An intelligent purification device for paraquat synthesis tail gas

Abstract

The utility model discloses an intelligent purification device for paraquat synthetic tail gas, which belongs to the technical field of paraquat preparation. The intelligent purification device for paraquat synthetic tail gas comprises a purification tower body, a spray rack is installed in the middle of the purification tower body, a material storage box is installed outside the spray rack, a booster pump is installed outside the material storage box, a lifting partition is installed inside the purification tower body, a gas collecting hood is installed at the lower end of the lifting partition, and an electric cylinder is installed at the lower end of the gas collecting hood. The utility model solves the problem of the existing X. The utility model collects tail gas through the gas collecting hood, detects the sulfide content in the tail gas through the monitoring sensor above the gas collecting hood, and judges the amount of washing liquid through the PLC module, adjusts the booster pump, thereby reducing the consumption of detergent, so as to save energy, thereby improving the use effect, facilitating long-term use, and having better intelligent effect, and improving the functionality of the equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of paraquat preparation, in particular to intelligent purification equipment for paraquat synthesis tail gas. Background Art

[0002] Paraquat is a fast-acting contact-killing herbicide. It is currently mainly synthesized by sodium cyanide catalysis. The chemical reaction process is to use pyridine, methyl chloride, and chlorine as raw materials, sodium cyanide as catalyst, and liquid ammonia as reaction solvent for coupling and chlorination to produce paraquat. This method has strong market competitiveness, but the waste liquid generated during its synthesis process contains characteristic pollution factors such as sulfide and nitrogen oxides in the waste gas after being incinerated in an incinerator. It also has the characteristics of high temperature, large gas volume, and many pollution factors. The treatment process is complex and the environmental damage is great.

[0003] A Chinese patent with announcement number CN211612236U discloses a paraquat waste gas treatment device, including a water seal tank, an absorption and washing tower, a cooling tower and a closed cooling tower. The patent can absorb the acidic gas contained in the paraquat waste gas and remove water vapor, reduce the amount of liquid alkali solution, and has the advantages of continuous operation, simple operation, and strong independence.

[0004] In actual use, the purification device of the above patent has a simple structure, high energy consumption and little functionality. Utility Model Content

[0005] The purpose of the utility model is to provide an intelligent purification device for paraquat synthesis tail gas, which solves the problems of the purification device proposed in the above background technology in actual use, such as single structure, high energy consumption and few functions.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a paraquat synthetic tail gas intelligent purification device, comprising a purification tower body, a spray rack is installed in the middle of the purification tower body, a material storage box is installed on the outside of the spray rack, a washing liquid for purifying tail gas is arranged inside the material storage box, a booster pump is installed on the outside of the material storage box, a lifting baffle is installed inside the purification tower body, an air collecting hood is installed at the lower end of the lifting baffle, an electric cylinder is installed at the lower end of the air collecting hood, and an integrally formed collecting port is arranged at the upper end of the lifting baffle.

[0007] Preferably, an air outlet pipe is installed above the purification tower body, an exhaust fan is installed inside the air outlet pipe, and the exhaust fan is sealed and connected to the purification tower body through a sealing ring.

[0008] Preferably, six spray racks are provided, and a liquid inlet is provided on the outside of the six spray racks. The liquid inlet is installed at one end of the booster pump, and one end of the booster pump extends to the purification tower body and is sealed and connected to the purification tower body.

[0009] Preferably, the lifting partition is slidably connected to the purification tower body through a slide groove, and the two ends of the electric cylinder are slidably connected to the lifting partition and the purification tower body respectively.

[0010] Preferably, a monitoring sensor is installed inside the lifting partition, and the monitoring sensor is used to monitor the sulfide content of the exhaust gas inside the lifting partition. The monitoring sensor includes a plc module, and the plc module is electrically connected to the electric cylinder and the boost pump. A solenoid valve is installed inside the lifting partition, and the solenoid valve is used to switch the collecting port, and the solenoid valve is electrically connected to the plc module.

[0011] Preferably, a connecting seat is installed at the lower end of the purification tower body, and an air inlet pipe is provided at one end of the connecting seat, and the air inlet pipe is used to connect to the combustion furnace.

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

[0013] 1. During use of the purification equipment of the utility model, the paraquat synthesis tail gas discharged from the combustion furnace is introduced into the interior of the purification tower body through the air intake pipe, the tail gas is collected through the air collecting hood, and the sulfide content in the tail gas is detected by the monitoring sensor above the air collecting hood, so as to judge the washing liquid material through the PLC module, adjust the boost pump, thereby reducing the consumption of detergent, so as to save energy, thereby improving the use effect, facilitating long-term use, and having better intelligent effect, thereby improving the functionality of the equipment.

[0014] 2. The purification equipment of the utility model detects the sulfide content in the exhaust gas through the monitoring sensor. When it is detected that the sulfide content is too high, the solenoid valve is closed through the PLC module, the electric cylinder is driven to extend and retract, and the lifting partition is driven to move. The lifting partition drives the exhaust gas inside the purification tower body to move, so that the sulfide is fully mixed with the washing liquid, the purification effect is improved, the intelligence is better, the functionality is good, and it is conducive to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an axonometric view of the front view of the utility model;

[0016] Figure 2 It is an axonometric view of the utility model from above;

[0017] Figure 3 This is a front view of the internal structure of the utility model;

[0018] Figure 4 This is a top view of the internal structure of the utility model.

[0019] In the figure: 1. purification tower body; 101. air outlet pipe; 102. connecting seat; 103. air inlet pipe; 2. exhaust fan; 3. spray rack; 301. material storage box; 302. booster pump; 303. liquid inlet; 4. lifting partition; 401. collecting port; 402. solenoid valve; 403. monitoring sensor; 404. air collecting hood; 405. electric cylinder. DETAILED DESCRIPTION

[0020] 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.

[0021] In order to solve the problems of existing purification devices in actual use, such as single structure, high energy consumption and few functions, please refer to Figure 1 - Figure 4 , this embodiment provides the following technical solutions:

[0022] A paraquat synthesis tail gas intelligent purification device comprises a purification tower body 1, a spray rack 3 is installed in the middle of the purification tower body 1, a storage box 301 is installed outside the spray rack 3, a washing liquid for purifying tail gas is arranged inside the storage box 301, a booster pump 302 is installed outside the storage box 301, a lifting baffle 4 is installed inside the purification tower body 1, a gas collecting hood 404 is installed at the lower end of the lifting baffle 4, an electric cylinder 405 is installed at the lower end of the gas collecting hood 404, and an integrally formed collecting port 401 is arranged at the upper end of the lifting baffle 4, tail gas is collected through the gas collecting hood 404, and the sulfide content in the tail gas is detected by the monitoring sensor 403 above the gas collecting hood 404, so that the washing liquid material is judged through the PLC module, and the booster pump 302 is adjusted, so as to reduce the consumption of detergent, so as to save energy, thereby improving the use effect, facilitating long-term use, and having better intelligent effect, thereby improving the functionality of the equipment.

[0023] There are six spray racks 3, and the outside of the six spray racks 3 is provided with a liquid inlet 303. One end of the booster pump 302 is installed with the liquid inlet 303. One end of the booster pump 302 extends to the purification tower body 1 and is sealed with the purification tower body 1. The washing liquid is introduced through the liquid inlet 303 to flush and clean the exhaust gas.

[0024] A monitoring sensor 403 is installed inside the lifting partition 4. The monitoring sensor 403 is used to monitor the sulfide content of the exhaust gas inside the lifting partition 4. The monitoring sensor 403 includes a plc module, and the plc module is electrically connected to the electric cylinder 405 and the boost pump 302.

[0025] Specifically, during the use of the purification equipment, the exhaust gas is collected through the air collecting hood 404, and the sulfide content in the exhaust gas is detected by the monitoring sensor 403 above the air collecting hood 404, so that the amount of washing liquid used is determined by the PLC module, and the boost pump 302 is adjusted to reduce the consumption of detergent, so as to save energy, thereby improving the use effect, facilitating long-term use, and having better intelligent effects, thereby improving the functionality of the equipment.

[0026] In order to solve the problem that the purification device in the prior art has poor purification effect on the tail gas during actual use, which affects the use, please refer to Figure 1 - Figure 4 , provide the following technical questions:

[0027] An exhaust pipe 101 is installed above the purification tower body 1, and an exhaust fan 2 is installed inside the exhaust pipe 101. The exhaust fan 2 is sealed and connected to the purification tower body 1 through a sealing ring. During use, the exhaust gas is extracted by the exhaust fan 2, and the exhaust gas purified by the exhaust fan 2 is discharged through the exhaust pipe 101. A connecting seat 102 is installed at the lower end of the purification tower body 1, and an air inlet pipe 103 is provided at one end of the connecting seat 102. The air inlet pipe 103 is used to connect to the combustion furnace, and the paraquat synthesis exhaust gas discharged from the combustion furnace is introduced into the interior of the purification tower body 1 through the air inlet pipe 103.

[0028] The lifting partition 4 is slidably connected to the purification tower body 1 through a slide groove, and the two ends of the electric cylinder 405 are slidably connected to the lifting partition 4 and the purification tower body 1 respectively. A solenoid valve 402 is installed inside the lifting partition 4. The solenoid valve 402 is used to switch the collecting port 401. The solenoid valve 402 is electrically connected to the plc module. The monitoring sensor 403 adopts an RS485 industrial sulfur dioxide transmitter. The sulfide content in the exhaust gas is detected by the monitoring sensor 403. After detecting that the sulfide content is too high, the solenoid valve 402 is closed through the plc module, and the electric cylinder 405 is driven to retract and extend, driving the lifting partition 4 to move. The lifting partition 4 drives the exhaust gas inside the purification tower body 1 to move, thereby fully mixing the sulfide with the washing liquid, improving the purification effect, being more intelligent, and having good functionality, which is conducive to long-term use.

[0029] Specifically, the sulfide content in the exhaust gas is detected by the monitoring sensor 403. When it is detected that the sulfide content is too high, the solenoid valve 402 is closed through the PLC module, and the electric cylinder 405 is driven to extend and retract, thereby driving the lifting baffle 4 to move. The lifting baffle 4 drives the exhaust gas inside the purification tower body 1 to move, thereby fully mixing the sulfide with the washing liquid, improving the purification effect, being more intelligent, and having good functionality, which is conducive to long-term use.

[0030] Working principle: When in use, the paraquat synthesis tail gas discharged from the combustion furnace is introduced into the purification tower body 1 through the air inlet pipe 103, and the tail gas is collected through the air collecting hood 404. The sulfide content in the tail gas is detected by the monitoring sensor 403 above the air collecting hood 404, so that the washing liquid material is judged through the PLC module, and the booster pump 302 is adjusted to reduce the consumption of detergent, so as to save energy, thereby improving the use effect, which is conducive to long-term use, and the intelligent effect is better, and the functionality of the equipment is improved. The sulfide content in the tail gas is detected by the monitoring sensor 403. After detecting that the sulfide content is too high, the solenoid valve 402 is closed through the PLC module, and the electric cylinder 405 is driven to retract and move, driving the lifting partition 4 to move. The lifting partition 4 drives the tail gas inside the purification tower body 1 to move, so as to fully mix the sulfide with the washing liquid, improve the purification effect, and have better intelligence and good functionality. The tail gas is extracted by the exhaust fan 2, and the tail gas purified by the exhaust fan 2 is discharged through the outlet pipe 101.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] 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 paraquat synthesis tail gas intelligent purification device, comprising a purification tower body (1), characterized in that: A spray rack (3) is installed in the middle of the purification tower body (1), a material storage box (301) is installed outside the spray rack (3), a washing liquid for purifying tail gas is arranged inside the material storage box (301), a booster pump (302) is installed outside the material storage box (301), a lifting partition (4) is installed inside the purification tower body (1), an air collecting hood (404) is installed at the lower end of the lifting partition (4), an electric cylinder (405) is installed at the lower end of the air collecting hood (404), and an integrally formed collecting port (401) is arranged at the upper end of the lifting partition (4).

2. The intelligent purification device for paraquat synthesis tail gas according to claim 1, characterized in that: An air outlet pipe (101) is installed above the purification tower body (1), an exhaust fan (2) is installed inside the air outlet pipe (101), and the exhaust fan (2) is sealed and connected to the purification tower body (1) via a sealing ring.

3. The intelligent purification device for paraquat synthesis tail gas according to claim 1, characterized in that: Six spray racks (3) are provided, and each of the six spray racks (3) is provided with a liquid inlet (303) on its outside. One end of the booster pump (302) is provided with a liquid inlet (303), and one end of the booster pump (302) extends to the purification tower body (1) and is sealedly connected to the purification tower body (1).

4. The intelligent purification device for paraquat synthesis tail gas according to claim 1, characterized in that: The lifting baffle (4) is slidably connected to the purification tower body (1) via a slide groove, and the two ends of the electric cylinder (405) are slidably connected to the lifting baffle (4) and the purification tower body (1) respectively.

5. The intelligent purification equipment for paraquat synthesis tail gas according to claim 1, characterized in that: A monitoring sensor (403) is installed inside the lifting baffle (4), and the monitoring sensor (403) is used to monitor the sulfide content of the exhaust gas inside the lifting baffle (4). The monitoring sensor (403) includes a plc module, and the plc module is electrically connected to the electric cylinder (405) and the boost pump (302). A solenoid valve (402) is installed inside the lifting baffle (4), and the solenoid valve (402) is used to switch the collecting port (401). The solenoid valve (402) is electrically connected to the plc module.

6. The intelligent purification equipment for paraquat synthesis tail gas according to claim 1, characterized in that: A connecting seat (102) is installed at the lower end of the purification tower body (1), and an air inlet pipe (103) is provided at one end of the connecting seat (102). The air inlet pipe (103) is used to connect to the combustion furnace.

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