Tail gas absorption tower for producing and processing monomethylamine hydrochloride

Abstract

The utility model relates to the technical field of tail gas absorption towers, and particularly discloses a tail gas absorption tower for monomethylamine hydrochloride production and processing, which comprises a first tower box and a second tower box communicated with the first tower box, the left end and the right end of the first tower box are respectively provided with a mounting groove, and the front end face of the first tower box is fixedly connected with an L-shaped support. A motor is installed at the front end of the support, the output end of the motor penetrates through the support and is fixedly connected with a gear, the outer wall of the gear is in meshed connection with two racks distributed up and down, the opposite ends of the two racks are fixedly connected with vertical plates, and the opposite faces of the two vertical plates are fixedly connected with frames matched with the two installation grooves correspondingly. Filter shells are detachably connected to the interiors of the upper-end frame and the lower-end frame through bolts, so that the two vertical plates and the two frames move in opposite directions, and the purposes of conveniently replacing a filter screen and activated carbon and conveniently using are achieved.

Description

Technical Field

[0001] This utility model relates to the field of tail gas absorption tower technology, specifically a tail gas absorption tower for the production and processing of monomethylamine hydrochloride. Background Technology

[0002] In the pharmaceutical field, monomethylamine hydrochloride is used as a drug additive to adjust the pH of drugs, improve drug solubility and absorption rate, and enhance efficacy. It is also an important raw material for the synthesis of various drug intermediates and bioactive substances, such as antibacterial agents and drug-resistant agents. In the production process of monomethylamine hydrochloride, waste gas containing harmful components is generated. The tail gas generated by monomethylamine hydrochloride and trimethylamine hydrochloride needs to be treated by tail gas adsorption tower. The working principle of the tail gas adsorption tower is the same. It uses physical or chemical methods to adsorb or transform the harmful substances in the waste gas, thereby ensuring that the waste gas meets the emission standards and protecting the environmental quality.

[0003] A tail gas absorption tower for the production and processing of trimethylamine hydrochloride, Chinese Patent No. CN218249468U, includes: a first absorption tower, a second pipeline, and a second absorption tower. The first absorption tower has a fourth circular hole on one side. A second support is fixed to the lower end of the inner wall of the first groove. Filter screens are fixed to the upper and lower ends of the inner wall of the through hole, and activated carbon is placed between the filter screens. The first support is fixed to the upper end of the inner wall of the first groove. Filter screens are fixed to the upper and lower ends of the inner wall of the through hole, and a catalyst is placed between the filter screens. One side of the second pipeline extends into and is fixed in the first circular hole. The second absorption tower has a second circular hole on one side. A second groove is formed on one side of the inner wall of the second circular hole. The other side of the second pipeline extends into the second groove through the second circular hole. This invention has the advantage of being able to perform multiple treatments on the tail gas, resulting in complete tail gas treatment.

[0004] Since the filter screen in the above device is fixedly installed inside the first absorption tower, it is impossible to replace or maintain it after the activated carbon inside the filter screen reaches saturation or the filter screen is blocked by impurities, which is inconvenient to use. Therefore, it is necessary to propose a tail gas absorption tower for the production and processing of monomethylamine hydrochloride to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a tail gas absorption tower for the production and processing of monomethylamine hydrochloride, which is convenient to replace the filter screen and activated carbon and easy to use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tail gas absorption tower for the production and processing of monomethylamine hydrochloride, comprising a first tower box and a second tower box connected to the first tower box. Mounting slots are provided at both ends of the first tower box. An "L"-shaped bracket is fixedly connected to the front end of the first tower box. A motor is mounted at the front end of the bracket. The output end of the motor passes through the bracket and is fixedly connected to a gear. Two vertically distributed racks are meshed on the outer wall of the gear. Vertical plates are fixedly connected to the opposite ends of the two racks. Frames adapted to the two mounting slots are fixedly connected to the opposite sides of the two vertical plates. Filter shells are detachably connected to the interior of the frames via bolts.

[0007] For ease of flow control, in a preferred embodiment of the tail gas absorption tower for the production and processing of monomethylamine hydrochloride according to this utility model, the interior of the second tower box is provided with a spray chamber, the lower end of which is equipped with multiple evenly distributed nozzles, the outer wall of which is connected to a flow pipe, and a water pump is installed on the outer wall of the flow pipe.

[0008] To increase the stability of the two racks during movement, in a preferred embodiment of the tail gas absorption tower for the production and processing of monomethylamine hydrochloride according to this utility model, two limiting plates are fixedly connected to the front end face of the first tower box, which are distributed vertically and slidably connected to the two racks respectively.

[0009] To facilitate limiting the movement of the racks, in a preferred embodiment of the tail gas absorption tower for the production and processing of monomethylamine hydrochloride according to this invention, a limiting block is fixedly connected to the opposite side of each of the two racks.

[0010] To facilitate sealing between the mounting slots and the frame, the frame and the filter housing, and the vertical plate and the first tower box, in a preferred embodiment of the tail gas absorption tower for the production and processing of monomethylamine hydrochloride according to this utility model, a first sealing gasket is installed on the inner wall of both mounting slots, a second sealing gasket is installed at the bottom of both frames, and a third sealing gasket is installed on the opposite side of both vertical plates.

[0011] To facilitate the diversion of exhaust gas into the first tower box, in a preferred embodiment of the exhaust gas absorption tower for the production and processing of monomethylamine hydrochloride according to this utility model, the left and right side walls of the second tower box are respectively connected to an air inlet pipe and a drain pipe, and the upper end of the first tower box is connected to an exhaust pipe. The outer walls of the exhaust pipe, the air inlet pipe and the drain pipe are all equipped with shut-off valves.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention involves bolting a filter housing containing a catalyst into the frame on the right end, and bolting a filter housing containing activated carbon into the frame on the left end. A motor drives a gear to rotate, which in turn drives two meshing racks to move in opposite directions. This, in turn, moves two vertical plates and two frames relative to each other, moving the two frames into their respective mounting slots to complete the installation of the filter housings. For disassembly, the motor rotates in the opposite direction, causing the two vertical plates and two frames to move in opposite directions, moving the two frames to the outside of the first tower box. This allows for the installation and disassembly of the filter housings inside the two frames, facilitating the replacement of the filter screen and activated carbon, and providing convenient use. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of the present invention;

[0015] Figure 2 This is a top view of the structure of this utility model;

[0016] Figure 3 This is a partial structural diagram of the present invention.

[0017] In the diagram: 1. First tower box; 2. Exhaust pipe; 3. Support; 4. Motor; 5. Gear; 6. Rack; 7. Vertical plate; 8. Frame; 9. Mounting groove; 10. Limiting plate; 11. Limiting block; 12. Second tower box; 13. Inlet pipe; 14. Drain pipe; 15. Spray chamber; 16. Filter shell. Detailed Implementation

[0018] Please see Figures 1 to 3 A tail gas absorption tower for the production and processing of monomethylamine hydrochloride includes a first tower box 1 and a second tower box 12 connected to the first tower box 1. The first tower box 1 has mounting slots 9 at both ends. An "L"-shaped bracket 3 is fixedly connected to the front end of the first tower box 1. A motor 4 is installed at the front end of the bracket 3. The output end of the motor 4 passes through the bracket 3 and is fixedly connected to a gear 5. Two vertically distributed racks 6 are meshed on the outer wall of the gear 5. A vertical plate 7 is fixedly connected to the opposite end of the two racks 6. A frame 8 that is adapted to the two mounting slots 9 is fixedly connected to the opposite side of the two vertical plates 7. A filter shell 16 is detachably connected to the inside of the frame 8 by bolts.

[0019] In this embodiment: During use, the filter shell 16 containing the catalyst is bolted to the inside of the frame 8 at the right end, and the filter shell 16 containing activated carbon (the filter shell 16 is a hollow structure and contains activated carbon or catalyst) is bolted to the inside of the frame 8 at the left end. Then, the motor 4 drives the gear 5 to rotate. When the gear 5 rotates, it drives the two racks 6 meshing with it to move in the opposite direction, thereby driving the two vertical plates 7 and the two frames 8 connected to it to move relative to each other, thereby moving the two frames 8 into the inside of the two mounting slots 9 respectively, completing the installation of the filter shell 16. When disassembling, the motor 4 is rotated in the opposite direction, causing the two vertical plates 7 and the two frames 8 to move in the opposite direction, moving the two frames 8 to the outside of the first tower box 1, so as to install and disassemble the filter shell 16 inside the two frames 8, making it more convenient to use.

[0020] As a technical optimization of this utility model, the interior of the second tower box 12 is provided with a spray chamber 15, and multiple evenly distributed nozzles are installed at the lower end of the spray chamber 15. The outer wall of the spray chamber 15 is connected to a drainage pipe 14, and a water pump is installed on the outer wall of the drainage pipe 14.

[0021] In this embodiment: the drainage pipe 14 is connected to the external spray liquid water source pipe, and the spray liquid can be guided through the drainage pipe 14 to the inside of the spray chamber 15 by a water pump, and then sprayed out through the nozzle outside the spray chamber 15.

[0022] As a technical optimization of this utility model, the front end face of the first tower box 1 is fixedly connected with two limiting plates 10 that are distributed vertically and slidably connected to two racks 6 respectively.

[0023] In this embodiment, the stability of the rack 6 during movement can be increased by the limiting plate 10.

[0024] As a technical optimization of this utility model, the opposite sides of the two racks 6 are fixedly connected to limit blocks 11.

[0025] In this embodiment, the position of the two racks 6 can be restricted by the limiting block 11.

[0026] As a technical optimization of this utility model, the inner walls of the two mounting slots 9 are each equipped with a first sealing gasket, the bottom of the two frames 8 are each equipped with a second sealing gasket, and the opposite sides of the two vertical plates 7 are each equipped with a third sealing gasket.

[0027] In this embodiment: the first sealing gasket can increase the sealing between the mounting groove 9 and the two frames 8, the second sealing gasket can increase the sealing between the frame 8 and the filter shell 16, and the third sealing gasket can increase the sealing between the two vertical plates 7 and the first tower box 1.

[0028] As a technical optimization of this utility model, the left and right side walls of the second tower box 12 are respectively connected to the air inlet pipe 13 and the drain pipe, and the upper end of the first tower box 1 is connected to the exhaust pipe 2. The outer walls of the air inlet pipe 13 and the drain pipe are all equipped with shut-off valves.

[0029] In this embodiment: exhaust gas can be introduced into the second tower box 12 through the air inlet pipe 13, the filtered exhaust gas can be discharged through the exhaust pipe 2, and the spray liquid can be conveniently discharged through the drain pipe.

[0030] Working principle: In use, firstly, the filter shell 16 containing the catalyst is installed inside the frame 8 at the right end with bolts, and the filter shell 16 containing the activated carbon is installed inside the frame 8 at the left end with bolts. Then, the motor 4 drives the gear 5 to rotate. When the gear 5 rotates, it drives the two racks 6 meshing with it to move in opposite directions, thereby driving the two vertical plates 7 and the two frames 8 connected to it to move relative to each other, thereby moving the two frames 8 into the two mounting slots 9 respectively, thus completing the installation of the filter shell 16.

[0031] Next, the exhaust gas is introduced into the interior of the first tower box 1 through the intake pipe 13. Then, the diversion pipe 14 is connected to the external spray liquid water source pipe. The spray liquid can be diverted into the spray chamber 15 through the diversion pipe 14 by the water pump and sprayed out through the nozzle outside the spray chamber 15 to perform preliminary purification of the exhaust gas. Then, the exhaust gas enters the interior of the first tower box 1 and is purified for a second time through the filter shell 16 with activated carbon at the lower end. Then, the exhaust gas is further filtered through the filter shell 16 with catalyst. The filtered exhaust gas is discharged through the exhaust pipe 2.

[0032] When the filter housing 16 needs to be replaced, the motor 4 is rotated in the opposite direction, causing the two vertical plates 7 and the two frames 8 to move in the opposite direction. The two frames 8 are moved to the outside of the first tower box 1, so that the filter housing 16 inside the two frames 8 can be installed and removed, making it more convenient to use.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tail gas absorption tower for the production and processing of monomethylamine hydrochloride, comprising a first tower box (1) and a second tower box (12) connected to the first tower box (1), characterized in that: The first tower box (1) has mounting slots (9) at both the left and right ends. The front end of the first tower box (1) is fixedly connected to an "L"-shaped bracket (3). A motor (4) is installed at the front end of the bracket (3). The output end of the motor (4) passes through the bracket (3) and is fixedly connected to a gear (5). The outer wall of the gear (5) is meshed with two racks (6) distributed vertically. The opposite ends of the two racks (6) are fixedly connected to vertical plates (7). The opposite sides of the two vertical plates (7) are fixedly connected to frames (8) that are adapted to the two mounting slots (9). The inside of the frame (8) is detachably connected to a filter shell (16) by bolts.

2. The tail gas absorption tower for the production and processing of monomethylamine hydrochloride according to claim 1, characterized in that: The second tower box (12) is provided with a spray chamber (15) inside. Multiple evenly distributed nozzles are installed at the lower end of the spray chamber (15). The outer wall of the spray chamber (15) is connected to a drainage pipe (14), and a water pump is installed on the outer wall of the drainage pipe (14).

3. The tail gas absorption tower for the production and processing of monomethylamine hydrochloride according to claim 1, characterized in that: The front end face of the first tower box (1) is fixedly connected to two limiting plates (10) that are distributed vertically and slidably connected to two racks (6).

4. The tail gas absorption tower for the production and processing of monomethylamine hydrochloride according to claim 1, characterized in that: Limiting blocks (11) are fixedly connected to the opposite sides of the two racks (6).

5. The tail gas absorption tower for the production and processing of monomethylamine hydrochloride according to claim 1, characterized in that: The inner walls of the two mounting slots (9) are each equipped with a first sealing gasket, the bottom of the two frames (8) are each equipped with a second sealing gasket, and the opposite sides of the two vertical plates (7) are each equipped with a third sealing gasket.

6. The tail gas absorption tower for the production and processing of monomethylamine hydrochloride according to claim 1, characterized in that: The left and right side walls of the second tower box (12) are respectively connected to an air inlet pipe (13) and a drain pipe. The upper end of the first tower box (1) is connected to an exhaust pipe (2). The outer walls of the exhaust pipe (2), the air inlet pipe (13) and the drain pipe are all equipped with shut-off valves.

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