Efficient acetonitrile absorption device

Abstract

The utility model discloses an efficient acetonitrile absorption device which comprises a packing assembly, the packing assembly comprises a top seat, a base and a plurality of packing layers arranged between the top seat and the base, the packing layers are folded and arranged in a reciprocating mode to form a Z-shaped continuous stacking structure, and the top seat and the base move relatively. The control device is used for controlling the filler layer to be switched between the flattened state and the folded state, and the filler layer is a silk screen layer. When the packing layers need to be cleaned, the packing layers can be flattened, the distance between the packing layers is increased, the surface area of the packing layers is increased, and then the spraying amount of water is increased, so that the packing layers can be cleaned, and the acetonitrile absorption effect of the absorption device is improved; through repeated flattening and folding of the filler layer, dirt, impurities or crystals accumulated on the filler layer can fall off under the action of inertia, the cleaning effect on the filler layer is improved, and the acetonitrile absorption effect of the absorption device is further improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of absorption devices, and in particular relates to a high-efficiency acetonitrile absorption device. Background Technology

[0002] Acetonitrile is a toxic organic compound that, if directly released into the atmosphere, will cause serious environmental pollution, harming the ecological balance and human health. Acetonitrile absorption devices can treat acetonitrile-containing waste gas generated during industrial production processes, reducing the concentration of acetonitrile in the waste gas to meet national emission standards before being released, thereby reducing environmental pollution.

[0003] Commonly used acetonitrile absorption devices include spray absorption towers. The packing is a key component in the spray absorption tower for realizing gas-liquid mass transfer. After long-term use, dirt, impurities or crystals may accumulate on the surface of the packing. These substances will hinder the full contact between gas and liquid on the surface of the packing, reduce the mass transfer efficiency, and affect the absorption efficiency of acetonitrile.

[0004] Therefore, it is necessary to improve the existing acetonitrile absorption devices. Utility Model Content

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide a high-efficiency acetonitrile absorption device to improve the efficiency of the absorption device in absorbing acetonitrile.

[0006] To achieve the above objectives, the specific technical solution of the high-efficiency acetonitrile absorption device of this utility model is as follows:

[0007] A high-efficiency acetonitrile absorption device includes a packing assembly. The packing assembly includes a top seat, a base, and a plurality of packing layers disposed between the two. The packing layers are folded and arranged to form a Z-shaped continuous stacked structure. The top seat and the base move relative to each other to control the packing layers to switch between a flattened state and a folded state. The packing layers are wire mesh layers.

[0008] Preferably, both the base and the top seat are located inside the housing. The bottom of the housing is provided with a drain port and an air inlet. The top of the housing is open and sealed with a top cover. The top cover is provided with an exhaust port, a spray mechanism, and a lifting mechanism. The lifting mechanism is drivenly connected to the top seat.

[0009] Preferably, the top seat is a horizontally arranged perforated plate, and the base is a horizontally arranged grid plate.

[0010] Preferably, the top and bottom of the filler layer are provided with border strips, and the two border strips are detachably connected to the top seat and the base respectively.

[0011] Preferably, a plurality of elastic support strips are provided between the two frame strips. The support strips have a Z-shaped continuous stacked structure that matches the filler layer. The support strips are distributed on the filler layer, and each support strip is arranged at intervals along the extension direction of the frame strip.

[0012] Preferably, the support bar has a waist-shaped groove, which runs vertically through each layer of support bar. Vertically distributed guide posts are inserted into the waist-shaped groove, and the bottom end of the guide post is fixedly connected to the base. The top seat is provided with a guide sleeve that slides with the guide post.

[0013] Preferably, the top cover is provided with a limiting sleeve, and the top end of the guide post is inserted into the limiting sleeve.

[0014] Preferably, the lifting mechanism includes a winch fixedly connected to the top cover, and the winch is connected to the top base via a cable.

[0015] Preferably, the bottom of the box is a conical structure, and a filter box is provided at the drain outlet.

[0016] Preferably, the spraying mechanism includes spray pipes evenly distributed on the inner side of the top cover, and spray heads are arranged at equal intervals along the extension direction of the spray pipes.

[0017] The high-efficiency acetonitrile absorption device of this invention has the following advantages: Waste gas and water contact the packing layer, allowing the water to absorb acetonitrile from the waste gas, thus reducing acetonitrile emissions; when the packing layer needs cleaning, it can be flattened to increase the spacing between layers and the surface area, allowing for increased water spray volume, thereby cleaning the packing layer and improving the absorption efficiency of the device; through repeated flattening and folding of the packing layer, accumulated dirt, impurities, or crystals can be dislodged under inertia, improving the cleaning effect and further enhancing the absorption efficiency of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the absorption device of this utility model;

[0019] Figure 2 This is a cross-sectional view of the absorption device of this utility model;

[0020] Figure 3 This is a schematic diagram of the top cover of this utility model;

[0021] Figure 4 This is a schematic diagram of the packing assembly of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the base plate of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the packing material of this utility model;

[0024] The markings in the diagram are as follows: 1. Box body; 2. Top cover; 3. Lifting mechanism; 4. Filter box; 5. Packing assembly; 6. Spraying mechanism; 101. Air inlet; 102. Drain outlet; 201. Exhaust outlet; 202. Limiting sleeve; 301. Winch; 302. Cable; 501. Top seat; 502. Base; 503. Guide column; 504. Packing layer; 5041. Frame strip; 5042. Support strip; 5043. Waist-shaped groove. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0026] The terms "top surface," "bottom surface," and "full surface" refer to the normal operating state of the acetonitrile absorption device and are used only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] like Figure 1 , 2 As shown in Figure 4, a high-efficiency acetonitrile absorption device includes a packing assembly 5. The packing assembly 5 includes a top seat 501, a base 502, and a plurality of packing layers 504 disposed between the two. The packing layers 504 are folded and arranged to form a Z-shaped continuous stacked structure. The top seat 501 and the base 502 move relative to each other to control the packing layers 504 to switch between a flattened state and a folded state. The packing layers 504 are wire mesh layers.

[0028] The aforementioned acetonitrile absorption device is a spray absorption tower used to absorb acetonitrile in waste gas, thereby reducing acetonitrile emissions and environmental pollution. During operation, water is sprayed downwards into the packing assembly 5, while waste gas enters the packing assembly 5 from the bottom up. The two come into contact inside the packing assembly, thus absorbing acetonitrile through the water. The packing layer 504 is a vertically distributed wire mesh layer, with each wire mesh layer parallel to each other and evenly spaced horizontally. Its material is flexible polytetrafluoroethylene (PTFE), which effectively resists corrosion and is easy to fold. It also has low surface energy, making it easy for substances adhering to its surface to detach, thus facilitating the cleaning of the packing layer 504. Under normal operating conditions, the packing layer 504 is folded into a multi-layered structure, with adjacent packing layers 504 in close contact, forming a wire mesh structure of sufficient thickness to facilitate contact between water and acetonitrile. Sufficient space is provided; as usage time increases, more dirt and impurities accumulate in the gaps of the packing layer 504. The packing layer 504 is then stretched and flattened vertically to form a near-planar structure, exposing the surface of the packing layer 504 that was originally located between the layers. At this time, the interval between two adjacent packing layers 504 increases, and the surface area of ​​the packing layer 504 increases after flattening. By increasing the water spray volume to rinse the packing layer 504, the cleaning effect of the packing layer 504 can be improved. Furthermore, through repeated folding and flattening, dirt and impurities can be separated from the packing layer 504 under the action of inertia, further improving the cleaning effect of the packing layer 504. By cleaning the packing layer 504, its air volume and air uniformity can be improved, thereby improving the absorption effect of the absorption device on acetonitrile and reducing environmental pollution.

[0029] Further improvements include, for example Figure 1-3As shown, the base 502 and the top seat 501 are both located inside the box 1. The bottom of the box 1 is provided with a drain port 102 and an air inlet 101. The top of the box 1 is open and sealed with a top cover 2. The top cover 2 is provided with an exhaust port 201, a spray mechanism 6 and a lifting mechanism 3. The lifting mechanism 3 is connected to the top seat 501 in a transmission manner. The top cover 2 is removable, facilitating the replacement and maintenance of the packing material inside the absorption device. The base 502 is fixed inside the housing 1, and the top seat 501 is driven to rise and fall by the lifting mechanism 3, thereby pulling the packing layer 504 through the top seat 501 to achieve the flattening and folding of the packing layer 504. The spraying mechanism 6 is connected to an external water source, and water can be pumped into the spraying mechanism 6 and sprayed onto the packing layer 504 from above. The air inlet 101 is located below the packing layer 504. The exhaust gas enters the housing 1 through the air inlet 101 and rises into the packing layer 504. The water and exhaust gas are evenly distributed and in contact with each other in the gaps of the packing layer 504, achieving the absorption of acetonitrile. The water after absorbing acetonitrile is discharged from the drain outlet 102 at the bottom of the housing 1. The exhaust gas after absorbing acetonitrile is discharged from the exhaust outlet 201 at the top to enter the next process. The absorption of acetonitrile by the absorption device is completed through the above steps.

[0030] Further improvements include, for example Figure 4 and 5 As shown, the top seat 501 is a horizontally arranged perforated plate, and the base 502 is a horizontally arranged grid plate. The perforated plate can evenly disperse the sprayed water and deliver it into the interior of the packing layer 504, improving the uniformity of water distribution within the packing layer 504. The grid plate can also play the same role, evenly dispersing the exhaust gas and delivering it into the packing layer 504, thereby ensuring uniform contact between water and exhaust gas and improving the absorption effect of acetonitrile. The grid aperture of the grid plate can be set to be larger to facilitate the discharge of dirt and impurities, reduce accumulation on the grid plate, and lower the probability of grid plate clogging.

[0031] Further improvements include, for example Figure 6 As shown, the top and bottom of the filler layer 504 are provided with frame strips 5041, and the two frame strips 5041 are detachably connected to the top seat 501 and the base 502 respectively. The frame strips 5041 can be U-shaped stainless steel strips, which clamp the edge of the filler layer 504 in the groove and are connected to the top seat 501 and the base 502 by bolts, thereby facilitating the disassembly and replacement of the filler layer 504. In addition, the frame strips 5041 can also reinforce the edge of the filler layer 504 and improve the strength of the filler layer 504.

[0032] Further improvements include, for example Figure 6As shown, multiple elastic support strips 5042 are provided between the two frame strips 5041. The support strips 5042 have a Z-shaped continuous stacked structure that matches the filler layer 504. The support strips 5042 are distributed on the filler layer 504, and each support strip 5042 is arranged at intervals along the extension direction of the frame strips 5041. The support strip 5042 can be a polyurethane elastomer, made from diisocyanate, polyol, and chain extender through a chemical reaction. It has a block structure composed of hard and soft segments. The hard segments provide rigidity and strength and are placed in each folded filler layer 504 to reinforce it. The soft segments provide elasticity and flexibility and can be placed at the folded parts of the filler layer 504. The polyurethane elastomer also has excellent properties such as high hardness, high strength, high elasticity, wear resistance, oil resistance, and hydrolysis resistance. It also has good low-temperature elasticity and can maintain good flexibility and elasticity even at low temperatures. By bonding and fixing the support strip to the surface of the filler layer 504, it can adapt to the folding and flattening of the filler layer 504, providing better support for the filler layer 504, thereby improving the strength of the filler layer 504, extending its service life, and reducing the failure rate of the absorption device.

[0033] Further improvements include, for example Figure 4 and 5 As shown, the support bar 5042 has a waist-shaped groove 5043, which vertically penetrates each layer of support bar 5042. Vertically distributed guide posts 503 are inserted within the waist-shaped groove 5043, with the bottom end of the guide post 503 fixedly connected to the base 502. The top seat 501 is provided with a guide sleeve that slidably engages with the guide post 503. The slidable connection between the waist-shaped groove 5043 and the guide post 503 allows the guide post 503 to support and guide the packing layer 504 during folding and flattening, further improving the stability of the packing layer 504. Furthermore, the mutual limiting between the guide post 503 and the guide sleeve also limits and guides the lifting and lowering of the top seat 501, improving its stability and reducing the failure rate of the absorption device.

[0034] Further improvements include, for example Figure 2 and 3 As shown, the top cover 2 is provided with a limiting sleeve 202, and the top end of the guide post 503 is inserted into the limiting sleeve 202. After the limiting sleeve 202 is inserted into the top end of the guide post 503, the top end of the guide post 503 can be fixed, thereby improving the firmness of the guide post 503 installed inside the housing 1, and thus improving the stability of the top seat and the packing layer 504 movement.

[0035] Further improvements include, for example Figure 1As shown, the lifting mechanism 3 includes a winch 301 fixedly connected to the top cover 2. The winch 301 is connected to the top seat 501 via a cable 302. The winch 301 is located outside the top cover 2. The winch 301 winds up and unwinds the cable 302, which passes through the top cover 2 and is slidably sealed to it. By winding up and unwinding the cable 302, the top seat 501 is pulled up and down, ultimately achieving the folding and flattening operation of the filler layer 504. The weight of the top seat 501 is sufficient to offset the resistance it encounters. When the cable 302 is released, the top seat 501 moves downward, allowing it to complete the folding of the filler layer 504.

[0036] Further improvements include, for example Figure 1 As shown, the bottom of the housing 1 has a conical structure, and a filter box 4 is installed at the drain outlet 102. The filter box 4 is equipped with a filter screen or activated carbon aluminum material, which can perform preliminary filtration of the generated wastewater and improve the environmental performance of the absorption device.

[0037] Further improvements include, for example Figure 3 As shown, the spraying mechanism 6 includes spray pipes evenly distributed inside the top cover 2, with spray heads evenly spaced along the extension direction of the spray pipes. One end of the spray pipe is connected to an external water source, and the water inlet pressure is controlled by a water pump. Water is sprayed evenly downwards through the spray heads, thereby improving the uniformity of water distribution inside the packing layer 504 and enhancing the absorption effect of the absorption device in acetonitrile absorption.

[0038] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A high-efficiency acetonitrile absorption device, comprising a packing assembly (5), characterized in that: The filler assembly (5) includes a top seat (501), a base (502), and a plurality of filler layers (504) disposed between the two. The filler layers (504) are folded and arranged to form a Z-shaped continuous stacked structure. The top seat (501) and the base (502) move relative to each other to control the filler layers (504) to switch between a flattened state and a folded state. The filler layers (504) are wire mesh layers.

2. The high-efficiency acetonitrile absorption device according to claim 1, characterized in that, The base (502) and the top seat (501) are both located inside the box (1). The bottom of the box (1) is provided with a drain port (102) and an air inlet (101). The top of the box (1) is open and sealed with a top cover (2). The top cover (2) is provided with an exhaust port (201), a spray mechanism (6) and a lifting mechanism (3). The lifting mechanism (3) is connected to the top seat (501) in a transmission manner.

3. The high-efficiency acetonitrile absorption device according to claim 1, characterized in that, The top seat (501) is a horizontally arranged perforated plate, and the base (502) is a horizontally arranged grid plate.

4. The high-efficiency acetonitrile absorption device according to claim 2, characterized in that, The top and bottom of the filler layer (504) are provided with a frame strip (5041), and the two frame strips (5041) are detachably connected to the top seat (501) and the base (502) respectively.

5. The high-efficiency acetonitrile absorption device according to claim 4, characterized in that, Multiple elastic support strips (5042) are provided between the two frame strips (5041). The support strips (5042) have a Z-shaped continuous stacked structure that matches the filler layer (504). The support strips (5042) are distributed on the filler layer (504), and each support strip (5042) is arranged at intervals along the extension direction of the frame strip (5041).

6. The high-efficiency acetonitrile absorption device according to claim 5, characterized in that, The support bar (5042) has a waist-shaped groove (5043), which passes through each layer of support bar (5042) in a vertical direction. Vertically distributed guide posts (503) are inserted in the waist-shaped groove (5043). The bottom end of the guide post (503) is fixedly connected to the base (502). The top seat (501) is provided with a guide sleeve that slides with the guide post (503).

7. The high-efficiency acetonitrile absorption device according to claim 6, characterized in that, The top cover (2) is provided with a limiting sleeve (202), and the top end of the guide post (503) is inserted into the limiting sleeve (202).

8. The high-efficiency acetonitrile absorption device according to claim 2, characterized in that, The lifting mechanism (3) includes a winch (301) fixedly connected to the top cover (2), and the winch (301) is connected to the top seat (501) via a cable (302).

9. The high-efficiency acetonitrile absorption device according to claim 2, characterized in that, The bottom of the box (1) is a conical structure, and a filter box (4) is provided at the drain port (102).

10. The high-efficiency acetonitrile absorption device according to claim 2, characterized in that, The spraying mechanism (6) includes spray pipes evenly distributed inside the top cover (2), and spray heads are arranged at equal intervals along the extension direction of the spray pipes.

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