A pesticide intermediate waste gas treatment device

Abstract

The application provides a pesticide intermediate waste gas treatment device, which comprises a box body, a middle section area of the box body is defined as a gas flow treatment core area, an adsorption bed layer is arranged in the gas flow treatment core area, and a vertical section of the adsorption bed layer completely covers a vertical section of the gas flow treatment core area, a feeding port is arranged on a top surface of the box body and is communicated with an upper surface of the adsorption bed layer, a discharging port is arranged on a bottom surface of the box body and is communicated with a lower surface of the adsorption bed layer, and flange assemblies are respectively detachably and sealingly connected to the feeding port and the discharging port. The adsorption bed layer is arranged in the gas flow treatment core area of the box body, the feeding port and the discharging port are arranged on the top and the bottom of the adsorption bed layer, the flange assemblies are arranged, the active carbon can be quickly added by opening the feeding port, the active carbon can flow out by relying on the self weight by opening the flange of the discharging port, the active carbon can be quickly replaced, and the problem of low manual operation efficiency caused by the split structure of the active carbon adsorption box in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of pesticide intermediate waste gas treatment, and in particular to a pesticide intermediate waste gas treatment device. Background Technology

[0002] Pesticide intermediates are indispensable intermediate products in the pesticide production process. They are synthesized from chemical raw materials through chemical reactions and serve as a key medium connecting raw materials and final pesticide products. Their chemical structure directly affects the synthesis route, active ingredients, and mechanism of action of pesticides.

[0003] The exhaust gases produced during the production of pesticide intermediates are complex and significantly hazardous, mainly including volatile organic compounds (VOCs), inorganic waste gases (such as hydrogen chloride, ammonia, hydrogen sulfide, phosgene, etc.), particulate matter, and malodorous substances. These exhaust gases originate from raw material storage and transportation, chemical reactions, product refining and drying, packaging and storage, etc., and can cause considerable harm to human health and the environment. Multiple processes are required to treat the different types of harmful substances in the exhaust gases.

[0004] In the treatment of tail gas from pesticide intermediate production, traditional activated carbon adsorption boxes rely on the microporous structure and physical-chemical adsorption mechanism of activated carbon to achieve efficient VOCs interception. However, their structural design has obvious shortcomings: the existing split-type boxes use flange connections, and when replacing activated carbon, manual disassembly and overall relocation of the box are required. Then, granular carbon is filled by shoveling or suction. The whole process takes 2-4 hours per cycle, which not only leads to significant equipment downtime losses, but also causes 3%-5% tail gas leakage due to repeated disassembly and reassembly of the sealing surface. Furthermore, there is a risk of personnel injury and exposure to toxic substances when handling activated carbon packaging bags weighing more than 50 kg. Utility Model Content

[0005] The purpose of this invention is to solve the problem of low efficiency in manual operation when replacing activated carbon due to the split structure of the activated carbon adsorption box in the prior art.

[0006] To achieve the above objectives, this application proposes a pesticide intermediate waste gas treatment device, comprising: The housing, with the middle section defined as the airflow processing core area; An adsorption bed is disposed within the airflow treatment core area, and the vertical cross-section of the adsorption bed completely covers the vertical cross-section of the airflow treatment core area. The feed inlet is located on the top surface of the housing and communicates with the upper surface of the adsorption bed. The discharge port is located on the bottom surface of the box and communicates with the lower surface of the adsorption bed. The flange assembly is detachably and sealingly connected to the inlet and the outlet, respectively.

[0007] This application establishes an adsorption bed in the core area of ​​the airflow treatment chamber, with inlets and outlets corresponding to the top and bottom of the adsorption bed, and flange assemblies for both inlets and outlets. This structure allows for rapid addition of activated carbon by opening the inlet, and allows the activated carbon to flow out by gravity by opening the outlet flange, enabling rapid replacement of the activated carbon. This solves the problem of low efficiency due to manual operation when replacing activated carbon caused by the separate structure of the activated carbon adsorption chamber in the prior art.

[0008] Furthermore, in order to uniformly fill the adsorption bed with activated carbon, the vertical cross-section of the airflow treatment core area has a symmetrical V-shaped structure. The adsorption bed is filled within the space defined by the V-shaped structure, and the shape of the vertical cross-section of the adsorption bed is identical to the outline of the V-shaped cross-section of the airflow treatment core area, forming a gapless bonding structure.

[0009] Furthermore, to avoid dead zones during the addition and release of activated carbon, the feed inlet is located on the top surface of the V-shaped structure in the core airflow treatment area, and the discharge outlet is located on the bottom surface of the V-shaped structure in the core airflow treatment area.

[0010] Furthermore, a support frame is provided at the bottom of the box to raise the distance between the box and the ground, thereby increasing the suspension height of the discharge port and reserving operating space for disassembling the flange assembly.

[0011] Furthermore, the inner cavity of the discharge port is provided with a sealing end cap to facilitate the replacement of the adsorption bed.

[0012] Furthermore, in order to achieve quick assembly and disassembly of the sealing end cap, the sealing end cap includes: an end face that fits with the inner wall of the discharge port with a clearance; limiting blocks symmetrically arranged on the edge of the end face; a handle arranged on the end face; a sliding groove is provided along the axis on the inner wall of the discharge port, and a limiting groove is provided along the radial direction on the inner wall of the discharge port that connects with the end of the sliding groove.

[0013] The beneficial effects of this application are as follows: 1. This application sets up an adsorption bed in the core area of ​​the airflow treatment chamber, and provides inlet and outlet ports at the top and bottom of the adsorption bed, respectively, and equips the inlet and outlet ports with flange assemblies. With this structure, activated carbon can be quickly added by opening the inlet port, and the activated carbon can flow out by its own weight by opening the outlet flange, achieving rapid replacement of the activated carbon. This solves the problem of low efficiency in manual operation when replacing activated carbon caused by the split structure of the activated carbon adsorption box in the prior art.

[0014] 2. The top and bottom surfaces of the box in this application are V-shaped, and the inlet and outlet are located at the highest and lowest points of the box to reduce dead angles when adding and discharging activated carbon.

[0015] 3. This application not only features a flange assembly at the discharge port but also adds a conveniently detachable sealing end cap, thus constructing a double-layer sealing structure. Firstly, this significantly enhances the sealing performance of the adsorption bed. Secondly, during the discharge process, considering that the flange assembly requires the removal of multiple screws, making rapid disassembly difficult, direct removal of the flange assembly would cause activated carbon to gush out instantly, resulting in unnecessary waste. The sealing end cap effectively avoids this problem, ensuring that the activated carbon is effectively sealed within the adsorption bed before the flange assembly is removed. After the flange assembly is disassembled, ample space is left below the discharge port for arranging the collection bag. At this point, the sealing end cap can be quickly removed by simply rotating and pulling, smoothly completing the discharge process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a pesticide intermediate waste gas treatment device in an embodiment of this application; Figure 2 This is a partial cross-sectional view of a pesticide intermediate waste gas treatment device in an embodiment of this application; Figure 3 This is a diagram showing the fitting and installation of the sealing end cap and the discharge port in an embodiment of this application.

[0018] Explanation of reference numerals in the attached figures: 1. Enclosure; 11. Airflow treatment core area; 2. Adsorption bed; 3. Feed inlet; 4. Discharge port; 41. Slide chute; 42. Limiting groove; 5. Flange assembly; 6. Support frame; 7. End cap; 71. End face; 72. Limiting block; 73. Handle. Detailed Implementation

[0019] The following will be combined with the appendix Figures 1-3 The embodiments of the technical solutions of this application are described in detail below. The following embodiments are only used to more clearly illustrate the technical solutions of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Furthermore, the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. 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.

[0021] like Figures 1 to 3 As shown, this utility model discloses a pesticide intermediate waste gas treatment device, including a housing 1, an adsorption bed 2, an inlet 3, an outlet 4, a flange assembly 5, a support frame 6, and a sealing end cap 7. Wherein: The housing 1 is integrally welded from corrosion-resistant materials, possessing sufficient structural strength to ensure long-term stable operation. The central section of housing 1 is enclosed by internal partitions to form the airflow treatment core zone 11, whose vertical cross-section has a symmetrical V-shaped structure. This V-shaped design facilitates the gravity-flow of activated carbon, reducing residual amounts.

[0022] The adsorption bed 2 is filled within the V-shaped space of the airflow treatment core zone 11, with its vertical cross-sectional profile perfectly fitting the core zone to ensure no gaps exist. This design maximizes the contact area between the activated carbon and the waste gas, improving adsorption efficiency. High-efficiency columnar activated carbon is selected, and the filling amount is determined according to actual treatment needs. Appropriately meshed screens are installed at both the top and bottom of the bed to prevent activated carbon particles from being carried out by the airflow, ensuring the stability of the treatment effect.

[0023] Furthermore, the feed inlet 3 is located at the center of the top surface of the housing 1 (the very top of the V-shaped structure), employing a standard flange interface and equipped with a flange assembly 5 for excellent sealing performance. The discharge outlet 4 is located at the center of the bottom surface of the housing 1 (the very bottom of the V-shaped structure), also equipped with a double sealing structure consisting of a flange assembly 5 and a sealing end cap 7. The axes of the feed inlet 3 and the discharge outlet 4 coincide, ensuring a continuous flow of material during the loading and unloading of activated carbon, avoiding dead zones of accumulation, thereby reducing replacement time and improving operational efficiency. The sealing design of the flange assembly 5 effectively reduces the risk of exhaust gas leakage, enhancing the safety of the operating environment.

[0024] The sealing end cap 7 includes: an end face 71 that forms a clearance fit with the inner wall of the discharge port 4 to ensure good sealing performance; limiting blocks 72 symmetrically distributed on the edge of the end face 71 to achieve quick positioning of the sealing end cap; a handle 73 on the end face 71 for easy installation and removal of the sealing end cap 7; and an axial sliding groove 41 and a radial limiting groove 42 machined on the inner wall of the discharge port 4. During installation, after aligning the limiting block 72 with the sliding groove 41 and inserting it, the operator holds the handle 73 and pushes the sealing end cap 7 axially to the bottom, then rotates it at a certain angle to lock the limiting block 72 into the limiting groove 42. This structural design allows the entire operation to be completed in a short time without the need for complex tools, significantly reducing manual labor intensity and minimizing downtime during replacement.

[0025] Furthermore, since the discharge port 4 is located on the bottom surface of the box 1, and the sealing end cap 7 needs to cooperate with the limiting groove 42 on the inner wall of the discharge port 4 to achieve locking, the operator needs to put his hand into the discharge port 4 when installing the sealing end cap 7. Therefore, a handle 73 is provided to facilitate the operator's holding.

[0026] The support frame 6 uses stainless steel columns, connected to the bottom of the housing 1 via flanges. Its height is adjustable to meet specific operational needs. This adjustable design ensures sufficient space below the discharge port 4 for placing a collection container, facilitating rapid replacement of activated carbon and improving operational safety. Adjustable feet at the bottom of the columns ensure stable placement of the equipment, reducing vibration during operation and extending its service life.

[0027] Workflow Activated carbon loading: After checking the sealing of the flange assembly at the outlet 4, disassemble the flange assembly at the inlet 3 and add activated carbon through the inlet 3 using appropriate tools. Since the inlet is located at the top of the V-shaped structure, the self-stacking characteristic of the V-shaped structure can achieve uniform filling of activated carbon. Only simple manual leveling is required, which can avoid large areas of dead carbon in the activated carbon, and at the same time significantly shorten the loading time and reduce equipment downtime losses.

[0028] Waste gas treatment: VOC-containing waste gas enters through inlet 3, is treated by adsorption bed 2, and is discharged through outlet 4. The V-shaped flow field design ensures full contact between the waste gas and activated carbon, improving treatment efficiency.

[0029] Activated carbon replacement: a) Disassemble the flange assembly 5 at the discharge port 4. At this time, the sealing end cap 7 remains closed to prevent activated carbon leakage. b) Place a collection container below the discharge port 4. Rotate the sealing end cap 7 by the handle 73. During the rotation, apply a slight axial force. The operator judges whether the limiting block 72 has moved to the end of the axial slide 41 based on the magnitude of the force applied manually. When the limiting block 72 is aligned with the axial slide 41, stop rotating and continue to pull the sealing end cap 7 axially to open the discharge port 4. At this time, the activated carbon flows out by gravity, avoiding the tedious process of manual shoveling required in traditional devices and reducing labor intensity. c) After the activated carbon in the adsorption bed 2 is emptied, install the sealing end cap 7. At this time, open the flange assembly 5 on the feed port 3 to add activated carbon. Observe the addition of activated carbon from the feed port 3. After it is full, install the flange assembly 5 on the feed port 3 and the discharge port 4.

[0030] In the description of the embodiments of this application, the technical terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0031] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "set," "equipped with," "connected," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pesticide intermediate waste gas treatment device, characterized in that, include: The box (1) is defined as the airflow treatment core area (11) in the middle section. The adsorption bed (2) is set in the airflow treatment core area (11) and the vertical cross section of the adsorption bed (2) completely covers the vertical cross section of the airflow treatment core area. The feed inlet (3) is opened on the top surface of the box (1) and communicates with the upper surface of the adsorption bed (2). The discharge outlet (4) is opened on the bottom surface of the box (1) and communicates with the lower surface of the adsorption bed (2). The flange assembly (5) is detachably and sealed to the feed inlet (3) and the discharge outlet (4). The vertical cross section of the airflow treatment core area (11) is a symmetrical V-shaped structure. The adsorption bed (2) is filled in the space defined by the V-shaped structure. The shape of the vertical cross section of the adsorption bed (2) is the same as the outline shape of the V-shaped cross section of the airflow treatment core area (11), forming a gapless fitting structure.

2. The pesticide intermediate waste gas treatment device according to claim 1, characterized in that, The feed inlet (3) is located on the top surface of the V-shaped structure of the airflow treatment core area (11), and the discharge outlet (4) is located on the bottom surface of the V-shaped structure of the airflow treatment core area (11).

3. The pesticide intermediate waste gas treatment device according to claim 1, characterized in that, A support frame (6) is provided at the bottom of the box (1) to raise the distance between the box (1) and the ground to increase the suspension height of the discharge port (4).

4. The pesticide intermediate waste gas treatment device according to claim 1, characterized in that, The inner cavity of the discharge port (4) is provided with a sealing end cap (7).

5. The pesticide intermediate waste gas treatment device according to claim 4, characterized in that, The sealing end cap (7) includes: an end face (71) that is clearance-fitted with the inner wall of the discharge port (4); a limiting block (72) symmetrically arranged on the edge of the end face (71); a handle (73) arranged on the end face (71); a sliding groove (41) is provided along the axis on the inner wall of the discharge port (4), and a limiting groove (42) connected to the end of the sliding groove (41) is provided radially on the inner wall of the discharge port (4).

Images