Emergency termination device for acrylic monomer storage tank

Abstract

The utility model relates to the technical field of chemical storage devices, in particular to an emergency termination device of an acrylic monomer storage tank, which comprises a storage tank body, a telescopic spray pipe is arranged at the top in the storage tank body, the telescopic spray pipe comprises a plurality of pipe bodies which are sleeved in sequence, and a release membrane is arranged at the bottom end of the innermost pipe body. The top of the telescopic spray pipe is connected with an inhibitor outlet in the upper portion of an inhibitor tank through an inhibitor conveying pipe and a connecting hose in sequence, an inhibitor is contained in the inhibitor tank, and an air inlet is formed in the top of the inhibitor tank and connected with an air bottle through a high-pressure hose. The inhibitor conveying pipe and the connecting hose are connected through a dry type quick connector. According to the utility model, abnormal conditions such as polymerization reaction and the like can be treated in time, the problem that the acrylic monomers are difficult to treat after polymerization reaction at present is solved, personnel safety and property loss are protected, and the risk problem of long-term storage of acrylic acid is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical storage devices, specifically to an emergency termination device for acrylic monomer storage tanks. Background Technology

[0002] Acrylic monomers are highly reactive media, prone to spontaneous polymerization and explosions. Acrylic acids have wide industrial applications, often polymerizing acrylates into polymers or copolymers during use. For example, butyl acrylate (as well as methyl acrylate, ethyl acrylate, etc.) is a soft monomer that can be combined with various hard monomers such as methyl methacrylate, styrene, and vinyl acetate to produce hundreds of acrylic resin products, widely used in coatings, adhesives, acrylic fiber modification, plastic modification, fiber and fabric processing, paper treatment agents, leather processing, and acrylic rubber, among many other applications. Currently, after spontaneous polymerization occurs in industrial acrylate monomer storage tanks, the following measures are generally taken: constructing dikes to reduce the danger of leakage; covering with foam to reduce vapor hazards; cooling and diluting vapors with sprayed water to protect personnel and dilute the leaked material into non-flammable substances; and transferring the material to tank trucks or special collectors using explosion-proof pumps for recovery or disposal at waste treatment facilities. When an acrylic acid storage tank leaks, it is generally handled by the fire department or professional personnel. Emergency responders must wear self-contained positive pressure breathing apparatus, avoid direct contact with the leaked material, and wear acid and alkali resistant work clothes. These measures are not only complex and cumbersome, but also expose operators to the risk of direct contact with the leaked material, which is detrimental to personal safety. Utility Model Content

[0003] The technical problem this invention aims to solve is to propose an emergency termination device for acrylic monomer storage tanks, which can promptly handle abnormalities such as polymerization reactions, thus solving the current problem of difficult handling of acrylic monomers after polymerization reactions, protecting personnel safety and property losses, and resolving the risk problem of long-term storage of acrylic acid.

[0004] The present invention discloses an emergency termination device for an acrylic monomer storage tank, comprising a storage tank body, a telescopic nozzle at the top of the storage tank body, the telescopic nozzle comprising a plurality of concentric tubes connected in sequence, a release diaphragm at the bottom end of the innermost tube, the top of the telescopic nozzle being connected to the inhibitor outlet at the top of the inhibitor tank via an inhibitor delivery pipe and a connecting hose, the inhibitor tank containing inhibitor, the top of the inhibitor tank having an air inlet connected to a gas cylinder via a high-pressure hose; the inhibitor delivery pipe and the connecting hose being connected via a dry quick connector.

[0005] Preferably, the inhibitor tank is equipped with a safety relief valve at the top and a relief control valve at the bottom.

[0006] Preferably, a pressure gauge is installed on the air inlet.

[0007] Preferably, the gas cylinder is equipped with a cylinder head valve, and the high-pressure hose is equipped with a pressure reducer.

[0008] Preferably, the inhibitor delivery tube is made of stainless steel.

[0009] Preferably, the telescopic nozzle is connected to the inhibitor delivery pipe via a connecting flange. Among the several pipes, the outermost pipe is the outer pipe, and the innermost pipe is the inner pipe. The bottom end of the inner pipe is provided with a release diaphragm. The middle pipe is located between the outer pipe and the inner pipe. The top of the outer pipe is fixedly connected to the connecting flange. The upper ends of the middle pipe and the inner pipe are both sealed and slidably connected to their adjacent outer pipes. The lower ends of the outer pipe and the middle pipe are provided with inward blocking elements. A gap is left between the lower ends of the outer pipe and the middle pipe and the outer wall of their adjacent outer pipes.

[0010] Preferably, a sealing ring is provided between the upper end of the intermediate tube and the inner tube and the adjacent outer tube.

[0011] Preferably, the upper ends of the intermediate tube and the inner tube extend outward to form a connecting ring, and a sealing ring is provided on the outside of the connecting ring; the blocking member is annular, formed by the lower ends of the outer tube and the intermediate tube extending inward, and the blocking member does not adhere to the outer wall of the adjacent outer tube.

[0012] Preferably, the upper part of the outer tube and the middle tube is provided with a blocking block to prevent the inner tube body from being pushed upward by pressure and losing the seal between the tube bodies.

[0013] Preferably, when the telescopic nozzle is in the retracted state, its bottom is provided with a retractable fixing device to prevent the telescopic nozzle from extending.

[0014] Preferably, the shrink-fitting device is a tearable seal with both ends fixed to the outer wall of the outer tube, and the seal has a pre-cut.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: Under normal storage conditions, the inhibitor delivery pipe and the connecting hose are disconnected by a dry quick connector. When abnormalities such as polymerization reactions occur in the storage tank, the dry quick connector is manually inserted to connect the inhibitor delivery pipe and the connecting hose. High-pressure gas is released from the gas cylinder into the high-pressure hose and enters the inhibitor tank through the gas inlet, forcing the inhibitor out from the inhibitor outlet. The inhibitor then enters the telescopic nozzle inside the storage tank through the connecting hose and the inhibitor delivery pipe. The telescopic nozzle can extend to the lower part of the liquid surface and rupture the release diaphragm under pressure, spraying out the inhibitor and preventing the monomer from continuing to polymerize.

[0016] This invention can penetrate below the liquid surface to spray inhibitors, effectively preventing polymerization from occurring in areas with poor flow, and making the treatment more timely and thorough.

[0017] This invention solves the problem of difficult handling of acrylic monomers after polymerization, enabling timely and rapid processing, protecting personnel safety and property damage, and mitigating the risks associated with long-term storage of acrylic acid to a certain extent. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the emergency termination device for acrylic monomer storage tanks according to this utility model.

[0019] Figure 2 This is a schematic diagram of the telescopic nozzle in its extended state.

[0020] Figure 3 This is a schematic diagram of the telescopic nozzle in its retracted state.

[0021] In the diagram: 1. Tank body; 2. Telescopic nozzle; 3. Pipe body; 4. Release diaphragm; 5. Inhibitor delivery pipe; 6. Connecting hose; 7. Inhibitor tank; 8. Inhibitor; 9. Air inlet; 10. High-pressure hose; 11. Gas cylinder; 12. Dry quick connector; 13. Safety relief valve; 14. Relief control valve; 15. Pressure gauge; 16. Cylinder head valve; 17. Pressure reducer; 18. Connecting flange; 19. Sealing ring; 20. Blocking element; 21. Blocking block; 22. Seal. Detailed Implementation

[0022] The present invention will now be described clearly and completely with reference to the accompanying drawings.

[0023] like Figure 1 As shown, the emergency termination device for an acrylic monomer storage tank includes a storage tank body 1. A telescopic nozzle 2 is provided at the top of the storage tank body 1. The telescopic nozzle 2 includes several concentric tubes 3 connected in sequence. The bottom end of the innermost tube 3 is provided with a release diaphragm 4. The top of the telescopic nozzle 2 is connected to the inhibitor outlet at the top of the inhibitor tank 7 via an inhibitor delivery pipe 5 and a connecting hose 6. The inhibitor tank 7 contains inhibitor 8. The top of the inhibitor tank 7 is provided with an air inlet 9, which is connected to a gas cylinder 11 via a high-pressure hose 10. The inhibitor delivery pipe 5 and the connecting hose 6 are connected via a dry quick connector 12.

[0024] The inhibitor tank 7 is equipped with a safety relief valve 13 at the top and a relief control valve 14 at the bottom. The relief control valve 14 is opened or closed when the system is under maintenance or when the inhibitor 8 is replaced.

[0025] A pressure gauge 15 is installed on the air inlet 9.

[0026] The gas cylinder 11 is equipped with a cylinder head valve 16, and the high-pressure hose 10 is equipped with a pressure reducer 17.

[0027] The inhibitor delivery tube 5 is made of stainless steel.

[0028] Furthermore, such as Figure 2As shown, the telescopic nozzle 2 is connected to the inhibitor delivery pipe 5 via the connecting flange 18. Among the several pipes 3, the outermost pipe 3 is the outer pipe, and the innermost pipe 3 is the inner pipe. The bottom end of the inner pipe is provided with a release diaphragm 4. The middle pipe is between the outer pipe and the inner pipe. The top of the outer pipe is fixedly connected to the connecting flange 18. The upper ends of the middle pipe and the inner pipe are sealed and slidably connected to the adjacent pipes 3 on their outer sides. The lower ends of the outer pipe and the middle pipe are provided with a blocking element 20 inward. There is a gap between the lower ends of the outer pipe and the middle pipe and the outer wall of the adjacent pipes 3 on their outer sides.

[0029] A sealing ring 19 is provided between the upper end of the intermediate tube and the inner tube and the adjacent outer tube 3.

[0030] The upper ends of the intermediate tube and the inner tube extend outward to form a connecting ring, and a sealing ring 19 is provided on the outside of the connecting ring; the blocking member 20 is ring-shaped and is formed by extending inward from the lower ends of the outer tube and the intermediate tube, and the blocking member 20 does not adhere to the outer wall of the adjacent outer tube 3.

[0031] The upper part of the outer tube and the middle tube is provided with a blocking block 21 to prevent the inner tube body 3 from being pushed upward by pressure and losing the seal between the tube bodies 3.

[0032] like Figure 3 As shown, when the telescopic nozzle 2 is in the retracted state, its bottom is provided with a retraction fixing device to prevent the telescopic nozzle 2 from extending. The retraction fixing device is a tearable seal 22, with both ends of the seal 22 fixed to the outer wall of the outer tube, and the seal 22 has a pre-cut.

[0033] The working process is as follows: When the storage tank body 1 is in normal storage state, the inhibitor delivery pipe 5 and the connecting hose 6 are disconnected through the dry quick connector 12. When an abnormality such as polymerization occurs in the storage tank body 1, the dry quick connector 12 is manually inserted to connect the inhibitor delivery pipe 5 and the connecting hose 6. The cylinder valve 16 is opened, and the high-pressure gas in the gas cylinder 11 enters the high-pressure hose 10 through the pressure reducer 17 and enters the inhibitor tank 7 through the air inlet 9, forcing the inhibitor 8 out from the inhibitor outlet. The inhibitor enters the telescopic nozzle 2 in the storage tank body 1 through the connecting hose 6 and the inhibitor delivery pipe 5. The telescopic nozzle 2 is in a contracted state. After the high-pressure gas enters the pipe body 3 along with the inhibitor, a thrust is applied to the pipe body 3, causing the pipe body 3 to slide relative to each other, causing the telescopic nozzle 2 to extend and break through the seal 22, so that the telescopic nozzle 2 extends to the bottom of the storage tank body 1. When the pressure reaches and exceeds the set pressure of the release diaphragm 4, the release diaphragm 4 is broken, and the inhibitor is sprayed out from the inner tube, preventing the monomer from continuing to polymerize through the reaction. Because polymers may form in areas where liquid flow is impeded, such as below the liquid surface, it is usually difficult to inhibit polymerization if only the inhibitor is sprayed at the top. If polymerization is not stopped in time, it will still occur below the liquid surface and may even clump together. The telescopic nozzle 2 can extend below the liquid surface to spray the inhibitor, effectively preventing polymerization from occurring in areas where flow is impeded.

Claims

1. An emergency termination device for an acrylic monomer storage tank, comprising a tank body (1), characterized in that, The storage tank body (1) is equipped with a telescopic nozzle (2) at the top. The telescopic nozzle (2) includes several tubes (3) that are connected in sequence. The innermost tube (3) has a release diaphragm (4) at the bottom. The top of the telescopic nozzle (2) is connected to the inhibitor outlet at the top of the inhibitor tank (7) through the inhibitor delivery pipe (5) and the connecting hose (6). The inhibitor tank (7) contains inhibitor (8). The top of the inhibitor tank (7) is equipped with an air inlet (9). The air inlet (9) is connected to the gas cylinder (11) through the high-pressure hose (10). The inhibitor delivery pipe (5) and the connecting hose (6) are connected through a dry quick connector (12).

2. The emergency termination device for acrylic monomer storage tanks according to claim 1, characterized in that, The inhibitor tank (7) is equipped with a safety relief valve (13) at the top and a relief control valve (14) at the bottom.

3. The emergency termination device for acrylic monomer storage tanks according to claim 1, characterized in that, A pressure gauge (15) is installed on the air inlet (9).

4. The emergency termination device for acrylic monomer storage tanks according to claim 1, characterized in that, The gas cylinder (11) is equipped with a cylinder head valve (16), and the high-pressure hose (10) is equipped with a pressure reducer (17).

5. The emergency termination device for acrylic monomer storage tanks according to claim 1, characterized in that, The telescopic nozzle (2) is connected to the inhibitor delivery pipe (5) via the connecting flange (18). Among the several pipe bodies (3), the outermost pipe body (3) is the outer pipe, and the innermost pipe body (3) is the inner pipe. The bottom end of the inner pipe is provided with a release diaphragm (4). The middle pipe is between the outer pipe and the inner pipe. The top of the outer pipe is fixedly connected to the connecting flange (18). The upper ends of the middle pipe and the inner pipe are sealed and slidably connected to the adjacent pipe body (3) on the outside. The lower ends of the outer pipe and the middle pipe are provided with a blocking element (20) inward. There is a gap between the lower ends of the outer pipe and the middle pipe and the outer wall of the adjacent pipe body (3) on the outside.

6. The emergency termination device for acrylic monomer storage tanks according to claim 5, characterized in that, A sealing ring (19) is provided between the upper end of the intermediate tube and the inner tube and the adjacent outer tube (3).

7. The emergency termination device for acrylic monomer storage tanks according to claim 6, characterized in that, The upper ends of the middle tube and the inner tube extend outward to form a connecting ring, and a sealing ring (19) is provided on the outside of the connecting ring; the blocking member (20) is ring-shaped and is formed by extending inward from the lower ends of the outer tube and the middle tube, and the blocking member (20) does not adhere to the outer wall of the adjacent outer tube (3).

8. The emergency termination device for acrylic monomer storage tanks according to claim 7, characterized in that, The upper part of the outer tube and the middle tube is provided with a blocking block (21).

9. The emergency termination device for acrylic monomer storage tanks according to claim 8, characterized in that, When the telescopic nozzle (2) is in the retracted state, its bottom is provided with a retractable fixing device to prevent the telescopic nozzle (2) from extending.

10. The emergency termination device for acrylic monomer storage tanks according to claim 9, characterized in that, The shrink-fitting device is a tearable seal (22), with both ends of the seal (22) fixed to the outer wall of the outer tube, and a pre-cut on the seal (22).

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