Tobacco production line waste gas impurity and odor removal unit

Abstract

This utility model provides a unit for removing impurities and odors from exhaust gas in a tobacco production line, including a support frame, several high-speed swirling jet exhaust gas treatment units, an exhaust gas inlet channel, a clean gas exhaust channel, a primary water tank, a secondary water tank, and a tertiary water tank. Two rows of high-speed swirling jet exhaust gas treatment units are respectively arranged on both sides of the exhaust gas inlet channel. The exhaust port of each high-speed swirling jet exhaust gas treatment unit is directly connected to the clean gas exhaust channel. Several primary water washing nozzles for spraying recycled water and a primary drain outlet connected to the primary water tank are distributed inside the exhaust gas inlet channel. Secondary water washing nozzles and a secondary drain outlet connected to the secondary water tank are arranged at the front section of the airflow path of each high-speed swirling jet exhaust gas treatment unit. Several tertiary water washing nozzles and a tertiary drain outlet connected to the tertiary water tank are arranged in the middle section of the airflow path of each high-speed swirling jet exhaust gas treatment unit. This unit has the advantages of being suitable for large-scale application, significantly increasing processing capacity, and solving the comprehensive problems of impurity removal and odor removal.

Description

Technical Field

[0001] This utility model relates to a tobacco production line, specifically, to a unit for removing impurities and odors from exhaust gas in a tobacco production line. Background Technology

[0002] In a tobacco production line, there are multiple processes that generate waste gas, such as flavoring, rehydration, tobacco processing, and drying. Because tobacco contains a large amount of oil and volatile substances, and generates a large amount of debris during processing, these fine mixtures are mixed with the airflow and then discharged for treatment.

[0003] The previous method was to use filter cartridges for filtration. Due to the presence of grease, the filter cartridges were prone to clogging and had to be replaced frequently, which affected the production schedule and increased costs.

[0004] With technological advancements, equipment utilizing water mist and high-speed centrifugation for waste gas treatment has been introduced and validated in various stages, demonstrating excellent performance. The solution is as follows:

[0005] Applications with application number CN202111383958.X, entitled "A centrifugal purification module and a shredder purification device", and application number CN202122213812.2, entitled "A scheme for a negative pressure air conditioning exhaust gas purification device", play different roles in different processes.

[0006] As this solution is increasingly applied to tobacco production lines and the scale of operations grows, the flexibility advantage of individual independent equipment has been lost. The increased scale has brought management difficulties and efficiency defects. Therefore, centralized processing equipment has become the preferred option.

[0007] When treated centrally, the composition of the exhaust gas varies at each stage, and the mixture may produce new odors. As a result, the impurities and odor components in the exhaust gas need to be removed, which increases the complexity. How to reasonably solve these problems is an urgent direction for breakthrough. In order to solve the above problems, people have been seeking an ideal technical solution. Utility Model Content

[0008] The purpose of this invention is to address the shortcomings of existing technologies by providing a waste gas purification and odor removal unit for tobacco production lines that is suitable for large-scale applications, significantly increases processing capacity, and solves the comprehensive problems of impurity removal and odor removal.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is: a tobacco production line exhaust gas impurity and odor removal unit, including a support frame and several high-speed swirling jet exhaust gas treatment units, exhaust gas inlet channels, clean gas exhaust channels, a primary water tank, a secondary water tank and a tertiary water tank respectively installed on the support frame;

[0010] Two rows of high-speed swirling jet exhaust gas treatment units are respectively arranged on both sides of the exhaust gas inlet channel, and the air inlet of each high-speed swirling jet exhaust gas treatment unit is directly connected to the exhaust gas inlet channel.

[0011] The exhaust ports of each of the high-speed swirling jet exhaust gas treatment units are directly connected to the clean gas exhaust channel;

[0012] The exhaust gas inlet channel is internally distributed with several primary water washing nozzles for spraying recycled water. A primary drain outlet is provided at the bottom of the exhaust gas inlet channel. The primary drain outlet is connected to a primary water tank. Most of the water generated by the primary water washing nozzles is discharged from the primary drain outlet.

[0013] The high-speed swirling jet exhaust gas treatment unit is equipped with several secondary water washing nozzles and a secondary drain outlet at the front of the airflow path. The secondary drain outlet is connected to the secondary water tank, and most of the water generated by the secondary water washing nozzles is discharged from the secondary drain outlet.

[0014] The high-speed swirling jet exhaust gas treatment unit has several three-stage water washing nozzles and a three-stage drain outlet in the middle section of the airflow path. The three-stage drain outlet is connected to a three-stage water tank, and most of the water generated by the three-stage water washing nozzles is discharged from the three-stage drain outlet.

[0015] Based on the above, the high-speed swirling jet exhaust gas treatment unit includes an inner cylinder, an outer cylinder, and a centrifugal fan assembly. The inner cylinder and the outer cylinder are sleeved together. The air inlet is located at the upper part of the outer cylinder, and the exhaust port is located at the top of the inner cylinder. The centrifugal fan assembly is installed inside the inner cylinder to form an airflow channel that enters from the outer cylinder, passes through the interlayer between the outer cylinder and the inner cylinder, enters the inner cylinder from the bottom, and causes the airflow to swirl upwards and be discharged. The secondary water washing nozzle is installed in the interlayer space between the inner cylinder and the outer cylinder, and the secondary drain port is located at the bottom of the outer cylinder.

[0016] Based on the above, the bottom end of the inner cylinder is provided with an annular conical surface that protrudes upward from the inner wall of the inner cylinder. The central hole of the annular conical surface is an air inlet. Above the annular conical surface, a flow-blocking guide with a projected area covering the air inlet is provided. The lower end face of the flow-blocking guide is a conical surface used to redirect the blocked liquid back down and through the air inlet to reach the secondary drain outlet.

[0017] Based on the above, the upper end of the obstruction and guide component is also a conical surface, the three-stage water washing nozzle is installed in the space above the obstruction and guide component, the upper end of the obstruction and guide component and the inner wall of the inner cylinder are used to guide the liquid in the inner cylinder to the space between the annular conical surface and the inner wall of the inner cylinder, and the three-stage drain outlet is set in the area corresponding to the annular conical surface and the inner wall of the inner cylinder.

[0018] Based on the above, the primary water washing nozzle is connected to purified water.

[0019] Based on the above, the secondary water washing nozzle is connected to the first deodorizing water source.

[0020] Based on the above, the three-stage water washing nozzle is connected to a second deodorizing water source, and the solution composition of the first deodorizing water source and the second deodorizing water source is different.

[0021] Based on the above, the primary water tank is a water tank with an integrated filter assembly, and the primary water tank is equipped with a circulating water interface, which supplies water to the primary water washing nozzles through a power pump.

[0022] Based on the above, both the secondary and tertiary water tanks are equipped with circulating water interfaces, and water is supplied to the secondary and tertiary water washing nozzles respectively through power pumps.

[0023] This utility model has substantial features and progress compared to the prior art. Specifically, this utility model utilizes the integration of the unit and the matching use of the water tank to form a comprehensive unit product, which is matched with a set of tobacco production lines. It can simultaneously treat the comprehensive waste gas generated in each production stage of the production line, that is, to remove physical particulate matter in the waste gas and to remove odor components in the waste gas. The wastewater after removal is centrally treated. Compared with the previous separate purification equipment, it has the advantages of scale and efficiency, and is more convenient to manage. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the waste gas removal and odor removal unit in the tobacco production line of this utility model.

[0025] Figure 2 This is one of the three-dimensional structural schematic diagrams of the waste gas removal and odor removal unit in the tobacco production line of this utility model.

[0026] Figure 3 This is the second schematic diagram of the overall structure of the waste gas removal and odor removal unit in the tobacco production line of this utility model.

[0027] Figure 4 This is a schematic diagram of the structure of a single high-speed swirling jet exhaust gas treatment unit in this utility model.

[0028] In the diagram: 1. Support frame; 2. High-speed swirling jet exhaust gas treatment unit; 3. Exhaust gas inlet channel; 4. Clean gas exhaust channel; 5. Primary water tank; 6. Secondary water tank; 7. Tertiary water tank; 11. Primary water washing nozzle; 12. Secondary water washing nozzle; 13. Tertiary water washing nozzle; 21. Inner cylinder; 22. Outer cylinder; 23. Air inlet; 24. Exhaust outlet; 25. Annular conical surface; 26. Baffle guide; 31. Primary drain outlet; 32. Secondary drain outlet; 33. Tertiary drain outlet. Detailed Implementation

[0029] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0030] like Figure 1 As shown, a tobacco production line exhaust gas purification and odor removal unit includes a support frame 1 and several high-speed swirling jet exhaust gas treatment units 2, exhaust gas inlet channels 3, clean gas exhaust channels 4, a primary water tank 5, a secondary water tank 6, and a tertiary water tank 7, all mounted on the support frame 1.

[0031] Two rows of high-speed swirling jet exhaust gas treatment units 2 are respectively arranged on both sides of the exhaust gas inlet channel 3. The air inlet of each high-speed swirling jet exhaust gas treatment unit 2 is directly connected to the exhaust gas inlet channel 3. The exhaust gas inlet channel 3 is used to connect the exhaust gas generated by each production stage of the tobacco production line, such as the flavoring stage, the rehumidification stage, and the drying stage. The exhaust gas contains fine particulate matter, flocculent matter, dust, aerosols and a portion of volatile gases.

[0032] The exhaust ports of each of the high-speed swirling jet exhaust gas treatment units 2 are directly connected to the clean gas exhaust channel 4, which is used to uniformly discharge the treated clean air into the clean gas exhaust channel 4, and then uniformly discharge it to the outside.

[0033] The exhaust gas inlet channel 3 is internally distributed with several primary water washing nozzles 11 for spraying recycled water. A primary drain outlet 31 is provided at the bottom of the exhaust gas inlet channel. The primary drain outlet 31 is connected to the primary water tank 5. Most of the water generated by the primary water washing nozzles 11 is discharged from the primary drain outlet 31. A small amount of atomized water will enter the subsequent flow channel with the airflow. Therefore, the description that most of the water is discharged from the primary drain outlet is more accurate.

[0034] The high-speed swirling jet exhaust gas treatment unit 2 has several secondary water washing nozzles 12 and a secondary drain outlet 32 ​​at the front of the airflow path. The secondary drain outlet 32 ​​is connected to the secondary water tank 6. Most of the water generated by the secondary water washing nozzles 12 is discharged from the secondary drain outlet 32. Similar to the primary drain outlet, a small amount of atomized water will enter the subsequent flow channel with the airflow.

[0035] Specifically, in this embodiment, the high-speed swirling jet exhaust gas treatment unit 2 includes an inner cylinder 21, an outer cylinder 22, and a centrifugal fan assembly (not shown in the figure). The inner cylinder 21 and the outer cylinder 22 are sleeved together. The air inlet 23 is located on the upper part of the outer cylinder 22, and the exhaust port 24 is located at the top of the inner cylinder 21. The centrifugal fan assembly is installed inside the inner cylinder 21 to form an airflow channel that enters from the outer cylinder 22, passes through the interlayer between the outer cylinder 22 and the inner cylinder 21, enters the inner cylinder 21 from the bottom, and causes the airflow to swirl upwards and be discharged. The airflow channel is designed with a zigzag method to form a longer path length in a small space. The secondary water washing nozzle 12 is installed in the interlayer space between the inner cylinder 21 and the outer cylinder 22. The secondary drain outlet 32 ​​is provided at the bottom of the outer cylinder 22. In this embodiment, the bottom of the outer cylinder 22 is set in a bucket shape to collect water, and the secondary drain outlet 32 ​​is located at the lowest point.

[0036] The bottom end of the inner cylinder 21 is provided with an annular conical surface 25 that protrudes upward from the inner wall of the inner cylinder. The central hole of the annular conical surface 25 is an air inlet. Above the annular conical surface 25, a blocking guide 26 with a projected area covering the air inlet is provided. The lower end face of the blocking guide 26 is a conical surface used to redirect the blocked liquid back down and through the air inlet to reach the secondary drain outlet 32.

[0037] The purpose is to isolate the water spray from the secondary water washing nozzle 12 and the tertiary water washing nozzle 13 to prevent them from merging.

[0038] The upper end of the flow-blocking guide 26 is also a conical surface. The three-stage water washing nozzle 13 is installed in the space above the flow-blocking guide 26. The upper end of the flow-blocking guide 26 and the inner wall of the inner cylinder 21 are used to guide the liquid in the inner cylinder 21 to the space between the annular conical surface 25 and the inner wall of the inner cylinder 21. The three-stage drain outlet 33 is located in the area corresponding to the annular conical surface 25 and the inner wall of the inner cylinder 21. The three-stage drain outlet 33 is connected to the three-stage water tank 7. Most of the water generated by the three-stage water washing nozzle 13 is discharged from the three-stage drain outlet 33.

[0039] Specifically, the primary water washing nozzle 11 is connected to purified water. To achieve the purpose of saving water, the primary water tank 5 is a water tank with an integrated filter component. The primary water tank 5 is equipped with a circulating water interface. The circulating water interface supplies water to the primary water washing nozzle through a power pump. Since the main purpose of the water used in this part is to make the largest particles of impurities fall off by increasing their weight, the water requirements are low. It can be continuously recycled multiple times before being discharged.

[0040] The secondary water washing nozzle 12 is connected to the first deodorizing water source, such as a solution containing hypochlorous acid, to adsorb relevant substances in the exhaust gas. However, since hypochlorous acid itself also has an odor, it needs to be further purified and deodorized by the tertiary water washing nozzle 13.

[0041] The three-stage water washing nozzle 13 is connected to the second deodorizing water source. The solution composition of the first deodorizing water source and the second deodorizing water source is different. The purified water sprayed by the three-stage water washing nozzle 13 contains components that are mainly used to remove the odors that the two-stage water washing nozzle 12 failed to remove, as well as the odors produced by hypochlorous acid itself.

[0042] Given the issue of consumption, the recycled water in the secondary water tank 6 and the tertiary water tank 7 will inevitably contain a large amount of unconsumed effective components. Therefore, both are equipped with circulating water interfaces, and water is supplied to the secondary water washing nozzle 12 and the tertiary water washing nozzle 13 respectively through power pumps, in order to achieve economy and solve the problem of water access difficulties.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A tobacco production line waste gas impurity and odor removal unit, characterized in that: It includes a support frame and several high-speed swirling jet exhaust gas treatment units, exhaust gas inlet channels, clean gas exhaust channels, primary water tank, secondary water tank and tertiary water tank, which are respectively installed on the support frame; Two rows of high-speed swirling jet exhaust gas treatment units are respectively arranged on both sides of the exhaust gas inlet channel, and the air inlet of each high-speed swirling jet exhaust gas treatment unit is directly connected to the exhaust gas inlet channel. The exhaust ports of each of the high-speed swirling jet exhaust gas treatment units are directly connected to the clean gas exhaust channel; The exhaust gas inlet channel is internally distributed with several primary water washing nozzles for spraying recycled water. A primary drain outlet is provided at the bottom of the exhaust gas inlet channel. The primary drain outlet is connected to a primary water tank. Most of the water generated by the primary water washing nozzles is discharged from the primary drain outlet. The high-speed swirling jet exhaust gas treatment unit is equipped with several secondary water washing nozzles and a secondary drain outlet at the front of the airflow path. The secondary drain outlet is connected to the secondary water tank, and most of the water generated by the secondary water washing nozzles is discharged from the secondary drain outlet. The high-speed swirling jet exhaust gas treatment unit has several three-stage water washing nozzles and a three-stage drain outlet in the middle section of the airflow path. The three-stage drain outlet is connected to a three-stage water tank, and most of the water generated by the three-stage water washing nozzles is discharged from the three-stage drain outlet.

2. The tobacco production line waste gas dedusting and deodorizing unit according to claim 1, characterized in that: The high-speed swirling jet exhaust gas treatment unit includes an inner cylinder, an outer cylinder, and a centrifugal fan assembly. The inner and outer cylinders are sleeved together. The air inlet is located at the upper part of the outer cylinder, and the exhaust port is located at the top of the inner cylinder. The centrifugal fan assembly is installed inside the inner cylinder to form an airflow channel that enters from the outer cylinder, passes through the interlayer between the outer and inner cylinders, enters the inner cylinder from the bottom, and causes the airflow to swirl upwards and be discharged. The secondary water washing nozzle is installed in the interlayer space between the inner and outer cylinders, and the secondary drain outlet is located at the bottom of the outer cylinder.

3. The tobacco production line waste gas dedusting and deodorizing unit according to claim 2, characterized in that: The bottom of the inner cylinder is provided with an annular conical surface that protrudes upward from the inner wall of the inner cylinder. The central hole of the annular conical surface is an air inlet. Above the annular conical surface, a flow-blocking guide with a projected area covering the air inlet is provided. The lower end face of the flow-blocking guide is a conical surface used to redirect the blocked liquid back down and through the air inlet to reach the secondary drain outlet.

4. The tobacco production line waste gas dedusting and deodorizing unit according to claim 3, characterized in that: The upper end of the flow-blocking guide is also a conical surface. The three-stage water washing nozzle is installed in the space above the flow-blocking guide. The upper end of the flow-blocking guide and the inner wall of the inner cylinder are used to guide the liquid in the inner cylinder to the space between the annular conical surface and the inner wall of the inner cylinder. The three-stage drain outlet is located in the area corresponding to the annular conical surface and the inner wall of the inner cylinder.

5. The tobacco production line waste gas dedusting and deodorizing unit according to claim 4, characterized in that: The primary water washing nozzle is connected to purified water.

6. The tobacco production line waste gas dedusting and deodorizing unit according to claim 5, characterized in that: The secondary water washing nozzle is connected to the first deodorizing water source.

7. The tobacco production line waste gas dedusting and deodorizing unit according to claim 6, characterized in that: The three-stage water washing nozzle is connected to a second deodorizing water source, and the solution composition of the first deodorizing water source and the second deodorizing water source is different.

8. The tobacco production line waste gas dedusting and deodorizing unit according to claim 5, characterized in that: The primary water tank is an integrated filter tank, and the primary water tank is equipped with a circulating water interface, which supplies water to the primary water washing nozzles through a power pump.

9. The tobacco production line waste gas dedusting and deodorizing unit according to claim 7, characterized in that: Both the secondary and tertiary water tanks are equipped with circulating water interfaces, and water is supplied to the secondary and tertiary water washing nozzles respectively through power pumps.

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