Hydrogen fluoride sampling device in alkylation reaction system

Abstract

The invention discloses a hydrogen fluoride sampling device in an alkylation reaction system, and relates to the technical field of hydrogen fluoride sampling, the hydrogen fluoride sampling device comprises a reaction furnace, a butt joint assembly and a collection assembly, the outer end of the top of the reaction furnace is connected with a collection pipe, the tail end of the collection pipe is provided with the butt joint assembly, and the bottom end of the butt joint assembly is connected with a butt joint. When hydrogen fluoride leaks at the joint of the connector and the butt joint, leaked hydrogen fluoride can be sucked into the suction pipe due to the influence of the suction force at the adsorption tank, and hydrogen fluoride gas sucked into the suction pipe can enter the first ventilation channel along with the suction force to be in contact with copper salt in the copper salt net; the hydrogen fluoride reacts with the copper salt to generate a copper fluoride precipitate, and the copper fluoride is green, so that a worker can effectively judge whether the hydrogen fluoride leaks or not only by observing whether the copper salt changes color or not through the first ventilation channel made of the transparent polyethylene material in the collection process, and only non-toxic hydrogen is left in the hydrogen fluoride after the hydrogen fluoride reacts with the copper salt.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen fluoride sampling, in particular to a hydrogen fluoride sampling device in an alkylation reaction system. Background Art

[0002] The alkylation reaction system refers to the process of introducing an alkyl group into an organic compound using an alkylating agent. The alkylation reaction system is widely used in the petroleum industry, the pharmaceutical industry and other fields. In the alkylation reaction system, hydrogen fluoride is a commonly used catalyst, and hydrogen fluoride gas is usually prepared by introducing calcium fluoride and concentrated sulfuric acid into a reactor for a ratio reaction.

[0003] Since hydrogen fluoride gas is highly corrosive and toxic, hydrogen fluoride sampling devices on the market usually use the upward air discharge method to collect hydrogen fluoride to avoid leakage (the density of hydrogen fluoride is greater than that of air (1.7 g / L, air is about 1.29 g / L), the opening of the collection container is facing downward, and the difference in gas density is used for collection). However, the collection efficiency of the upward air discharge method is low, which results in most hydrogen fluoride sampling devices on the market having a slow sampling speed. In addition, hydrogen fluoride sampling devices on the market usually cannot effectively alarm and clean up the leaked hydrogen fluoride gas when hydrogen fluoride leaks, which seriously affects the life safety of workers.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a hydrogen fluoride sampling device in an alkylation reaction system is proposed. Summary of the invention

[0005] The object of the present invention is to provide a hydrogen fluoride sampling device in an alkylation reaction system to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a hydrogen fluoride sampling device in an alkylation reaction system, comprising a reactor, a docking assembly and a collection assembly, wherein the top outer end of the reactor is connected to a collection tube, and the end of the collection tube is provided with a docking assembly, the bottom end of the docking assembly is connected to a docking joint, and the bottom end of the docking joint is connected to an injection tube, and the end of the injection tube is provided with a collection assembly, the collection assembly comprises a collection bottle, an air outlet, a piston block, a first ventilation pipe, a first air channel, a copper salt net, an air pump and a suction port, the outer end of the collection bottle is provided with an air outlet, and the piston block is arranged inside the collection bottle, the bottom left end of the collection bottle is connected to the first ventilation pipe, and the end of the first ventilation pipe is connected to the first air channel, the copper salt net is arranged inside the first air channel, and the outer end of the first air channel is provided with an air pump, the outer end of the air pump is connected with the suction port, and the outer end of the collection bottle is provided with a cleaning assembly.

[0007] Furthermore, the docking assembly includes a docking seat, a docking head, an adsorption groove and a suction pipe. The bottom outer end of the docking seat is provided with a docking head, the inner side of the docking head is provided with an adsorption groove, and the outer end of the docking seat is connected to the suction pipe.

[0008] Furthermore, the outer contour of the connector matches the inner contour of the butt joint, and the connector is adsorbed and connected to the butt joint through an adsorption groove.

[0009] Furthermore, the adsorption tank is communicated with the suction pipe, and the suction pipe is communicated with the first air passage.

[0010] Furthermore, the collection bottle is connected to the first air channel through a first ventilation tube, and the first air channel is made of transparent polyethylene material.

[0011] Furthermore, the first air duct is fixedly connected to the copper salt net, and the copper salt net is wrapped with copper salt.

[0012] Furthermore, the cleaning component includes a second air duct, a second air pipe, a pressure pump, an air control box, a first pressure pipe, an electric control push rod, a pushing piston, a piston tube, a feed port, a second pressure pipe and a cleaning pipe. The outer end of the second air duct is connected to the second air pipe, and the outer end of the second air duct is provided with a pressure pump, and the inner middle end of the second air duct is provided with an air control box, the top outer end of the air control box is connected to the first pressure pipe, the outer end of the second air duct is provided with an electric control push rod, and the output end of the electric control push rod is connected to the pushing piston, the outer end of the pushing piston is provided with a piston tube, and the top outer side of the piston tube is provided with a feed port, the bottom outer side of the air control box is provided with a second pressure pipe, and the top outer side of the second air duct is connected to the cleaning pipe.

[0013] Furthermore, the collection bottle is connected to the second air duct through a second ventilation pipe, and the collection bottle, the second air duct and the first air duct are an integrated structure.

[0014] Furthermore, the pressure pump is connected to the air control box, and the air control box is connected to the second air duct through a second pressure pipe.

[0015] Furthermore, the piston tube is connected to the first pressurizing tube, and the first pressurizing tube is connected to the cleaning tube, and the cleaning tube is connected to the filling tube.

[0016] The present invention provides a hydrogen fluoride sampling device in an alkylation reaction system, which has the following beneficial effects: 1. In the process of collecting hydrogen fluoride gas, the suction force of the vacuum pump can be transmitted to the inside of the collection bottle through the first ventilation pipe, and the suction force can drive the piston block to move downward. During the downward movement of the piston block, the air flow inside the collection tube and the injection tube can be promoted, so that the hydrogen fluoride gas can be more easily drawn into the collection bottle for storage by the air flow. In addition, the suction force of the vacuum pump during the suction process can be transmitted to the suction pipe through the copper salt net. Because the suction pipe is connected with the adsorption tank, and the adsorption tank is attached to the inner surface of the docking joint after the connector and the docking joint are docked, through this design, the connector and the docking joint can be more tightly connected by adsorption force, which can effectively reduce the probability of hydrogen fluoride leakage during the collection process.

[0017] 2. In the present invention, if hydrogen fluoride leaks at the joint between the connector and the butt joint, the leaked hydrogen fluoride will be sucked into the suction pipe due to the influence of the suction force at the adsorption tank, which can effectively prevent the hydrogen fluoride gas from leaking out. The hydrogen fluoride gas sucked into the suction pipe will enter the first airway with the suction force and contact the copper salt in the copper salt net. After the hydrogen fluoride contacts the copper salt, it will react with the copper salt to produce copper fluoride precipitation, and the copper fluoride is green. Through this design, during the collection process, the staff only needs to observe whether the copper salt changes color through the first airway made of transparent polyethylene material to effectively determine whether the hydrogen fluoride has leaked. After the hydrogen fluoride reacts with the copper salt, only non-toxic hydrogen is left. Through this design, the life safety of the staff during the hydrogen fluoride collection process can be greatly guaranteed.

[0018] 3. After the piston block of the present invention moves to the bottom of the collection bottle, the staff closes the valve at the filling pipe and opens the air outlet to connect the collection device with the air outlet. The air control box opens the valve at the second pressurizing pipe, and the pressurizing pump works at the same time, so that the high-pressure gas can enter the bottom of the collection bottle through the second air channel and the second air pipe. After being pushed by the high-pressure gas, the piston block will move upward. At this time, because the valve at the filling pipe is closed, the collected hydrogen fluoride can flow into the collection device through the air outlet during the upward movement of the piston block, so that the collection device can collect the hydrogen fluoride. The piston block after moving upward can be moved downward again by the operation of the vacuum pump. Through this operation, the equipment can efficiently guide the flow of hydrogen fluoride without leakage, thereby improving the hydrogen fluoride collection efficiency of the equipment.

[0019] 4. In the present invention, after the collection of hydrogen fluoride gas is completed, the staff pours sodium hydroxide solution into the feed port, so that the sodium hydroxide solution can be stored in the piston tube. At the same time, the staff closes the valve at the filling pipe, and the gas control box opens the valve at the first pressurized pipe. At this time, the piston is driven to move by the electric control push rod, so that the sodium hydroxide solution can enter the first pressurized pipe. Through the operation of the booster pump, the sodium hydroxide solution can flow through the first pressurized pipe, the filling pipe, the collection pipe, and enter the reactor. Sodium hydroxide and hydrogen fluoride will form sodium fluoride and water after contact. Through the above operation, the equipment can use the collection component to clean up the residual hydrogen fluoride after the collection is completed, which improves the functionality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a hydrogen fluoride sampling device in an alkylation reaction system of the present invention; Figure 2 This is a schematic diagram of the structure of a docking assembly of a hydrogen fluoride sampling device in an alkylation reaction system of the present invention; Figure 3 This is a schematic diagram of the structure of a docking joint of a hydrogen fluoride sampling device in an alkylation reaction system of the present invention; Figure 4 It is a schematic diagram of the internal structure of the first air vent and the second air vent of a hydrogen fluoride sampling device in an alkylation reaction system of the present invention; Figure 5 It is a schematic diagram of the overall cross-sectional structure of a hydrogen fluoride sampling device in an alkylation reaction system of the present invention; Figure 6 A hydrogen fluoride sampling device in an alkylation reaction system of the present invention Figure 5 The enlarged structural diagram at A in the middle; Figure 7 The present invention is a schematic diagram of the internal structure of a collection bottle of a hydrogen fluoride sampling device in an alkylation reaction system.

[0021] In the figure: 1, reactor; 2, collection tube; 3, docking assembly; 301, docking seat; 302, connector; 303, adsorption tank; 304, suction tube; 4, docking head; 5, filling tube; 6, collection assembly; 601, collection bottle; 602, air outlet; 603, piston block; 604, first ventilation pipe; 605, first ventilation channel; 606, copper salt net; 607, vacuum pump; 608, suction port; 7, cleaning assembly; 701, second ventilation channel; 702, second ventilation pipe; 703, pressure pump; 704, air control box; 705, first pressure pipe; 706, electric control push rod; 707, push piston; 708, piston tube; 709, feed port; 710, second pressure pipe; 711, cleaning tube. DETAILED DESCRIPTION

[0022] See also Figures 1 to 7 The present invention provides a technical solution: a hydrogen fluoride sampling device in an alkylation reaction system, comprising a reactor 1, a docking assembly 3 and a collection assembly 6, wherein the top outer end of the reactor 1 is connected to a collection tube 2, and the end of the collection tube 2 is provided with a docking assembly 3, the bottom end of the docking assembly 3 is connected to a docking head 4, and the bottom end of the docking head 4 is connected to an injection tube 5, and the end of the injection tube 5 is provided with a collection assembly 6, and the collection assembly 6 comprises a collection bottle 601, an air outlet 602, a piston block 603, a first ventilation pipe 604, a first ventilation channel 605, and a copper salt net 60 6. An air pump 607 and a suction port 608. An air outlet 602 is provided at the outer end of the collection bottle 601, and a piston block 603 is arranged inside the collection bottle 601. The left end of the bottom of the collection bottle 601 is connected to a first ventilation pipe 604, and the end of the first ventilation pipe 604 is connected to a first air channel 605. A copper salt net 606 is arranged inside the first air channel 605, and an air pump 607 is arranged at the outer end of the first air channel 605. The outer end of the air pump 607 is connected to a suction port 608, and a cleaning component 7 is arranged at the outer end of the collection bottle 601.

[0023] See also Figures 1 to 7The docking assembly 3 includes a docking seat 301, a docking head 302, an adsorption groove 303 and a suction pipe 304. The docking seat 301 is provided with a docking head 302 at the bottom outer end, and the adsorption groove 303 is provided on the inner side of the docking head 302. The outer end of the docking seat 301 is connected with the suction pipe 304. The outer contour of the docking head 302 matches the inner contour of the docking head 4, and the docking head 302 is adsorbed and connected to the docking head 4 through the adsorption groove 303. The adsorption groove 303 is connected to the suction pipe 304, and the suction pipe 304 is connected to the first airway 605. The collection bottle 60 1 is connected to the first air passage 605 through the first air pipe 604, and the first air passage 605 is made of transparent polyethylene material, the first air passage 605 is fixedly connected to the copper salt net 606, and the copper salt is wrapped inside the copper salt net 606, the cleaning component 7 includes a second air passage 701, a second air pipe 702, a pressure pump 703, an air control box 704, a first pressure pipe 705, an electric control push rod 706, a push piston 707, a piston pipe 708, a feed port 709, a second pressure pipe 710 and a cleaning pipe 711, and the outer end of the second air passage 701 is connected to A second ventilation pipe 702 is provided, and a pressure pump 703 is arranged at the outer end of the second ventilation channel 701, and an air control box 704 is arranged at the inner middle end of the second ventilation channel 701, and the top outer end of the air control box 704 is connected to the first pressure pipe 705, an electric control push rod 706 is arranged at the outer end of the second ventilation channel 701, and the output end of the electric control push rod 706 is connected to a push piston 707, and a piston tube 708 is arranged at the outer end of the push piston 707, and a feed port 709 is opened on the top outer side of the piston tube 708, and a second pressure pipe 710 is opened on the bottom outer side of the air control box 704 , a cleaning pipe 711 is connected to the outer side of the top of the second air passage 701, the collection bottle 601 is connected to the second air passage 701 through the second air passage 702, and the collection bottle 601 is an integrated structure with the second air passage 701 and the first air passage 605, the pressure pump 703 is connected to the air control box 704, and the air control box 704 is connected to the second air passage 701 through the second pressure pipe 710, the piston tube 708 is connected to the first pressure pipe 705, and the first pressure pipe 705 is connected to the cleaning pipe 711, and the cleaning pipe 711 is connected to the filling pipe 5; The specific operation is as follows. After the staff completes the proportioning of calcium fluoride and concentrated sulfuric acid and places them into the reactor 1, the staff closes the reactor 1 and docks the collection tube 2 at the outer end of the reactor 1 with the docking joint 4 through the connector 302, so that the collection tube 2 can be docked with the injection tube 5. After the calcium fluoride reacts with the concentrated sulfuric acid, hydrogen fluoride gas is formed. After the hydrogen fluoride gas is generated, it can flow through the collection tube 2 and the injection tube 5 and enter the collection bottle 601 for storage. During the process of collecting hydrogen fluoride gas, the equipment works through the vacuum pump 607, and the suction force can be transmitted to the inside of the collection bottle 601 through the first ventilation pipe 604. The suction force can drive the piston block 603 to move downward, and the process of the piston block 603 moving downward can promote the air flow inside the collection tube 2 and the injection tube 5. , which allows the hydrogen fluoride gas to be more easily drawn into the collection bottle 601 for storage through the air flow. In addition, the suction force of the vacuum pump 607 during the suction process can be transmitted to the suction tube 304 through the copper salt mesh 606. Since the suction tube 304 is connected to the adsorption tank 303, and the adsorption tank 303 is attached to the inner surface of the docking joint 4 after the connector 302 and the docking joint 4 are docked, through this design, the connector 302 and the docking joint 4 can be connected more tightly by the adsorption force, which can effectively reduce the probability of hydrogen fluoride leakage during the collection process. If hydrogen fluoride leaks at the connection between the connector 302 and the docking joint 4, the leaked hydrogen fluoride will be sucked into the suction tube 304 due to the influence of the suction force at the adsorption tank 303, which can effectively prevent the hydrogen fluoride gas from leaking out. The hydrogen fluoride gas in the inlet pipe 304 will enter the first air channel 605 with the suction force and contact the copper salt in the copper salt net 606. After the hydrogen fluoride contacts the copper salt, it will react with the copper salt to produce copper fluoride precipitation, and the copper fluoride is green. Through this design, during the collection process, the staff only needs to observe whether the copper salt changes color through the first air channel 605 made of transparent polyethylene material to effectively determine whether the hydrogen fluoride has leaked. After the hydrogen fluoride reacts with the copper salt, only non-toxic hydrogen is left. Through this design, the life safety of the staff during the hydrogen fluoride collection process can be greatly guaranteed. After the piston block 603 moves to the bottom of the collection bottle 601, the staff closes the valve at the filling pipe 5 and opens the air outlet 602 to make the collection device After the device is connected to the gas outlet 602, the gas control box 704 opens the valve at the second pressurizing tube 710, and the pressurizing pump 703 works at the same time, so that the high-pressure gas can enter the bottom of the collection bottle 601 through the second air channel 701 and the second air pipe 702. After being pushed by the high-pressure gas, the piston block 603 will move upward. At this time, because the valve at the filling tube 5 is closed, the collected hydrogen fluoride can flow in through the gas outlet 602 during the upward movement of the piston block 603, so that the collection device can collect hydrogen fluoride, and the piston block 603 after moving upward can be moved down again by the operation of the air pump 607. Through this operation, the device can efficiently guide the flow of hydrogen fluoride without leakage, which improves the hydrogen fluoride collection efficiency of the device.In addition, after the collection of hydrogen fluoride gas is completed, the staff pours sodium hydroxide solution into the feed port 709, which can store the sodium hydroxide solution in the piston tube 708. At the same time, the staff closes the valve at the filling tube 5, and the control box 704 opens the valve at the first pressurized tube 705. At this time, the electric control push rod 706 drives the piston 707 to move, so that the sodium hydroxide solution can enter the first pressurized tube 705. Through the operation of the pressure pump 703, the sodium hydroxide solution can flow through the first pressurized tube 705, the filling tube 5, the collection tube 2, and enter the reactor 1. Sodium hydroxide will form sodium fluoride and water after contacting hydrogen fluoride. Through the above operations, the equipment can use the collection component to clean up the residual hydrogen fluoride after the collection is completed, which improves the functionality of the equipment.

[0024] In summary, when the hydrogen fluoride sampling device in the alkylation reaction system is used, the staff first mixes calcium fluoride and concentrated sulfuric acid and places them into the reactor 1, then closes the reactor 1, and docks the collection tube 2 at the outer end of the reactor 1 with the docking joint 4 through the adapter 302, so that the collection tube 2 can be docked with the injection tube 5, and the calcium fluoride and concentrated sulfuric acid react to form hydrogen fluoride gas. After the hydrogen fluoride gas is generated, it can flow through the collection tube 2 and the injection tube 5 and enter the collection bottle 601 for storage; Then, during the process of collecting hydrogen fluoride gas, the device works through the vacuum pump 607, and the suction force can be transmitted to the inside of the collection bottle 601 through the first ventilation pipe 604, and the suction force can drive the piston block 603 to move downward. During the downward movement of the piston block 603, the air inside the collection tube 2 and the injection tube 5 can be promoted to flow, so that the hydrogen fluoride gas can be more easily drawn into the collection bottle 601 for storage by air flow. In addition, the suction force of the vacuum pump 607 during the suction process can be transmitted to the suction pipe 304 through the copper salt net 606. Because the suction pipe 304 is connected with the adsorption tank 303, and the adsorption tank 303 is attached to the inner surface of the docking head 4 after the connector 302 is docked with the docking head 4, through this design, the connector 302 and the docking head 4 can be more tightly connected by the adsorption force, which can effectively reduce the probability of hydrogen fluoride leakage during the collection process; Then, if hydrogen fluoride leaks at the joint of the connector 302 and the docking connector 4, the leaked hydrogen fluoride will be sucked into the suction pipe 304 due to the suction force at the adsorption tank 303, which can effectively prevent the hydrogen fluoride gas from leaking out. The hydrogen fluoride gas sucked into the suction pipe 304 will enter the first air channel 605 with the suction force and contact the copper salt in the copper salt net 606. After the hydrogen fluoride contacts the copper salt, it will react with the copper salt to produce copper fluoride precipitation, and the copper fluoride is green. Through this design, during the collection process, the staff only needs to observe whether the copper salt changes color through the first air channel 605 made of transparent polyethylene material to effectively determine whether the hydrogen fluoride has leaked. After the hydrogen fluoride reacts with the copper salt, only non-toxic hydrogen is left. Through this design, the life safety of the staff during the hydrogen fluoride collection process can be greatly guaranteed; After the piston block 603 moves to the bottom of the collection bottle 601, the staff closes the valve at the injection pipe 5 and opens the air outlet 602 to dock the collection device with the air outlet 602. Then, the air control box 704 opens the valve at the second pressure pipe 710, and the pressure pump 703 works at the same time, so that the high-pressure gas can enter the bottom of the collection bottle 601 through the second air channel 701 and the second air pipe 702. After being pushed by the high-pressure gas, the piston block 603 moves upward. At this time, because the valve at the injection pipe 5 is closed, the collected hydrogen fluoride can flow into the piston block 603 through the air outlet 602 during the upward movement of the piston block 603, so that the collection device collects the hydrogen fluoride. The piston block 603 after moving upward can be moved downward again by the operation of the air pump 607. Through this operation, the device can efficiently guide the flow of hydrogen fluoride without leakage, thereby improving the hydrogen fluoride collection efficiency of the device. Finally, after the collection of hydrogen fluoride gas is completed, the staff pours sodium hydroxide solution into the feed port 709, so that the sodium hydroxide solution can be stored in the piston tube 708. At the same time, the staff closes the valve at the filling tube 5, and the gas control box 704 opens the valve at the first pressurized tube 705. At this time, the piston 707 is driven by the electric push rod 706 to move, so that the sodium hydroxide solution can enter the first pressurized tube 705. Through the operation of the booster pump 703, the sodium hydroxide solution can flow through the first pressurized tube 705, the filling tube 5, the collection tube 2, and enter the reactor 1. Sodium hydroxide and hydrogen fluoride will form sodium fluoride and water after contact. Through the above operations, the equipment can use the collection component to clean up the residual hydrogen fluoride after the collection is completed, which improves the functionality of the equipment.

[0025] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A hydrogen fluoride sampling device in an alkylation reaction system, characterized in that: The invention comprises a reaction furnace (1), a docking assembly (3) and a collection assembly (6), wherein the top outer end of the reaction furnace (1) is connected to a collection tube (2), and the end of the collection tube (2) is provided with a docking assembly (3), the bottom end of the docking assembly (3) is connected to a docking joint (4), and the bottom end of the docking joint (4) is connected to an injection tube (5), and the end of the injection tube (5) is provided with a collection assembly (6), and the collection assembly (6) comprises a collection bottle (601), an air outlet (602), a piston block (603), a first ventilation tube (604), a first ventilation channel (605), a copper salt net (606), an air pump (607) and a suction port (608), an air outlet (602) is provided at the outer end of the collection bottle (601), and a piston block (603) is arranged inside the collection bottle (601), a first ventilation tube (604) is connected to the left end of the bottom of the collection bottle (601), and the end of the first ventilation tube (604) is connected to the first ventilation channel (605), a copper salt net (606) is arranged inside the first ventilation channel (605), and an air pump (607) is arranged at the outer end of the first ventilation channel (605), and the outer end of the air pump (607) is connected to the suction port (608), and a cleaning component (7) is arranged at the outer end of the collection bottle (601).

2. The hydrogen fluoride sampling device in an alkylation reaction system according to claim 1, characterized in that: The docking assembly (3) comprises a docking seat (301), a docking head (302), an adsorption groove (303) and a suction pipe (304); the docking head (302) is provided at the outer end of the bottom of the docking seat (301), the adsorption groove (303) is provided on the inner side of the docking head (302), and the outer end of the docking seat (301) is connected to the suction pipe (304).

3. The hydrogen fluoride sampling device in an alkylation reaction system according to claim 2, characterized in that: The outer contour of the connecting head (302) matches the inner contour of the butt joint (4), and the connecting head (302) is adsorbed and connected to the butt joint (4) via the adsorption groove (303).

4. The hydrogen fluoride sampling device in an alkylation reaction system according to claim 2, characterized in that: The adsorption tank (303) is connected to the suction pipe (304), and the suction pipe (304) is connected to the first air passage (605).

5. The hydrogen fluoride sampling device in an alkylation reaction system according to claim 1, characterized in that: The collection bottle (601) is connected to the first air channel (605) via a first air pipe (604), and the first air channel (605) is made of a transparent polyethylene material.

6. The hydrogen fluoride sampling device in an alkylation reaction system according to claim 1, characterized in that: The first ventilation channel (605) is fixedly connected to the copper salt net (606), and the copper salt net (606) is wrapped with copper salt.

7. The hydrogen fluoride sampling device in an alkylation reaction system according to claim 1, characterized in that: The cleaning assembly (7) comprises a second air passage (701), a second air pipe (702), a pressure pump (703), an air control box (704), a first pressure pipe (705), an electric push rod (706), a push piston (707), a piston tube (708), a feed inlet (709), a second pressure pipe (710) and a cleaning pipe (711), wherein the outer end of the second air passage (701) is connected to the second air pipe (702), the outer end of the second air passage (701) is provided with a pressure pump (703), and the inner middle end of the second air passage (701) is provided with an air control box (711). 704), the top outer end of the air control box (704) is connected to a first pressurized tube (705), the outer end of the second air duct (701) is provided with an electric control push rod (706), and the output end of the electric control push rod (706) is connected to a push piston (707), the outer end of the push piston (707) is provided with a piston tube (708), and the top outer side of the piston tube (708) is provided with a feed port (709), the bottom outer side of the air control box (704) is provided with a second pressurized tube (710), and the top outer side of the second air duct (701) is connected to a cleaning tube (711).

8. The hydrogen fluoride sampling device in an alkylation reaction system according to claim 7, characterized in that: The collection bottle (601) is connected to the second air channel (701) via the second air pipe (702), and the collection bottle (601), the second air channel (701) and the first air channel (605) are an integrated structure.

9. The hydrogen fluoride sampling device in an alkylation reaction system according to claim 7, characterized in that: The pressure pump (703) is connected to the air control box (704), and the air control box (704) is connected to the second air passage (701) via a second pressure pipe (710).

10. The hydrogen fluoride sampling device in an alkylation reaction system according to claim 7, characterized in that: The piston tube (708) is connected to the first pressurizing tube (705), and the first pressurizing tube (705) is connected to the cleaning tube (711), and the cleaning tube (711) is connected to the filling tube (5).

Images