Treatment device for fermentation liquor spray drying tail gas

Abstract

The utility model discloses a fermentation liquor spray drying tail gas treatment device in the technical field of purification towers, which is additionally provided with a plurality of layers of separation nets, and a purifying agent is made into particles, is filled on the separation nets in the purification towers, and blocks the whole purification towers, so that organic acid in gas is adsorbed, and the tail gas is purified. The organic acid is converted into corresponding salt and water through chemical reaction instead of being dissolved through water, activated carbon is added to adsorb other impurities, meanwhile, double-layer filtration is achieved, the purification effect is better, the device is further provided with a feeding pipe and a discharging pipe, manual operation of a worker who opens a bin gate is not needed due to the fact that the device is further provided with the feeding pipe and the discharging pipe, and the device can be controlled through a discharging valve. And the purifying agent is convenient to replace.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of purification tower, in particular to a kind of processing device of fermentation liquor spray drying tail gas. BACKGROUND

[0002] Microbial fermentation liquor needs spray drying treatment, and tail gas is generated in its treatment process, the drying tail gas of this microbial fermentation liquor is often accompanied by volatile organic acid, which can cause the tail gas to have a foul odor, not only affecting the surrounding environment, but also polluting the air.

[0003] Currently, water immersion spraying is used to dissolve organic acids in tail gas through water mist to achieve purification, but the water mist also needs to be dried, and organic acid tail gas will still be discharged after drying. It can only be purified a few more times, but as long as the organic acid solution needs to be dried, there will be gaseous organic acid carried out.

[0004] Therefore, the utility model designs a kind of processing device of fermentation liquor spray drying tail gas to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of processing device of fermentation liquor spray drying tail gas, the device increases multilayer screen, and the purifying agent is made into granular, fills in the screen in the purification tower inside, and the whole purification tower is blocked, so that the organic acid of gas is adsorbed, and the organic acid is changed into corresponding salt and water by chemical reaction, instead of dissolving by water, and active carbon is also added to adsorb other impurities, and double-layer filtration is simultaneously used, so that the purification effect is better. The device is also designed with a feed pipe and a discharge pipe, so that the purifying agent can be replaced conveniently by controlling the discharge valve without manual operation after stopping the machine and opening the door.

[0006] The utility model is implemented as follows: a kind of processing device of fermentation liquor spray drying tail gas, comprising:

[0007] purification tower, screen, exhaust filter screen and flow guide cover plate;

[0008] The purification tower is a closed cavity, the bottom of the purification tower is a large-small conical funnel structure, a liquid discharge valve is arranged at the center of the conical bottom of the purification tower, and a gas inlet pipe is also connected to the conical surface at the bottom of the purification tower, and the gas inlet pipe is connected to an external tail gas pipeline;

[0009] An exhaust pipe is arranged at the top of the purification tower, and a fan is connected to the rear end of the exhaust pipe;

[0010] A screen is arranged inside the purification tower, the screen is a large-small conical funnel structure, and the purification tower is divided into independent cavities that can communicate with each other by the screen;

[0011] The screen is covered with a purifying agent, the lowest part of the screen is connected with a discharge pipe, the discharge pipe is obliquely arranged inside the purification tower, the outlet end of the discharge pipe penetrates and extends outside the purification tower, a discharge valve is arranged at the outlet end of the discharge pipe, the discharge pipe is obliquely arranged, the outlet end of the discharge pipe is lower than the height position of the inlet end, and the discharge pipe is below the screen connected therewith;

[0012] A feeding pipe is further arranged on the side wall of the purification tower, the feeding pipe is in communication with the inner cavity of the purification tower from outside to inside, and the feeding pipe is above the screen;

[0013] The exhaust filter screen is a filter screen, the exhaust filter screen is blocked above the screen, and the feeding pipe is arranged on the side wall of the purification tower between the screen and the exhaust filter screen;

[0014] The flow guide cover plate is a flat plate, a flow guide hole is arranged at the center of the flow guide cover plate, the flow guide hole is in sealed communication with the exhaust pipe, a flow baffle is further arranged below the flow guide cover plate, the flow baffle is a complete circular flat plate, a plurality of flow distribution plates are vertically arranged at the bottom of the flow guide cover plate, the flow baffle is stably hung below the flow guide cover plate through the flow distribution plates, the plurality of flow distribution plates, the flow guide cover plate and the flow baffle form a plurality of airflow channels with the same size and mutual isolation, and the exhaust pipe is in communication with the inner cavity of the purification tower through the flow guide hole and the plurality of airflow channels with mutual isolation;

[0015] The exhaust filter screen is not in contact with the flow baffle directly below.

[0016] Further, two layers of screens are arranged inside the purification tower, the two layers of screens are arranged in an upper and lower superimposed manner without being in contact, an exhaust filter screen is arranged above each layer of screens, and the screens have the same structure;

[0017] The purifying agent laid on the upper screen is activated carbon particles, and the purifying agent laid on the lower screen is calcium oxide particles.

[0018] Further, the air inlet pipe is a bent pipe, and the air inlet pipe is horizontally butt-jointed on the conical side wall of the purification tower.

[0019] Further, the flow guide cover plate is not in contact with the flow baffle.

[0020] The flow baffle is blocked directly below the flow guide hole, the airflow channel formed by the flow distribution plates, the flow guide cover plate and the flow baffle is a fan-shaped channel, and the airflow channel is horizontally communicated with the flow guide hole in the inward and outward directions.

[0021] Further, a valve is arranged at the inlet of the feeding pipe.

[0022] The inclination angle of the discharge pipe to the horizontal plane is between 30-45°.

[0023] The beneficial effects of the utility model are: 1. The utility model increases the partition net, lays the granular purifying agent on the partition net to treat the tail gas containing organic acid, increases the exhaust filter screen, can block the fine particles floated by the airflow, avoids the particles from rushing into the exhaust pipe and escaping to the outside, and can also form another purification layer on the exhaust filter screen after blocking the fine particles, not only plays the role of disturbing the airflow, avoids the airflow from passing through quickly, but also makes the fine particles suspend between the partition net and the exhaust filter screen, makes the tail gas fully contact and purify the purifying agent, and reaches better purification effect.

[0024] 2. The partition net of the device is funnel-shaped structure, and the discharge pipe is arranged at the bottom of the partition net, after the purifying agent is used for a long time and becomes invalid, the purifying agent can be discharged directly by the inclined discharge pipe and the discharge valve, the purifying agent can flow out from the funnel-shaped partition net, and other mechanisms are not needed to operate, the partition net is arranged below the feeding pipe, after the used purifying agent is discharged, the discharge valve is closed, the purifying agent can be conveyed directly by the feeding pipe, the door of the purification tower is not needed to be opened, and the machine is not needed to be stopped, the purifying agent can be directly sent in, until the new purifying agent is fully laid on the partition net, the operation is simple, other operations are not needed, the device is simple and efficient, and the production is not affected.

[0025] 3. The device also increases the flow guide cover plate and the flow baffle, the gap between the flow guide cover plate and the flow baffle is formed into a plurality of airflow channels which are isolated from each other by the flow distribution plate, the tail gas in the inner cavity of the purification tower is sent into the flow guide hole at the center from the outside through the airflow channels, the role of disturbing and dispersing the tail gas is realized, and the airflow after being dispersed can react and adsorb the purifying agent on the partition net more uniformly, avoids the airflow from passing through the purification tower too quickly and concentratedly, reaches more sufficient purification effect, and ensures that the tail gas treatment is more thorough. BRIEF DESCRIPTION OF DRAWINGS

[0026] The utility model will be further described in connection with the embodiments and with reference to the drawings.

[0027] Fig. 1 It is the whole internal structure schematic diagram of the utility model;

[0028] Fig. 2 It is the up-and-down superposition distribution structure schematic diagram of the double-layer partition net of the utility model;

[0029] Fig. 3 It is the partition net bottom structure bottom view schematic diagram of the utility model;

[0030] Fig. 4 It is the air inlet pipe bottom position relation bottom view schematic diagram of the purification tower of the utility model;

[0031] Fig. 5 Figure 2 is a schematic view of the utility model from the bottom of the position relationship between the flow guide cover plate and the flow guide hole;

[0032] Fig. 6 Figure 3 is a schematic view of the airflow channel structure formed by the flow guide cover plate, the flow distribution plate and the flow blocking plate of the utility model.

[0033] In the drawings, the components represented by each reference numeral are listed as follows:

[0034] 1-purification tower, 11-inlet pipe, 12-exhaust pipe, 13-liquid discharge valve, 14-fan, 2-separation net, 21-discharge valve, 22-discharge pipe, 23-feeding pipe, 3-exhaust filter screen, 4-flow guide cover plate, 41-flow guide hole, 42-flow distribution plate, 43-flow blocking plate. DETAILED DESCRIPTION

[0035] Please refer to Figs. 1 to 6 The utility model provides a kind of processing device for fermentation liquor spray drying tail gas, to better understand the above technical solution, the above technical solution will be explained in detail below by combining with the drawings of the specification and specific implementation.

[0036] In one specific embodiment of the technical scheme of the utility model:

[0037] It includes purification tower 1, separation net 2, exhaust filter screen 3 and flow guide cover plate 4;

[0038] Purification tower 1 is closed cavity, the bottom of purification tower 1 is upper large and lower small conical funnel structure, liquid discharge valve 13 is arranged at the center of conical bottom of purification tower 1, and the conical surface of the bottom of purification tower 1 is also connected with inlet pipe 11, and inlet pipe 11 is connected with external tail gas pipeline; Inlet pipe 11 is elbow pipe, and inlet pipe 11 is bent on the conical side wall of purification tower 1 in horizontal plane, so that inlet pipe 11 is connected with the bottom conical surface of purification tower 1 horizontally, and is communicated with tangent of the bottom conical surface of purification tower 1, so that gas flow enters along tangent when entering purification tower 1, which is convenient for gas flow to form annular and enter purification tower 1, so that gas flow flows horizontally and is discharged, instead of vertically upward, to avoid that gas quickly passes through purification tower 1, but horizontally along purification tower 1 at high speed, not only smooth gas flow, but also dispersed uniformly, which helps to treat tail gas.

[0039] Exhaust pipe 12 is arranged at the top of purification tower 1, and fan 14 is connected to the rear end of exhaust pipe 12;

[0040] Separation net 2 is arranged in the interior of purification tower 1, and the bottom of separation net 2 is upper large and lower small conical funnel structure, and purification tower 1 is divided into independent cavities that are communicated with each other by separation net 2;

[0041] The purification tower 1 is internally provided with two layers of separation nets 2, the two layers of separation nets 2 are stacked in contact with each other, each layer of separation net 2 is provided with an exhaust filter screen 3 above, and each layer of separation net 2 has the same structure; a feeding pipe 23 is arranged at the height position between each separation net 2 and the exhaust filter screen 3, and each feeding pipe 23 is individually communicated with the outside of the purification tower 1;

[0042] And the center of the separation net 2 is also provided with a discharge valve 21 and a discharge pipe 22, and a feeding pipe 23 is arranged at the height position between each separation net 2 and the exhaust filter screen 3, so that the separation net 2 below can be used to put the purification agent, and the purification tower 1 forms a double-layer purification agent filtering effect, which can also form a double-layer purification purpose for the tail gas;

[0043] The purification agent laid on the upper separation net 2 is activated carbon particles, and the purification agent laid on the lower separation net 2 is calcium oxide particles, which is convenient for multi-layer filtration, ensures complete tail gas treatment, and avoids environmental pollution. It has adsorption effect and chemical reaction with organic acid, ensures double effect, double different purification methods and process, and better purification effect.

[0044] The separation net 2 is covered with a purification agent, the lowest part of the separation net 2 is connected with the discharge pipe 22, the discharge pipe 22 is inclinedly arranged in the purification tower 1, the outlet end of the discharge pipe 22 penetrates and extends out of the purification tower 1, the discharge valve 21 is arranged at the outlet end of the discharge pipe 22, the discharge pipe 22 is inclinedly arranged, the outlet end of the discharge pipe 22 is lower than the inlet end, and the discharge pipe 22 is below the connected separation net 2;

[0045] The inclination angle between the discharge pipe 22 and the horizontal plane is between 30-45°, such inclination design can conveniently discharge the purification agent out of the purification tower 1 through the discharge pipe 22, achieve the effect of replacing the purification agent, without additional operation, and the discharge valve 21 can be controlled, the discharge valve 21 is directly arranged at the outlet end of the discharge pipe 22, that is, arranged outside the purification tower 1, which is easier and more convenient to operate, and will not be affected by the reaction of the tail gas and the purification agent.

[0046] The side wall of the purification tower 1 is also provided with a feeding pipe 23, the inlet of the feeding pipe 23 and the outlet of the discharge pipe 22 are provided with valves; it is convenient to ensure the airtightness of the inside of the purification tower 1 when not feeding, and avoid tail gas leakage.

[0047] The feeding pipe 23 communicates the inner cavity of the purification tower 1 from outside to inside, and the feeding pipe 23 is above the separation net 2;

[0048] The exhaust filter screen 3 is a filter screen, the exhaust filter screen 3 is blocked above the separation net 2, and the feeding pipe 23 is arranged on the side wall of the purification tower 1 between the separation net 2 and the exhaust filter screen 3; through the position of the feeding pipe 23, the feeding pipe 23 can be conveniently used to feed above the separation net 2.

[0049] The flow guide cover plate 4 is a flat plate, a flow guide hole 41 is formed in the center of the flow guide cover plate 4, the flow guide hole 41 is in sealed communication with the exhaust pipe 12, and a flow blocking plate 43 is further arranged below the flow guide cover plate 4; the flow blocking plate 43 is a complete circular flat plate; a plurality of flow distribution plates 42 are vertically arranged at the bottom of the flow guide cover plate 4 in a uniform manner; the flow blocking plate 43 is stably hung below the flow guide cover plate 4 through the flow distribution plates 42; the plurality of flow distribution plates 42, the flow guide cover plate 4 and the flow blocking plate 43 form a plurality of airflow channels which are of the same size and are mutually isolated; the exhaust pipe 12 is in communication with the inner cavity of the purification tower 1 through the flow guide hole 41 and the plurality of mutually isolated airflow channels;

[0050] The exhaust filter screen 3 is not in contact with the flow blocking plate 43 below.

[0051] The flow guide cover plate 4 is not in contact with the flow blocking plate 43;

[0052] The flow blocking plate 43 blocks the flow guide hole 41 below; the airflow channel formed by the flow distribution plate 42, the flow guide cover plate 4 and the flow blocking plate 43 is a fan-shaped channel, and the airflow channel is horizontally communicated with the flow guide hole 21 in the inside-out direction; the tail gas is dispersed from outside to inside through the airflow channel, and flows from outside to inside at the same time, so that the tail gas is uniformly dispersed and flows out, so that the mechanical energy of the tail gas is fully purified.

[0053] In use, the air inlet pipe 11 supplies air to the purification tower 1 in the horizontal direction, so that transverse airflow is generated during the upward movement of the tail gas, a surrounding flow direction is formed, and the airflow continues to rise upward through the separation net 2; the separation net 2 has two layers, the separation net 2 is fully covered with a purification agent, and both physical adsorbents and chemical reaction purification agents are laid, so that the tail gas can be effectively treated.

[0054] The tail gas flows along the channel of the flow distribution plate 42 to the center of the inside, enters the exhaust pipe 12 through the flow guide hole 41, and is finally discharged from the purification tower 1, so that the purification effect is achieved.

[0055] The calcium oxide laid on the lower separation net 2 reacts with organic acid to produce water, which drips downward along the drain valve 13 and flows out, so that the design is more reasonable and the liquid discharge is easy.

[0056] When the purification agent on the separation net 2 gradually loses its effectiveness, the discharge valve 21 is first opened to discharge all the purification agent on the separation net 2; the purification agent flows along the funnel-shaped separation net 2 and is discharged through the inclined discharge pipe 22; then the discharge valve 21 is closed, and new purification agent is fed from the feed pipe 23; the door of the purification tower 1 does not need to be opened, and the separation net 2 does not need to be disassembled and replaced; both the double-layer separation net 2 can be replaced in this way; the new purification agent needs to fill the entire outer edge of the separation net 2 to ensure that the entire cross section of the purification tower 1 is blocked, so that the tail gas can be effectively treated.

[0057] The device is particularly designed for the tail gas of microbial fermentation liquor, the tail gas of microbial fermentation liquor contains organic acid, the acid tail gas is difficult to handle, especially electronic equipment, corrosion is formed, and no electronic product is used in the whole process of the device, and no complex device is used, only simple valves and filter screens, and the use is more reliable.

[0058] Although the specific embodiments of the present application are described above, those skilled in the art should understand that the specific examples described are only illustrative, not for limiting the scope of the present application, and equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present application should be covered within the scope of the claims of the present application.

Claims

1. A device for treating a fermentation broth spray drying tail gas, characterized in that, The utility model relates to a purification tower, a screen, an exhaust filter screen and a guide cover plate, and the purification tower is closed cavity, the bottom of the purification tower is the conical funnel structure of big size small, the center of the conical bottom of the purification tower is provided with the drain valve (13), the conical surface of the bottom of the purification tower is also connected with the air inlet pipe (11), the air inlet pipe (11) is connected with the outer connection tail gas pipeline, The top of the purification tower (1) is provided with an exhaust pipe (12), and the rear end of the exhaust pipe (12) is connected with a fan (14). The purification tower (1) is provided with a screen (2) inside, the screen (2) is the conical funnel structure of big size small, the purification tower (1) is divided into independent cavities that are mutually ventilated through the screen (2), The screen (2) is covered with a purification agent, the lowest part of the screen (2) is connected with a discharge pipe (22), the discharge pipe (22) is inclinedly arranged inside the purification tower (1), the outlet end of the discharge pipe (22) penetrates and extends outside the purification tower (1), the outlet end of the discharge pipe (22) is provided with a discharge valve (21), the discharge pipe (22) is inclinedly arranged, the height position of the outlet end of the discharge pipe (22) is lower than that of the inlet end, and the discharge pipe (22) is below the screen (2) connected therewith. The side wall of the purification tower (1) is also provided with a feed pipe (23), the feed pipe (23) communicates with the inner cavity of the purification tower (1) from outside to inside, and the feed pipe (23) is above the screen (2). The exhaust filter screen (3) is a filter screen, the exhaust filter screen (3) is blocked above the screen (2), and the feed pipe (23) is arranged on the side wall of the purification tower (1) between the screen (2) and the exhaust filter screen (3). The guide cover plate (4) is a flat plate, a guide hole (41) is formed in the center of the guide cover plate (4), the guide hole (41) is in sealed communication with the exhaust pipe (12), a flow baffle (43) is further arranged below the guide cover plate (4), the flow baffle (43) is a complete circular flat plate, a plurality of shunt plates (42) are vertically arranged on the bottom of the guide cover plate (4), the flow baffle (43) is stably hung below the guide cover plate (4) through the shunt plates (42), the plurality of shunt plates (42), the guide cover plate (4) and the flow baffle (43) form a plurality of airflow channels that are the same in size and isolated from each other, and the exhaust pipe (12) is in communication with the inner cavity of the purification tower (1) via the guide hole (41) and the plurality of airflow channels that are isolated from each other. The exhaust filter screen (3) is not in contact with the flow baffle (43) directly below. Two layers of screens (2) are arranged inside the purification tower (1), the two layers of screens (2) are arranged in an upper and lower overlapping mode without being in contact with each other, an exhaust filter screen (3) is arranged above each layer of screens (2), and each layer of screens (2) has the same structure; a feed pipe (23) is arranged at a height position between each screen (2) and the exhaust filter screen (3). ​ 2. The apparatus for treating the tail gas of the spray drying of the fermentation broth according to claim 1, characterized in that: ​ The purification agent laid on the upper layer of the said screen (2) is activated carbon particles, and the purification agent laid on the lower layer of the said screen (2) is calcium oxide particles.

3. The device for treating the tail gas of the spray drying of the fermentation broth according to claim 1, characterized in that: The said air inlet pipe (11) is a bend pipe, and the said air inlet pipe (11) is horizontally butted on the conical side wall of the purification tower (1).

4. The device for treating the tail gas of the spray drying of the fermentation broth according to claim 1, characterized in that: The said flow guide cover plate (4) is not in contact with the flow baffle (43); The said flow baffle (43) blocks right below the flow guide hole (41), the said flow distribution plate (42) and the flow guide cover plate (4) and the flow baffle (43) form a fan-shaped flow channel, and the said flow channel horizontally communicates with the flow guide hole (41) in the inside-outside direction.

5. The apparatus for treating the exhaust gas of a spray drying process of a fermentation broth according to claim 2, characterized in that The said feeding pipe (23) is also provided with a valve at the inlet thereof; The said discharging pipe (22) is inclined to the horizontal plane at an angle of 30-45°.

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