Phenylacetic acid tail gas absorption device

Abstract

The utility model discloses a kind of phenylacetic acid tail gas absorption devices, including the tank body of the top opening and the tank cover of detachably connected at the tank body top opening, further include support frame and filler filling frame, the support frame is set in tank body inner bottom side;The filler filling frame has multiple and is sequentially arranged in tank body from bottom to top and arranged above support frame, each filler filling frame has filler arrangement cavity for filling filler and the support hoisting portion at its top;Compared with prior art, the replacement process of filler, its operation is relatively simple.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to a phenylacetic acid tail gas absorption device. Background Technology

[0002] The phenylacetic acid tail gas absorption device is a device used to treat the phenylacetic acid-containing waste gas generated during the production or use of phenylacetic acid. Its core objective is to absorb phenylacetic acid in the waste gas through physical or chemical methods, thereby reducing environmental pollution and achieving resource recovery.

[0003] The phenylacetic acid tail gas absorption device mainly includes a washing absorption device and an adsorption treatment device. The washing absorption device uses spraying or a packing layer to make the waste gas fully contact the absorption liquid (such as alkaline solution) to absorb phenylacetic acid. The adsorption treatment device uses adsorbents such as activated carbon to separate phenylacetic acid from the waste gas.

[0004] Existing washing-type absorption devices directly pile the packing material inside the tank. When replacing the packing material, staff need to enter the tank to transfer the packing material out of the tank, which is a relatively troublesome operation. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a phenylacetic acid tail gas absorption device to solve the problem that it is inconvenient to replace the packing in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a phenylacetic acid tail gas absorption device, comprising a tank with an open top and a tank cover detachably connected to the opening at the top of the tank, and further comprising:

[0007] The support frame is disposed on the bottom side of the tank body;

[0008] The packing racks are multiple in number and arranged sequentially from bottom to top inside the tank and above the support frame. Each packing rack has a packing arrangement cavity for filling the packing and a support hoisting part located at its top.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] The phenylacetic acid tail gas absorption device is located inside the tank. The support frame consists of multiple packing frames arranged from bottom to top. When the packing needs to be replaced, the tank cover is first separated from the tank body to open the top opening of the tank. Then, a hoisting device is used to connect to the support hoisting parts of the multiple packing frames in sequence, so that the multiple packing frames can be moved out of the tank body from the top opening. Next, the packing material filled in the packing arrangement cavity of each packing frame is removed and replaced with new packing material. Then, the hoisting device is used again to connect to the support hoisting parts of the multiple packing frames in sequence, so that the multiple packing frames for packing replacement can be hoisted into the tank body and arranged in sequence. Finally, the tank cover is connected to the tank body to complete the packing replacement. The operation is relatively simple. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0012] Figure 2 for Figure 1 A partial sectional view;

[0013] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0014] Figure 4 for Figure 1 A schematic diagram showing the arrangement of the filler packing frame, support hoisting unit, and liquid distribution assembly;

[0015] Figure 5 for Figure 4 Schematic diagram of the middle support tube;

[0016] Figure 6 for Figure 1 Schematic diagram of the middle support frame;

[0017] Figure 7 for Figure 1 A schematic diagram of the structure of the central air duct.

[0018] The reference numerals in the accompanying drawings include: tank body 1, tank cover 2, support frame 3, support plate 31, isolation column 32, through hole 33, packing frame 4, accommodating chamber 41, guide hole 42, support and hoisting part 5, hoisting column 51, limiting head 52, liquid distribution assembly 6, liquid distribution part 61, support pipe 62, first liquid distribution hole 63, liquid guide pipe 64, second liquid distribution hole 65, positioning groove 7, sealing guide block 8, liquid guide hole 9, connecting hole 10, air distribution pipe 11, air distribution hole 12, and air guide pipe 13. Detailed Implementation

[0019] The present invention will be further described in detail below through specific embodiments:

[0020] like Figure 1 and Figure 2 As shown in the figure, this utility model embodiment proposes a phenylacetic acid tail gas absorption device, including a tank body 1 with an open top and a tank cover 2 detachably connected to the top opening of the tank body 1, as well as a support frame 3 and a filler frame 4. The support frame 3 is disposed on the bottom side inside the tank body 1; there are multiple filler frames 4 arranged sequentially from bottom to top inside the tank body 1 and above the support frame 3, each filler frame 4 having a filler arrangement cavity for filling filler and a support and hoisting part 5 located at its top.

[0021] The phenylacetic acid tail gas absorption device is located inside the tank 1. The support frame 3 is supported by multiple packing frames 4 from bottom to top. When the packing needs to be replaced, the tank cover 2 is first separated from the tank 1 to open the top opening of the tank 1. Then, a hoisting device is used to connect the support hoisting parts 5 of the multiple packing frames 4 in sequence, so that the multiple packing frames 4 are moved out of the tank 1 from the top opening of the tank 1 in sequence. Next, the packing filled in the packing arrangement cavity of each packing frame 4 is taken out and replaced with new packing. Then, the hoisting device is used again to connect the support hoisting parts 5 of the multiple packing frames 4 in sequence, so that the multiple packing frames 4 with the replaced packing are hoisted into the tank 1 and arranged in sequence. Finally, the tank cover 2 is connected to the tank 1 to complete the replacement of the packing. The operation is relatively simple.

[0022] In this embodiment, the tank 1 is composed of a cylindrical section on the top side and a conical section on the bottom side. The support frame 3 and the packing frame 4 are both arranged inside the cylindrical section. An exhaust pipe is provided in the middle of the tank cover 2 to facilitate the discharge of the absorbed and purified gas. A drain pipe is provided at the bottom of the conical section to facilitate the collection and discharge of the absorbent liquid, which can be a sodium hydroxide solution.

[0023] To better understand the filler packing frame 4, its structure is first optimized; for example... Figure 2 as well as Figure 4 As shown, according to another embodiment of the present invention, in the phenylacetic acid tail gas absorption device, each of the packing frame 4 includes a accommodating chamber 41, the top of the accommodating chamber 41 is open and the packing arrangement cavity is formed therein, a plurality of through holes 42 are evenly distributed at the bottom of the accommodating chamber 41, and the supporting hoisting part 5 is arranged above the top side of the accommodating chamber 41.

[0024] In this embodiment, the accommodating chamber 41 is cylindrical and adapted to the cylindrical section of the tank body 1; the top of the accommodating chamber 41 is open to facilitate filling or removing the packing material. Several through holes 42 serve as flow channels, specifically allowing phenylacetic acid tail gas to enter the accommodating chamber 41 through the through holes 42 to contact the absorbent liquid. After absorbing the phenylacetic acid, the absorbent liquid passes through the through holes 42 until it is discharged from the drain pipe.

[0025] The supporting hoisting part 5 is located above the top side of the accommodating chamber 41. On the one hand, it facilitates hoisting in conjunction with the hoisting rope of the hoisting equipment. On the other hand, it limits the space between two adjacent accommodating chambers 41 to form an isolation space, which is beneficial to the distribution of phenylacetic acid tail gas and absorption liquid.

[0026] To ensure sufficient contact between the absorbent and the phenylacetic acid tail gas within the containment chamber 41, such as Figure 2 , Figure 4 as well as Figure 5 As shown, according to another embodiment of the present invention, in the phenylacetic acid tail gas absorption device, each of the accommodating chambers 41 is equipped with a liquid distribution assembly 6, and the supporting hoisting part 5 is connected to the top of the liquid distribution assembly 6.

[0027] The liquid distribution assembly 6 includes a liquid distribution section 61 and a support tube 62. The liquid distribution section 61 has a liquid guiding cavity and a plurality of first liquid distribution holes 63 communicating with the liquid guiding cavity. The liquid guiding cavity is also connected to a liquid guiding tube 64. The support and hoisting part 5 is connected to the top of the liquid distribution section 61. There are multiple support tubes 62, all of which are connected between the support tubes 62 and the bottom wall of the accommodating chamber 41. The multiple support tubes 62 are arranged at intervals, and each support tube 62 has a plurality of second liquid distribution holes 65.

[0028] In this embodiment, the liquid distribution part 61 specifically includes an annular pipe and a straight pipe arranged in its radial direction and connected to it. The liquid guide pipe 64 is connected to the annular pipe, the support and hoisting part 5 is connected to the straight pipe, and a plurality of first liquid distribution holes 63 and a plurality of support pipes 62 are distributed on the straight pipe and the annular pipe.

[0029] Based on the above structure, the following specific examples are given:

[0030] The support pipe 62 has seven pipes, including one main pipe and six branch pipes. The main pipe is connected between the straight pipe and the bottom wall of the receiving chamber 41, and the six branch pipes are connected between the bottom wall of the receiving chamber 41 and the annular pipe, with the six branch pipes circumferentially distributed on the outside of the main pipe. A plurality of first liquid distribution holes 63 are distributed on the bottom of the straight pipe and on the bottom and outer wall of the annular pipe. The liquid guide pipe 64 guides the absorbent liquid into the annular pipe and flows into the straight pipe, the main pipe, and the branch pipes, distributing it evenly into the receiving chamber 41 through the first liquid distribution holes 63 and the second liquid distribution holes 65. The absorbent is distributed internally and evenly adheres to the surface of the packing material filling the accommodating chamber 41 to fully contact the phenylacetic acid tail gas that has entered the accommodating chamber 41, thereby improving the absorption capacity of phenylacetic acid in the tail gas. In this case, multiple second liquid distribution holes 65 are spirally distributed along the axial direction on the corresponding support pipe 62. With a relatively small number of second liquid distribution holes 65 on the support pipe 62, the absorbent can be distributed in the accommodating chamber 41 at different heights and in different directions, which is beneficial to improving the uniformity of the absorbent distribution.

[0031] To better understand the supporting hoisting part 5, its structure can be further optimized; such as... Figure 2 as well as Figure 4 As shown, according to another embodiment of the present invention, the phenylacetic acid tail gas absorption device includes a plurality of lifting columns 51 spaced apart on the top of the packing frame 4, and a limiting head 52 is formed on the lifting end of each lifting column 51.

[0032] In this embodiment, there are three lifting columns 51 arranged linearly at intervals, and the three lifting columns 51 are fixedly connected to the top of the straight pipe. The limiting head 52 is used to facilitate the stable connection of the lifting rope with the lifting column 51 for cooperation, and to prevent the lifting rope from falling off the lifting column 51.

[0033] To improve the assembly accuracy of the packing frame 4 and facilitate the introduction of the absorbent liquid into the liquid guide tube 64; such as Figure 2 , Figure 3 as well as Figure 4 As shown, according to another embodiment of the present invention, in the phenylacetic acid tail gas absorption device, a positioning groove 7 is formed on the inner wall of the tank 1 along its axial direction, and a sealing guide block 8 that is slidably adapted to the positioning groove 7 is connected to the outer wall of each accommodating chamber 41. The sealing guide block 8 has a liquid guiding hole 9 that communicates with the corresponding liquid guiding pipe 64. The liquid guiding hole 9 is provided with a connecting hole 10 opened on the outer wall of the tank 1 for connecting the liquid inlet pipe.

[0034] In this embodiment, the assembly process of the filler filling frame 4 is demonstrated by using two filler filling frames 4 as examples.

[0035] First, align the sealing guide block 8 of the first packing frame 4 with the positioning groove 7 and slide it into the positioning groove 7. The sealing guide block 8 guides the assembly of the packing frame 4 until the bottom of the receiving chamber 41 of the first packing frame 4 is aligned with the support frame 3. At this time, the liquid guiding hole 9 on the sealing guide block 8 is aligned and connected with the corresponding connecting hole 10. Then, align the sealing guide block 8 of the second packing frame 4 with the positioning groove 7 and slide it into the positioning groove 7. The sealing guide block 8 guides the assembly of the packing frame 4 until the bottom of the receiving chamber 41 of the second packing frame 4 abuts against the lifting column 51 in the first packing frame 4. At this time, the liquid guiding hole 9 on the sealing guide block 8 is aligned and connected with the corresponding connecting hole 10.

[0036] The system is then fitted with an inlet pipe that has three connection ports. Two of the connection ports are threaded into the corresponding connection holes 10 and guide holes 9 via connectors, while the other connection port is used to connect to the absorbent liquid.

[0037] After assembly, the sealing guide block 8 also seals the positioning groove 7, preventing a small amount of phenylacetic acid tail gas from directly moving upward from the positioning groove 7 and affecting the absorption effect of the phenylacetic acid tail gas.

[0038] Next, the structure of the support frame 3 is optimized, such as... Figure 2 as well as Figure 6 As shown, according to another embodiment of the present invention, the phenylacetic acid tail gas absorption device includes a support frame 3 comprising a support plate 31 and isolation columns 32. The support plate 31 is fixedly disposed on the bottom side of the tank body 1 and has several through holes 33 thereon. There are multiple isolation columns 32, all of which are fixedly connected to the top surface of the support plate 31 and the multiple isolation columns 32 are arranged at intervals.

[0039] In this embodiment, the support plate 31 is a circular plate adapted to the bottom side of the cylindrical section of the tank 1, and several through holes 33 provide channels for the flow of phenylacetic acid tail gas and absorbent liquid; the number of the isolation columns 32 is shown as six and evenly distributed on the top edge of the support plate 31 to support the packing frame 4 above, and to form a space between the support plate 31 and the packing frame 4, which is conducive to the flow of phenylacetic acid tail gas and absorbent liquid.

[0040] Finally, as Figure 2 as well as Figure 7 As shown, according to another embodiment of the present invention, the phenylacetic acid tail gas absorption device further includes a gas distribution pipe 11 disposed inside the tank 1 and located below the support frame 3. The bottom of the gas distribution pipe 11 is evenly distributed with a plurality of gas distribution holes 12, and the gas distribution pipe 11 is connected to a gas guide pipe 13 extending to the outside of the tank 1.

[0041] In this embodiment, the gas distribution pipe 11 is specifically located on the inner bottom side of the cylindrical section of the tank body 1, at a certain distance below the support plate 31. The gas distribution pipe 11 is arranged in a cross shape, and the gas guide pipe 13 is connected to one end of the gas distribution pipe 11. The phenylacetic acid tail gas is introduced into the gas distribution pipe 11 through the gas guide pipe 13, and is evenly distributed to the inner bottom side of the cylindrical section of the tank body 1 through multiple gas distribution holes 12. The phenylacetic acid tail gas then rises to contact the absorbent liquid.

[0042] The shape of the gas distribution pipe 11 and the distribution of the multiple gas distribution holes 12 in the gas distribution pipe 11 are conducive to the uniform distribution of phenylacetic acid tail gas on the bottom side of the cylindrical section of the tank body 1; the gas distribution holes 12 are all opened at the bottom of the gas distribution pipe 11 to prevent the absorbent liquid from entering the gas distribution pipe 11 through the gas distribution holes 12 and affecting the gas distribution work.

[0043] The phenylacetic acid tail gas absorption device is used as follows:

[0044] A liquid pump is used to draw the absorbent liquid from the storage tank into the inlet pipe, and then through each liquid guide pipe 64 into the corresponding annular pipe, straight pipe and support pipe 62 to distribute the liquid in the corresponding container 41.

[0045] Meanwhile, the phenylacetic acid tail gas is introduced into the gas distribution pipe 11 through the gas guide pipe 13 and then evenly distributed on the bottom side of the cylindrical section of the tank 1. The phenylacetic acid tail gas then moves upward to contact the absorbent liquid. The phenylacetic acid in the tail gas is absorbed by the absorbent liquid, which flows downward in the tank 1 and is discharged from the drain pipe for collection. The treated tail gas is discharged from the exhaust pipe, and further processing or direct venting is carried out according to the actual situation.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A phenylacetic acid tail gas absorption device comprising a tank body with an open top and a tank cover detachably connected at the open top of the tank body, characterized in that, Also includes: The support frame is disposed on the bottom side of the tank body; The packing racks are multiple in number and arranged sequentially from bottom to top inside the tank and above the support frame. Each packing rack has a packing arrangement cavity for filling the packing and a support hoisting part located at its top.

2. The device for absorbing the tail gas of phenylacetic acid according to claim 1, characterized in that, Each of the aforementioned filler packing frames includes: The container has an open top and a filling arrangement cavity inside, and several through holes are evenly distributed at the bottom of the container. The supporting hoisting part is located above the top side of the container.

3. A device for absorbing phenylacetic acid tail gas according to claim 2, characterized in that The container is equipped with a liquid distribution assembly, and the supporting hoisting part is connected to the top of the liquid distribution assembly.

4. The apparatus according to claim 3, wherein The liquid distribution assembly includes: The liquid distribution section has a liquid guiding cavity and a plurality of first liquid distribution holes communicating with the liquid guiding cavity. The liquid guiding cavity is also connected to a liquid guiding pipe. The supporting hoisting part is connected to the top of the liquid distribution section. The support tubes are multiple and connected between the support tubes and the bottom wall of the accommodating chamber. The multiple support tubes are arranged at intervals, and each support tube has multiple second liquid distribution holes.

5. A device for absorbing phenylacetic acid tail gas according to claim 4, characterized in that Multiple second liquid distribution holes are spirally distributed along the axial direction on the corresponding support pipe.

6. A device for absorbing phenylacetic acid tail gas according to claim 4, characterized in that, The liquid distribution section includes an annular pipe and a straight pipe arranged radially thereto and connected thereto. The liquid guide pipe is connected to the annular pipe, and the support and hoisting section is connected to the straight pipe. Several first liquid distribution holes and multiple support pipes are distributed on the straight pipe and the annular pipe.

7. A phenylacetic acid tail gas absorption apparatus according to any one of claims 4-6, characterized in that, A positioning groove is formed on the inner wall of the tank along its axial direction. Each accommodating compartment is connected to a sealing guide block that slides and adapts to the positioning groove on its outer wall. The sealing guide block has a liquid guide hole that communicates with the corresponding liquid guide pipe. The liquid guide hole is also provided with a connecting hole on the outer wall of the tank for connecting the liquid inlet pipe.

8. The phenylacetic acid tail gas absorption apparatus according to claim 1, characterized in that The supporting hoisting part includes a plurality of hoisting columns spaced apart on the top of the filler frame, and a limiting head is formed on the hoisting end of each hoisting column.

9. The phenylacetic acid tail gas absorption apparatus according to claim 1, characterized in that The support frame includes: A support plate, which is fixedly installed on the bottom side of the tank body and has several through holes thereon; The isolation columns are multiple and fixedly connected to the top surface of the support plate, with the multiple isolation columns arranged at intervals.

10. The phenylacetic acid tail gas absorption apparatus according to claim 1, characterized in that, It also includes a gas distribution pipe installed inside the tank and located below the support frame. The bottom of the gas distribution pipe has multiple gas distribution holes, and the gas distribution pipe is connected to a guide pipe that extends to the outside of the tank.

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