall downward under the action of centrifugal force or after acting on the inner wall of the washing tower 1, which can realize primary separation of the bacteria, the tail gas floats upward after descending for a certain distance, and is washed by the alkaline liquid sprayed by the upper spray head 3-3 and the lower spray head 3-4, further separating the odor, liquid droplets and fermentation bacteria in the tail gas, and the remaining tail gas rises to the spraying device 1, and the alkaline liquid atomized and sprayed by the upper spray head 3-3 and the lower spray head 3-4 removes the residual water and bacteria in the tail gas, achieving the effect of completely removing the bacteria and ensuring normal operation of the system.

[0043] The liquid sprayed from the upper spray head 3-3 and the lower spray head 3-4 moves downward and contacts the bacteria in the tail gas and carries the bacteria to the bottom of the washing tower 1, the liquid at the bottom of the washing tower 1 enters the circulating pipeline 8-1, is driven by the spray circulating pump 6 to be sent upward to the connecting pipeline 3-5, then enters the upper spray pipeline 3-1 and the lower spray pipeline 3-2, and finally is sprayed from the upper spray head 3-3 and the lower spray head 3-4, so that the effect of recycling is achieved and the liquid loss in the bacteria separation is reduced.

[0044] The blowdown pipeline 7-1 is used for discharging the excess liquid in the washing tower 1 to maintain the liquid balance in the cavity of the washing tower 1.

[0045] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A simple and efficient yeast fermentation tail gas treatment device, characterized in that, The utility model provides a kind of tower scrubbing device, including washing tower, cyclone tangent air inlet pipe, circulating atomization spray mechanism, circulating discharge mechanism and pollution discharge mechanism, the top of the washing tower is equipped with tail gas discharge pipe, the bottom of the washing tower is equipped with the pollution discharge mechanism and the circulating discharge mechanism respectively, the cyclone tangent air inlet pipe extends into the washing tower from the lateral wall of the washing tower, and the air inlet direction of the cyclone tangent air inlet pipe is the tangential direction of air inlet, the inside of the washing tower is equipped with the circulating atomization spray mechanism, the liquid end of the circulating atomization spray mechanism is arranged above the cyclone tangent air inlet pipe, and the liquid end of the circulating atomization spray mechanism is connected with the circulating discharge mechanism; The circulating atomization spray mechanism includes upper spray pipeline, lower spray pipeline, multiple upper spray heads, multiple lower spray heads and connecting pipeline, the upper spray pipeline is connected with multiple upper spray heads, the lower spray pipeline is connected with multiple lower spray heads, the upper spray pipeline and the lower spray pipeline are connected with the circulating discharge mechanism through the connecting pipeline, multiple upper spray heads and multiple lower spray heads are arranged in the washing tower, and multiple upper spray heads and multiple lower spray heads are arranged above the cyclone tangent air inlet pipe, the spraying range formed by the upper spray head and the lower spray head covers the cross section of the inner cavity of the washing tower; The circulating discharge mechanism includes circulating pipeline, first stop valve, spray circulating pump and lye batching tank, one end of the circulating pipeline is connected with the bottom of the washing tower, the first stop valve is arranged on the circulating pipeline, the other end of the circulating pipeline is connected with the connecting pipeline through the spray circulating pump, the circulating pipeline between the first stop valve and the spray circulating pump is connected with the lye batching tank, and a third stop valve is further arranged at the outlet of the lye batching tank.

2. The simple and efficient yeast fermentation off-gas treatment device according to claim 1, characterized in that, The pollution discharge mechanism includes pollution discharge pipeline and second stop valve, the pollution discharge pipeline is connected with the bottom of the washing tower, and the second stop valve is arranged on the pollution discharge pipeline.

3. The simple and efficient yeast fermentation off-gas treatment device according to claim 2, characterized in that, The cyclone tangent air inlet pipe is arranged above the bottom liquid level of the inner cavity of the washing tower.

4. The simple and efficient yeast fermentation off-gas treatment device according to claim 3, characterized in that, Multiple upper spray heads are arranged at the top of the inner cavity of the washing tower, multiple lower spray heads are arranged below multiple upper spray heads, and multiple upper spray heads and multiple lower spray heads are both arranged above the cyclone tangent air inlet pipe.

5. The simple and efficient yeast fermentation off-gas treatment device according to any one of claims 1 to 4, characterized in that, A liquid level meter is further arranged on the lateral wall of the washing tower.

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