Sealing device for chlorination reaction light source device

Abstract

The utility model provides a sealing device for a chlorination reaction light source device, which comprises a glass tube of the light source device and a sealing assembly, the sealing assembly is fixed with an interface of a reaction kettle, and the sealing assembly comprises an upper end flange, a sealing gasket, a gland, a sleeve, a lower end flange, a sealing bolt and a sealing nut, the upper end flange is a concave surface flange with a downward concave surface, the sealing gasket is arranged in the concave surface of the upper end flange and sleeved on the glass tube, the gland is arranged in the concave surface of the upper end flange and sleeved on the glass tube, the sleeve is arranged on the lower gland of the concave surface of the gland, and the sealing gasket and the concave surface of the lower end flange are the same as the upper end flange; the upper end flange and the lower end flange are connected and pressed through a sealing bolt and a sealing nut; the chlorination reaction light source device is simple in structure, convenient to operate and capable of being sealed and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of chlorination reaction, in particular to a sealing device for a chlorination reaction light source device. Background Art

[0002] The reaction of the reaction liquid in the reactor or reaction tower, using light as a catalyst, and passing chlorine at the bottom is referred to as photochlorination reaction. In order to facilitate the reaction and increase the residence time of chlorine, the height-to-diameter ratio of the equipment is often appropriately increased. The light source of the light source device is placed in a U-shaped special quartz glass tube and inserted into the liquid surface through the reactor or tower interface. Compared with catalytic chlorination reaction, photochlorination reaction has low reaction temperature, small side reactions, stable reaction, low raw material consumption, good quality and high yield. It is a green synthesis technology. The production, sealing and fixing of the light source device are the core contents of realizing photochlorination technology, because the main liquid raw materials such as toluene are flammable and explosive chemicals, chlorine is a highly toxic and asphyxiating gas, and has combustion-supporting properties. The reaction mainly produces hydrogen chloride, which is a volatile, highly corrosive and asphyxiating gas. During the reaction, the materials in the reactor or tower roll violently, which is easy to cause equipment vibration and shaking of the inserted glass tube. If the sealing and fixing design of the light source device are not reasonably made, it is easy to cause the sealing device to leak liquid or gas, the glass tube of the light source to crack or break, affect the operating environment, and even cause serious safety accidents. In the past, steel packing seats and sealing materials were often used for sealing and fixing. In order to improve the sealing effect of existing packing, the packing box is raised and the packing layer is increased. In order to prevent steel corrosion or contamination of materials, enamel or PTFE lining is used for anti-corrosion measures in the parts in contact with materials. However, the following problems still exist: 1. The existing packing seal is prone to leakage; 2. The packing is not easy to be evenly compressed, so that the glass tube may crack or break during installation, maintenance or use, resulting in leakage risk. 3. The packing box is difficult to install and has high requirements. 4. The packing box is easily damaged. 5. The packing box and the glass tube are rigidly connected. The rolling of materials in the kettle or tower, the vibration of equipment, improper installation, etc., can easily cause the glass tube to break, causing accidents. Due to these reasons, the application of photochlorination reaction is limited, and high-cost and polluting catalytic processes are used instead. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a sealing device for a chlorination reaction light source device, which can achieve sealing and fixing of the chlorination reaction light source device.

[0004] The utility model is realized by the following method: a sealing device for a chlorination reaction light source device, comprising a glass tube of the light source device and a sealing assembly, wherein the sealing assembly is fixed to an interface of a reactor, wherein the sealing assembly comprises an upper flange, a sealing gasket, a pressure cap, a sleeve, a lower flange, a sealing bolt and a sealing nut, wherein the upper flange is a concave flange with a concave surface facing downward, wherein the sealing gasket is placed in the concave surface of the upper flange and is sheathed on the glass tube, wherein the pressure cap is placed in the concave surface of the upper flange and is sheathed on the glass tube, wherein the sleeve is placed on a lower pressure cap of the inner concave surface of the pressure cap, wherein the sealing gasket and the inner concave surface of the lower flange are the same as those of the upper flange; wherein the upper flange and the lower flange are connected and pressed by sealing bolts and sealing nuts; wherein the interface of the reactor is connected to the lower flange of the light source device by a detachable slip-on flange, an interface sealing gasket, and fixing bolts and fixing nuts.

[0005] Furthermore, the lower end flange is connected to the interface of the reactor.

[0006] The beneficial effects of the utility model are as follows: compared with the existing packing seal, the utility model can reduce the leakage of highly toxic and asphyxiating chlorine gas, irritating and corrosive HCL gas; compared with the existing packing seal, the existing packing seal is prone to cracking, breaking, etc. due to uneven force during installation or maintenance, causing accidents; compared with the existing packing seal, the utility model is safer and more effective, when the packing in the packing box is not properly filled, the shock resistance of the glass tube will be reduced, the rolling of the material will cause the glass tube to shake, and the glass tube will break; compared with the existing packing seal, only the lower end flange 6 and the sealing gasket 3 of the utility model directly contact the material, and the steel lining polytetrafluoroethylene, which is easy to make, can meet the process requirements; When using a stuffing box, materials will penetrate, and the inner surface of the stuffing box needs to be anti-corrosive, which has a high manufacturing cost, is easy to break during use, and is difficult to detect; a plastic plate made of polypropylene that is lightweight, strong, corrosion-resistant, and inexpensive can be used, and its weight can be reduced to about a quarter of the original weight compared to a steel stuffing box. The material is common, low-cost, and easy to install and maintain; compared with existing stuffing seals, the utility model has an upper flange, a gland, a sleeve, and a low operating temperature, and can use a plastic plate made of polypropylene that is lightweight, strong, corrosion-resistant, and inexpensive, and its weight can be reduced to about a quarter of the original weight compared to a steel stuffing box; compared with existing stuffing seals, the utility model is easy to install and maintain, has a low cost, less leakage, and a low maintenance frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of the utility model.

[0008] In the figure:

[0009] 1. Glass tube; 2. Upper flange; 3. Sealing gasket; 4. Pressure cap; 5. Sleeve; 6. Lower flange; 7. Interface sealing gasket; 8. Removable slip-on flange; 9. Interface of reactor; 10. Fixing bolts; 11. Fixing nuts; 12. Sealing bolts; 13. Sealing nuts. DETAILED DESCRIPTION

[0010] The utility model is further described below in conjunction with the accompanying drawings.

[0011] Please continue reading Figure 1 As shown, the utility model provides an embodiment: a sealing device for a chlorination reaction light source device, comprising a glass tube of the light source device and a sealing assembly, wherein the assembly is fixed to the interface of a reactor or a tower. The sealing assembly comprises an upper flange 2, a sealing gasket 3, a gland 4, a sleeve 5, a lower flange 6, a sealing bolt 12, and a sealing nut 13. The fixing part comprises a kettle interface of the kettle or a tower interface 9 of the reaction tower, a detachable slip-on flange 8, an interface sealing gasket 7, and a fixing bolt 10 and a fixing nut 11 connected to the sealing assembly. The interface 9 of the kettle or tower is a universal standard interface for equipment manufacturing, and the detachable slip-on flange 8, the interface sealing gasket 7 and the interface are matched. The fixing bolt 10, the sealing bolt 12, the fixing nut 11, and the sealing nut 13 are all universal standard parts. The glass tube 1 of the light source device is a universal standard special quartz tube, the sealing gasket 3 is a universal standard, and the sleeve 5 is also a commonly used pipe that is easy to purchase. The upper flange 2, lower flange 6, and gland 4 need to be designed, processed, and manufactured. Their outer diameters are the same as the outer diameters of the detachable slip-on flange 8 that matches the interface 9 of the kettle or tower. Their inner hole sizes are related to the size of the glass tube 1. The concave sizes of the flanges 2 and 6 are related to the size of the sealing gasket 3. The size of the gland 4 is related to the concave sizes of the flanges 2 and 6 and the size of the sleeve 5. In the sealing assembly of the light source device, the upper end of the glass tube 1 should be appropriately higher than the upper flange 2. The upper flange 2 of the assembly is a concave flange (the concave surface faces downward), the sealing gasket 3 is placed in the concave surface of the flange 2 and is covered on the glass tube 1, the gland 4 is built in the concave surface of the flange 2 and is covered on the glass tube 1, the sleeve 5 is placed in the concave surface of the upper and lower glands 4, and the lower gland 4, the sealing gasket 3 and the concave surface of the lower flange 6 are the same as the upper flange 2. The upper flange 2 and the lower flange 6 are connected and pressed by sealing bolts 12 and nuts 13 to form a glass tube 1 light source device sealing assembly that is not easy to leak. The reactor (tower) interface 9 is connected to the lower flange 6 of the light source device through a detachable slip-on flange 8, an interface sealing gasket 7, and bolts 10 and nuts 11.

[0012] In the present invention, the height of the light source device mainly depends on the length of the sleeve 5. The longer the length of the sleeve 5, the less the glass tube 1 is affected by the vibration of the equipment and the turning of the materials. Generally, the longer the length of the glass tube 1, the longer the sleeve 5. The larger the diameter of the glass tube 1, the greater the buoyancy, and the longer the sleeve 5. However, when the length of the glass tube 1 is determined, the effective length extending into the kettle and the tower will be reduced.

[0013] The lower flange 6 of the light source device is connected to the kettle interface 9, which is in direct contact with the material and is easily corroded or affects the material, thereby reducing the quality and reaction yield. Therefore, the steel-lined polytetrafluoroethylene, which is easy to make, can be used. It is corrosion-resistant and has high strength and can meet the process requirements. When a stuffing box is used, the area in contact with the material is large, the anti-corrosion requirements are high, the manufacturing is difficult, and it is easy to be damaged during use and difficult to find.

[0014] The upper flange 2, the gland 4, and the sleeve 5 of the light source device have a low operating temperature and can be made of a light, strong, corrosion-resistant, and low-priced polypropylene plastic plate. The weight of the plastic plate can be reduced to about a quarter of the original weight compared to a steel stuffing box. The material is common, the cost is low, and the installation and maintenance are convenient.

[0015] The sealing of the light source device mainly depends on the material and size. The material of the sealing gasket 3 can be selected from asbestos, asbestos wrapped in PTFE, rubber, rubber wrapped in PTFE, fluororubber, etc. The sealing gasket 3 is evenly stressed, reliable and difficult to leak. Compared with the packing seal, the packing will cause penetration leakage. During maintenance, when the packing is pressed tightly, the force will be uneven, making the glass tube easy to crack or break.

[0016] The light source device is fixed by connecting the detachable slip-on flange 8, the interface sealing gasket 7, and the lower flange 6 of the light source device, which is a common fixing method;

[0017] The light source device can be adjusted according to the length and diameter of the glass tube 1 and the size of the kettle or tower interface 9, and has a wide range of applications.

[0018] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A sealing device for a chlorination reaction light source device, characterized in that: It comprises a glass tube of a light source device and a sealing assembly, wherein the sealing assembly is fixed to an interface of a reactor, and the sealing assembly comprises an upper flange, a sealing gasket, a pressure cap, a sleeve, a lower flange, sealing bolts and sealing nuts. The upper flange is a concave flange with the concave surface facing downwards, the sealing gasket is placed in the concave surface of the upper flange and is sleeved on the glass tube, the pressure cap is placed in the concave surface of the upper flange and is sleeved on the glass tube, the sleeve is placed on the lower pressure cap of the inner concave surface of the pressure cap, and the sealing gasket and the inner concave surface of the lower flange are the same as those of the upper flange; the upper flange and the lower flange are connected and tightened by sealing bolts and sealing nuts; the reactor interface is connected to the lower flange of the light source device by a detachable slip-on flange, an interface sealing gasket, and fixing bolts and fixing nuts.

2. A sealing device for a chlorination reaction light source device according to claim 1, characterized in that: The lower end flange is connected to the interface of the reactor.

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