Tail gas absorption tower for phosphorus trichloride production

Abstract

The utility model discloses a tail gas absorption tower for phosphorus trichloride production, which comprises a gas suction component and an absorption tower main body connected with the gas suction component, the whole gas suction component consists of a fixing sleeve and a gas inlet pipe communicated with the inside of the lower end of the fixing sleeve, and a connecting pipe is arranged on one side of the lower end of the fixing sleeve far away from the gas inlet pipe. One-way valves are arranged at the end openings of the ends, close to the fixing sleeve, of the air inlet pipe and the connecting pipe correspondingly, a fixing plate and a piston plate are arranged in the fixing sleeve, a movable rod on the upper surface of the piston plate penetrates through the fixing plate and is connected with the fixing plate through a reset mechanism, and a mounting plate is arranged at the upper end of the fixing sleeve. A motor is arranged on the upper surface of the mounting plate, a cam is arranged at the output shaft end of the motor, and the adsorption components can be sequentially replaced when the adsorption components need to be replaced, so that the continuous work of the absorption tower is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field related to waste gas absorption towers, in particular to a tail gas absorption tower used for phosphorus trichloride production. Background Art

[0002] Waste gas absorption tower energy recovery and environmental protection equipment is widely used in various fields such as electricity, chemical industry, electrical and electronic, metallurgy, brewing, etc. The waste gas absorption tower that has been used can only neutralize and purify, and there has been no better way to recycle it for a long time, which has caused a lot of energy to be wasted. Therefore, our company has successfully developed a tail gas absorption tower that absorbs and reuses tail gas. The application not only makes an outstanding contribution to environmental protection, but also saves a lot of energy for enterprises and creates higher value. The waste gas recovery device consists of a falling film recovery device, a primary absorption tower, a secondary absorption tower, a vacuum pump, an exhaust pipe and a control instrument. The equipment can be used according to the application. It is required to install automatic control components, such as gas online analyzer, flow sensor (gas, liquid), solenoid valve, liquid level controller, pH value controller, conductivity meter, control cabinet and accessories, so as to realize the automation of operation and management of this system. The automatic control system can be designed for manual, semi-automatic and fully automatic control according to user requirements. The waste gas recovery device can be applied to various industries, and the absorbed gas type, concentration, temperature and other technical conditions are different. The types of products recovered by the tower are also different. Therefore, this series of equipment should be designed and selected according to actual conditions to tailor practical and economical waste gas absorption towers for users.

[0003] The existing tail gas absorption tower technology for phosphorus trichloride production has the following problems: when the existing tail gas absorption tower for phosphorus trichloride production absorbs the tail gas from industrial production, the tail gas is usually absorbed into the interior of the tower using a motor diameter, and then the tail gas is blown into the tail gas absorption tower, which easily causes the particles in the tail gas to adhere to the fan blades, thereby corroding the fan blades, and the fan blades need to be cleaned frequently, which is very time-consuming.

[0004] Patent No. 202010384650.6 discloses a tail gas absorption tower for phosphorus trichloride production, including a tail gas inlet pipe and an exhaust hood, wherein the exhaust hood is installed on the outer wall of the rear end of the tail gas inlet pipe, and an exhaust pipe is arranged on the outer wall of the rear end of the exhaust hood. The working motor is started before inhaling, and the motor shaft inside the working motor will drive the fan blades to rotate at high speed, blowing the air inside the machine base into the air inlet pipe, and then opening valve a and valve d, so that the air is blown into the connecting pipe a through the action of the fan blades, and then blown into the suction bag. At this time, the tail gas produced by phosphorus trichloride in the suction bag can be blown into the connecting pipe b, and then enter the exhaust gas absorption tower, and processed by the exhaust gas absorption tower. The exhaust gas absorption tower and the suction box in the tail gas absorption tower for phosphorus trichloride production have simple structures, which is convenient for absorbing the tail gas produced by phosphorus trichloride, avoiding the disadvantage of the exhaust gas absorption tower absorbing the tail gas, and preventing the damage and maintenance of the working motor and the fan blades.

[0005] The above-mentioned absorption tower has the following shortcomings when in use: the tail gas is transported at intervals, resulting in low overall absorption efficiency; at the same time, when the internal packing layer needs to be replaced later, the entire device stops running, which further reduces the tail gas absorption efficiency. Utility Model Content

[0006] The utility model aims to provide a tail gas absorption tower for phosphorus trichloride production to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tail gas absorption tower for phosphorus trichloride production, comprising an air intake component and an absorption tower body connected to the air intake component, wherein the air intake component as a whole is composed of a fixed sleeve and an air intake pipe connected to the lower end of the fixed sleeve, a connecting pipe is provided at the lower end of the fixed sleeve on a side away from the air intake pipe, and a one-way valve is provided at the end port of the air intake pipe and the connecting pipe near the fixed sleeve, a fixed plate and a piston plate are provided inside the fixed sleeve, a movable rod on the upper surface of the piston plate penetrates the fixed plate, and the movable rod is connected to the fixed sleeve. The fixing plate is connected through a reset mechanism, a mounting plate is arranged at the upper end of the fixing sleeve, a motor is arranged on the upper surface of the mounting plate, a cam is arranged at the output shaft end of the motor, the side surface of the cam abuts against the upper end surface of the movable rod, the absorption tower body is arranged on one side of the air intake component, the absorption tower body includes a cylinder body, and an adsorption component arranged inside the cylinder body, two installation cavities are formed inside the cylinder body by arranging a partition, the adsorption component is arranged in the installation cavity, and a cover plate is arranged at the upper end of the cylinder body corresponding to the installation cavity, and an exhaust pipe is arranged at the cover plate.

[0008] Preferably, the reset mechanism comprises a limit plate and a compression spring arranged on the outside of the movable rod, and the upper end and the lower end of the compression spring are respectively in contact with the limit plate and the fixed plate.

[0009] Preferably, a through groove is provided in the middle of the mounting plate, and the width of the groove is greater than the thickness of the cam.

[0010] Preferably, the connecting pipe is provided with a first collecting pipe at one end away from the fixing sleeve, and the first collecting pipe is communicated with the lower ends of the two installation cavities through a first conduit.

[0011] Preferably, it also includes a spray mechanism, which includes a circulation pipe and a circulation pump, the circulation pump is connected to the lower end of the cylinder, a second collecting pipe is provided at the liquid outlet end of the circulation pump, and the second collecting pipe is connected to the upper ends of the two installation cavities through a second conduit.

[0012] Preferably, the adsorption assembly comprises an upper grid plate, a lower grid plate and a connecting frame connecting the upper grid plate and the lower grid plate, and a filler layer is provided between the upper grid plate and the lower grid plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By installing the suction component and using the adsorption component to replace the traditional fan blade rotation to drive the exhaust gas movement, the traditional exhaust gas corrosion to the fan blade is avoided, the cost is reduced, and the suction component can also increase the pressure of the exhaust gas transmission and improve the transmission efficiency;

[0015] 2. By setting two installation cavities inside the absorption tower body and setting two detachable adsorption components inside the two installation cavities, when the adsorption components need to be replaced during use, the adsorption components can be replaced in turn, thereby ensuring uninterrupted operation of the absorption tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the air intake assembly of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the absorption tower body of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the adsorption component of the utility model.

[0020] In the figure: 1. suction assembly; 2. absorption tower body; 3. fixing sleeve; 4. air inlet pipe; 5. connecting pipe; 6. packing layer; 7. fixing plate; 8. piston plate; 9. movable rod; 10. mounting plate; 11. motor; 12. cam; 13. cylinder; 14. partition; 15. mounting cavity; 16. cover plate; 17. exhaust pipe; 18. limit plate; 19. compression spring; 20. groove; 21. first collecting pipe; 22. first conduit; 23. circulation pipe; 24. circulation pump; 25. second collecting pipe; 26. adsorption assembly; 27. upper grid plate; 28. lower grid plate; 29. ​​connecting frame. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides a technical solution: a tail gas absorption tower for phosphorus trichloride production, comprising an air intake component 1 and an absorption tower body 2 connected to the air intake component 1, the air intake component 1 as a whole is composed of a fixed sleeve 3 and an air intake pipe 4 connected to the lower end of the fixed sleeve 3, a connecting pipe 5 is arranged at the lower end of the fixed sleeve 3 on a side away from the air intake pipe 4, the air intake pipe 4 and the connecting pipe 5 are both provided with a one-way valve at a port close to the fixed sleeve 3, a fixed plate 7 and a piston plate 8 are arranged inside the fixed sleeve 3, a movable rod 9 on the upper surface of the piston plate 8 penetrates the fixed plate 7, and the movable rod 9 is connected to the fixed plate 7 through a reset mechanism A mounting plate 10 is provided at the upper end of the fixing sleeve 3, a motor 11 is provided on the upper surface of the mounting plate 10, a cam 12 is provided at the output shaft end of the motor 11, and the side surface of the cam 12 abuts against the upper end surface of the movable rod 9. The absorption tower body 2 is provided on one side of the air intake component 1, and the absorption tower body 2 includes a cylinder 13 and an adsorption component 26 arranged inside the cylinder 13. Two mounting cavities 15 are formed inside the cylinder 13 by arranging a partition 14. The adsorption component 26 is arranged in the mounting cavity 15. A cover plate 16 is provided at the upper end of the cylinder 13 corresponding to the mounting cavity 15, and an exhaust pipe 17 is provided at the cover plate 16.

[0023] The reset mechanism includes a limit plate 18 and a compression spring 19 arranged outside the movable rod 9. The upper end and the lower end of the compression spring 19 are respectively in contact with the limit plate 18 and the fixed plate 7.

[0024] A through groove 20 is formed in the middle of the mounting plate 10 , and the width of the groove 20 is greater than the thickness of the cam 12 .

[0025] The connecting pipe 5 is provided with a first collecting pipe 21 at one end away from the fixing sleeve 3 . The first collecting pipe 21 is communicated with the lower ends of the two installation cavities 15 through a first conduit 22 .

[0026] It also includes a spray mechanism, which includes a circulation pipe 23 and a circulation pump 24. The circulation pump 24 is connected to the lower end of the cylinder 13. A second collecting pipe 25 is provided at the liquid outlet of the circulation pump 24. The second collecting pipe 25 is connected to the upper ends of the two installation cavities 15 through a second conduit.

[0027] The adsorption assembly 26 includes an upper grid plate 27 , a lower grid plate 28 and a connecting frame 29 connecting the upper grid plate 27 and the lower grid plate 28 . A packing layer 6 is provided between the upper grid plate 27 and the lower grid plate 28 .

[0028] Specifically, when using the utility model, the air intake pipe 4 of the device as a whole is connected to the exhaust gas delivery pipe, the motor 11 is started, and the cam 12 is driven to rotate by the motor 11, so that the piston plate 8 moves up and down inside the fixed sleeve 3 in combination with the compression spring 19, and the exhaust gas inside the lower end of the fixed sleeve 3 is pressurized and delivered to the inside of the absorption tower body 2, and enters the inside of the two installation cavities 15 respectively through the first collecting pipe 21 and the first conduit 22, and then the exhaust gas is absorbed and purified under the adsorption action of the packing layer 6.

[0029] In the above process, when the movable rod 9 and the piston plate 8 move downward, the exhaust gas inside the fixed sleeve 3 is compressed, so that it enters the absorption tower body 2 through the connecting pipe 5; when the movable rod 9 and the piston plate 8 move upward, the exhaust gas in the intake pipe 4 enters the interior of the fixed sleeve 3.

[0030] At the same time, during use, sampling and testing are carried out from the two exhaust pipes 17, and it is determined whether the internal adsorption components need to be replaced or cleaned based on the test results. When the adsorption components need to be replaced, the two adsorption components can be replaced in turn, and when replacing, the adsorption work can be performed by another adsorption component to ensure the normal operation of the device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tail gas absorption tower for phosphorus trichloride production, characterized in that, The invention comprises an air intake component (1) and an absorption tower body (2) connected to the air intake component (1); the air intake component (1) as a whole is composed of a fixed sleeve (3) and an air intake pipe (4) connected to the interior of the lower end of the fixed sleeve (3); a connecting pipe (5) is arranged at the lower end of the fixed sleeve (3) on a side away from the air intake pipe (4); the air intake pipe (4) and the connecting pipe (5) are both provided with a one-way valve at a port close to one end of the fixed sleeve (3); a fixed plate (7) and a piston plate (8) are arranged inside the fixed sleeve (3); a movable rod (9) on the upper surface of the piston plate (8) penetrates the fixed plate (7); the movable rod (9) is connected to the fixed plate (7) via a reset mechanism; and a mounting plate (10) is arranged at the upper end of the fixed sleeve (3). ), a motor (11) is arranged on the upper surface of the mounting plate (10), a cam (12) is arranged at the output shaft end of the motor (11), the side surface of the cam (12) is in contact with the upper end surface of the movable rod (9), the absorption tower body (2) is arranged on one side of the air intake assembly (1), the absorption tower body (2) comprises a cylinder (13), an adsorption assembly (26) arranged inside the cylinder (13), two mounting cavities (15) are formed inside the cylinder (13) by arranging a partition (14), the adsorption assembly (26) is arranged in the mounting cavity (15), the upper end of the cylinder (13) is provided with a cover plate (16) at the corresponding mounting cavity (15), and the cover plate (16) is provided with an exhaust pipe (17).

2. A tail gas absorber for phosphorus trichloride production according to claim 1, characterized in that: The reset mechanism comprises a limit plate (18) and a compression spring (19) arranged outside the movable rod (9); the upper end and the lower end of the compression spring (19) are respectively in contact with the limit plate (18) and the fixed plate (7).

3. A tail gas absorber for phosphorus trichloride production according to claim 1, characterized in that: A through groove (20) is provided in the middle of the mounting plate (10), and the width of the groove (20) is greater than the thickness of the cam (12).

4. A tail gas absorber for phosphorus trichloride production according to claim 1, characterized in that: The connecting pipe (5) is provided with a first collecting pipe (21) at one end away from the fixing sleeve (3), and the first collecting pipe (21) is connected to the lower ends of the two installation cavities (15) through a first conduit (22).

5. A tail gas absorber for phosphorus trichloride production according to claim 1, characterized in that: It also includes a spray mechanism, which includes a circulation pipe (23) and a circulation pump (24). The circulation pump (24) is connected to the interior of the lower end of the cylinder (13). A second collecting pipe (25) is provided at the liquid outlet end of the circulation pump (24). The second collecting pipe (25) is connected to the upper ends of the two installation cavities (15) through a second conduit.

6. A tail gas absorber for phosphorus trichloride production according to claim 1, characterized in that: The adsorption assembly (26) comprises an upper grid plate (27), a lower grid plate (28) and a connecting frame (29) connecting the upper grid plate (27) and the lower grid plate (28), and a packing layer (6) is provided between the upper grid plate (27) and the lower grid plate (28).

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