A device for purifying and pretreating distiller's tail gas

Abstract

The utility model relates to tail gas treatment technical field especially, relates to a kind of distiller's grains tail gas purification pretreatment device.The utility model provides such a kind of distiller's grains tail gas purification pretreatment device, including collection tower, connecting frame, exhaust pipe, fan and air pipe, collection tower top is fixedly connected with connecting frame, connecting frame top is connected with exhaust pipe, fan is installed in the upper portion in connecting frame, air pipe is connected and is communicated with the left side of collection tower, air pipe is provided with screw thread at one end away from collection tower.By synchronously starting water pump, cold water is pumped into flow guide pipe, flow guide pipe extends upward and penetrates into high-temperature air pipe, the heat in the high-temperature tail gas outside the pipe is absorbed by the cold water flowing through this section through the pipe wall, the heated water after preheating flows out from the top end of flow guide pipe, and is transported to the external process system (such as fermentation raw material preheating device) through the delivery pipe, and is used as a preheating medium for subsequent production processes, thereby realizing cascade utilization of energy and reducing overall energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, and in particular to a pretreatment device for purifying and treating distillery waste exhaust gas. Background Technology

[0002] Distillers' grains are a major byproduct of the fermentation industry, including the production of spirits and alcohol. During storage, transportation, and processing, they release large amounts of high-temperature, high-humidity, dusty exhaust gases with a strong odor. These exhaust gases typically contain alcohols, organic acids, esters, sulfides, and volatile organic compounds (VOCs). If emitted directly without treatment, they not only cause environmental pollution but may also harm the health of operators.

[0003] Currently, the common treatment method for this type of exhaust gas often adopts a combination of "spraying + adsorption": the exhaust gas first enters a spray tower, where it is cooled, dusted, and some soluble pollutants are removed through atomized spraying of water or chemical agents; then it enters an activated carbon adsorption unit for deep purification of residual odor substances and VOCs. Although this process has a certain effect on improving emission quality, it has obvious energy utilization defects: the large amount of heat energy carried by the high-temperature exhaust gas is absorbed by the cooling water during the spraying process and is usually not effectively recovered, ultimately being discharged into the environment as waste heat with wastewater or exhaust gas, resulting in energy waste and failing to meet the current industrial requirements for energy conservation, emission reduction, and green production.

[0004] Therefore, a pretreatment device for purifying and treating distillery waste gas with waste heat recovery function is needed. Utility Model Content

[0005] In order to overcome the shortcomings of existing technologies where the large amount of heat energy carried by high-temperature exhaust gas is absorbed by cooling water during the spraying process and is usually not effectively recovered, it is eventually discharged into the environment as waste heat with wastewater or exhaust gas, resulting in energy waste and failing to meet the current industrial requirements for energy conservation, consumption reduction and green production, the purpose of this utility model is to provide a pretreatment device for purifying distillery waste gas with waste heat recovery function.

[0006] Technical Solution: A pretreatment device for purifying distillery waste gas includes a collecting tower, a connecting frame, an exhaust pipe, a fan, an inlet pipe, a drain pipe, a valve, a spray pipe, and a purification structure. The connecting frame is fixedly connected to the top of the collecting tower, and the exhaust pipe is connected to the top of the connecting frame. A fan is installed in the upper part of the connecting frame. An inlet pipe is connected and communicated to the left side of the collecting tower. The end of the inlet pipe away from the collecting tower is threaded. A drain pipe is connected to the lower right side of the collecting tower, and a valve is installed on the drain pipe. A spray pipe is installed in the upper part of the collecting tower. The purification structure is used to perform deep adsorption purification on the gas after spraying. The device also includes a water pump, a fixing plate, a guide pipe, and a conveying pipe. A water pump is installed in front of the collecting tower. The outlet pipe of the water pump is connected to the guide pipe. The guide pipe extends upward and passes into the interior of the inlet pipe. A conveying pipe is connected to the top of the guide pipe. The conveying pipe can be connected to an external process system. A fixing plate is installed on the left side of the collecting tower to fix the conveying pipe.

[0007] Furthermore, it is particularly preferred that the purification structure includes a placement frame, a limiting plate, activated carbon, and a pull rod. The placement frame is slidably installed inside the connecting frame, and the placement frame is filled with activated carbon. The limiting plate is snapped into the right side of the connecting frame, and the limiting plate abuts against the placement frame. The pull rod is fixedly connected to the right side of the limiting plate.

[0008] Furthermore, it is particularly preferred that the filter also includes a filter cartridge, a filter plate, a sponge block, and a handle. The filter cartridge is threadedly connected to the lower end of the air intake pipe, the filter plate is detachably installed at the lower part of the filter cartridge, the sponge block is installed inside the filter cartridge, and the handle is fixedly connected to the outside of the filter cartridge.

[0009] Furthermore, it is particularly preferred that the spray pipe also includes a connector, which is connected to and communicates with the spray pipe.

[0010] In addition, it is particularly preferred that the frame also includes rubber plates, with rubber plates provided on both the front and rear sides of the connecting frame.

[0011] In addition, it is particularly preferred that a protective shell is also included, with the protective shell located on the left side of the collecting tower, which shields the water pump.

[0012] Compared with the prior art, this utility model provides a pretreatment device for purifying distillery waste gas, which has the following beneficial effects: 1. By synchronously starting the water pump, cold water is pumped into the guide pipe. The guide pipe extends upward and penetrates into the high-temperature air inlet pipe. The cold water flowing through this section absorbs the heat from the high-temperature waste gas outside the pipe through the pipe wall, thereby raising its own temperature. The preheated hot water flows out from the top of the guide pipe and is transported to the external process system (such as the fermentation raw material preheating device) through the conveying pipe. It is used as a preheating medium for subsequent production processes, thereby realizing the cascade utilization of energy and reducing the overall energy consumption.

[0013] 2. The exhaust gas passes through the filter cartridge. The filter plates and sponge blocks arranged in sequence inside the filter cartridge can intercept and adsorb larger particles carried in the exhaust gas, thereby effectively preventing these impurities from entering the subsequent system and avoiding blockage or equipment wear. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a partial sectional view of the components of this utility model, including the collection tower, connecting frame, and spray pipe.

[0016] Figure 3 This is a partial cross-sectional view of the placement frame, limiting plate, and activated carbon components of this utility model.

[0017] Figure 4 This is a partial sectional view of the water pump, guide pipe, and delivery pipe components of this utility model.

[0018] Figure 5 This is a partial sectional view of the filter cartridge, sponge block, and handle of this utility model.

[0019] The above-mentioned attached drawings include the following reference numerals: 1. Collection tower, 2. Connecting frame, 201. Exhaust pipe, 3. Fan, 4. Inlet pipe, 5. Drain pipe, 6. Valve, 7. Spray pipe, 8. Connector, 9. Placement frame, 10. Limiting plate, 11. Activated carbon, 12. Tie rod, 13. Rubber plate, 14. Water pump, 15. Fixing plate, 16. Guide pipe, 17. Conveying pipe, 18. Filter cylinder, 19. Filter plate, 20. Sponge block, 21. Handle, 22. Protective shell. Detailed Implementation

[0020] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0021] Example 1: A pretreatment device for purifying distiller's grains exhaust gas. Please refer to [link / reference]. Figures 1-5The system includes a collection tower 1, a connecting frame 2, an exhaust pipe 201, a fan 3, an air inlet pipe 4, a drain pipe 5, a valve 6, a spray pipe 7, and a purification structure. The connecting frame 2 is fixedly connected to the top of the collection tower 1, and the exhaust pipe 201 is connected to the top of the connecting frame 2. The fan 3 is installed in the upper part of the connecting frame 2. The air inlet pipe 4 is connected and connected to the left side of the collection tower 1. The end of the air inlet pipe 4 away from the collection tower 1 is threaded. The drain pipe 5 is connected to the lower right side of the collection tower 1, and the valve 6 is installed on the drain pipe 5. A spray pipe 7 is installed at the top of the collection tower 1. The purification structure is used for deep adsorption purification of the gas after spraying. The purification structure includes a placement frame 9, a limiting plate 10, activated carbon 11, and a pull rod 12. The placement frame 9 is slidably installed inside the connecting frame 2. The placement frame 9 is filled with activated carbon 11. The limiting plate 10 is snapped onto the right side of the connecting frame 2, and the limiting plate 10 abuts against the placement frame 9. The pull rod 12 is fixedly connected to the right side of the limiting plate 10. When the activated carbon 11 is saturated, the pull rod 12 is gripped tightly. 2. Pull the limiting plate 10 to release the limitation on the placement frame 9, and the placement frame 9 can be taken out to replace the activated carbon 11. It also includes a water pump 14, a fixing plate 15, a guide pipe 16 and a delivery pipe 17. The water pump 14 is installed on the front side of the collecting tower 1. The water outlet pipe of the water pump 14 is connected to the guide pipe 16. The guide pipe 16 extends upward and passes into the air inlet pipe 4. The top of the guide pipe 16 is connected to the delivery pipe 17. The delivery pipe 17 can be connected to the external process system. The fixing plate 15 is set on the left side of the collecting tower 1. The fixing plate 15 is used to fix the delivery pipe 17 to ensure the reliability of the pipeline connection. The spray pipe 7 is connected to and connected to the connector 8, which facilitates quick connection to the external infusion pipeline. Rubber plates 13 are set on both the front and rear sides of the connecting frame 2. The rubber plates 13 contact and cooperate with the limiting plate 10 to play a sealing and buffering role, prevent gas leakage and reduce vibration noise. The left side of the collecting tower 1 is set with a protective shell 22. The protective shell 22 covers the water pump 14 and plays a role in dust prevention, waterproofing and safety protection.

[0022] When this device is needed, the high-temperature distiller's grains exhaust gas first enters the device through the inlet pipe 4. The fan 3 operates continuously, creating a stable negative pressure within the system and guiding the exhaust gas along a predetermined path. After entering the collecting tower 1, the spray pipe 7 sprays purifying agents or water mist onto the exhaust gas, ensuring full contact and achieving cooling and preliminary chemical purification. The gas, after being sprayed, rises into the connecting frame 2 and flows through the placement frame 9. The activated carbon 11 filled in the placement frame 9 can deeply adsorb and remove residual odor molecules and volatile organic pollutants in the exhaust gas. Finally, the purified gas is discharged from the system through the exhaust pipe 201. The drain pipe 5 and valve 6 at the bottom are used to periodically discharge the wastewater generated by the spraying. During this process, the water pump 14 is started simultaneously to pump cold water into the guide pipe 16. The guide pipe 16 extends upward and penetrates into the high-temperature air inlet pipe 4 to form a high-efficiency heat exchanger. The cold water flowing through this section absorbs heat from the high-temperature exhaust gas outside the pipe through the pipe wall, thereby raising its own temperature. The preheated hot water flows out from the top of the guide pipe 16 and is transported to the external process system (such as the fermentation raw material preheating device) through the conveying pipe 17. It is used as a preheating medium for subsequent production processes, thereby realizing the cascade utilization of energy and reducing overall energy consumption.

[0023] Example 2: Based on Example 1, please refer to... Figure 1 and Figure 5 It also includes a filter cartridge 18, a filter plate 19, a sponge block 20 and a handle 21. The lower end of the air inlet pipe 4 is threadedly connected to the filter cartridge 18. The filter plate 19 is detachably installed at the lower part of the filter cartridge 18 to facilitate the replacement of the sponge block 20. The sponge block 20 is installed inside the filter cartridge 18. The handle 21 is fixedly connected to the outside of the filter cartridge 18 to facilitate the movement of the filter cartridge 18.

[0024] When the exhaust gas enters the intake pipe 4, it first passes through the filter cartridge 18. The filter plate 19 and sponge block 20 arranged in sequence inside the filter cartridge 18 can intercept and adsorb larger particles carried in the exhaust gas, thereby effectively preventing these impurities from entering the subsequent system and avoiding blockage or equipment wear.

[0025] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A pretreatment device for purifying distillery waste gas, comprising a collection tower (1), a connecting frame (2), an exhaust pipe (201), a fan (3), an inlet pipe (4), a drain pipe (5), a valve (6), a spray pipe (7), and a purification structure. The top of the collection tower (1) is fixedly connected to the connecting frame (2), the top of the connecting frame (2) is connected to the exhaust pipe (201), the upper part of the connecting frame (2) is equipped with a fan (3), the left side of the collection tower (1) is connected to and communicates with the inlet pipe (4), the end of the inlet pipe (4) away from the collection tower (1) is provided with a thread, the lower right side of the collection tower (1) is connected to the drain pipe (5), the drain pipe (5) is provided with a valve (6), the upper part of the collection tower (1) is provided with a spray pipe (7), and the purification structure is used to perform deep adsorption purification on the gas after spray treatment. Its characteristic is that... It also includes a water pump (14), a fixing plate (15), a guide pipe (16) and a delivery pipe (17). A water pump (14) is installed on the front side of the collecting tower (1). The water outlet pipe of the water pump (14) is connected to the guide pipe (16). The guide pipe (16) extends upward and enters the air inlet pipe (4). The top of the guide pipe (16) is connected to the delivery pipe (17). The delivery pipe (17) can be connected to an external process system. A fixing plate (15) is set on the left side of the collecting tower (1). The fixing plate (15) is used to fix the delivery pipe (17).

2. The pretreatment device for purifying distiller's grains exhaust gas as described in claim 1, characterized in that, The purification structure includes a placement frame (9), a limiting plate (10), activated carbon (11) and a pull rod (12). The placement frame (9) is slidably installed inside the connecting frame (2). The placement frame (9) is filled with activated carbon (11). The limiting plate (10) is snapped into the right side of the connecting frame (2). The limiting plate (10) abuts against the placement frame (9). The pull rod (12) is fixedly connected to the right side of the limiting plate (10).

3. The pretreatment device for purifying distiller's grains exhaust gas as described in claim 2, characterized in that, It also includes a filter cartridge (18), a filter plate (19), a sponge block (20) and a handle (21). The lower end of the air inlet pipe (4) is threaded with a filter cartridge (18). The filter plate (19) is detachably installed at the lower part of the filter cartridge (18). The sponge block (20) is installed inside the filter cartridge (18). The handle (21) is fixedly connected to the outside of the filter cartridge (18).

4. The pretreatment device for purifying distiller's grains exhaust gas as described in claim 3, characterized in that, It also includes a connector (8), which is connected to and communicates with the spray pipe (7).

5. The pretreatment device for purifying distiller's grains exhaust gas as described in claim 4, characterized in that, It also includes a rubber plate (13), and the front and rear sides of the connecting frame (2) are provided with rubber plates (13).

6. The pretreatment device for purifying distiller's grains exhaust gas as described in claim 5, characterized in that, It also includes a protective shell (22), which is provided on the left side of the collection tower (1) and shields the water pump (14).

Images