Production process and application of hydrogenation reactor high-voltage sheathed thermocouple protection device

Abstract

The invention discloses a production process and application of a hydrogenation reactor high-voltage sheathed thermocouple protection device. The production process comprises the steps: setting a protection mechanism and a support mechanism structure for installing the protection mechanism according to the internal structure of a reactor. The protection device manufactured by the production process is installed in the hydrogenation reactor to protect the sheathed thermocouple, so that the sheathed thermocouple is prevented from being in direct contact with a catalyst, and the sheathed thermocouple cannot be driven to sink when the catalyst sinks; and the sheathed thermocouple cannot be solidified in the catalyst when the catalyst is caked, so that the sheathed thermocouple is protected, the potential safety hazard of major safety accidents such as fire caused by damage of the sheathed thermocouple is avoided, the service life of the thermocouple is prolonged, and the production cost is reduced.

Description

【Technical field】 [0001] The invention relates to the protection field of armored thermocouples, in particular to a production process and application of a high-voltage armored thermocouple protection device for a hydrogenation reactor. 【Background technique】 [0002] Multi-point (multi-branch) armored thermocouples are mainly used in residual oil, wax oil high-temperature and high-pressure hydrogenation units, hydrocracking, and PX large-scale aromatics unit reactors. [0003] Due to its strong raw material adaptability and processing flexibility, the fixed-bed residual oil hydrogenation unit can realize the clean and efficient utilization of residual oil, and has high economic benefits. It is currently the most widely used residual oil treatment device in the petrochemical industry. [0004] At present, most of the hydrogenation unit reactors are fixed-bed reactors, and there are also a small amount of ebullating bed, slurry bed, and liquid-phase hydrogenation reactors. A...

AI Technical Summary

Problems solved by technology

[0005] However, in the prior art, since the armored thermocouple is hung on the inner wall of the reactor to form direct contact with the catalyst, the catalyst will sink after a long time, and the armored thermocouple will be pulled to sink during the sinking process of the catalyst. , which will cause the connection port of the armored thermocouple to be stressed and affect the sealing effect, resulting in hydrogen leakage;

[0006] In addition, the catalyst will solidify together in the reactor to form a block catalyst, so that the catalyst cannot be discharged from the reactor when the catalyst is replaced. And strong high-frequency vibration, and the armored thermocouple is subjected to strong and high-frequency impact during this process, which will cause damage or rupture of the armored tube, but these damages or ruptures are invisible to the naked eye , so it is misjudged that the armored thermocouple is intact, and it will continue to be used; after it is put into use, it will cause problems such as temperature detection instability; the most dangerous is because the environment in the reactor is a high temperature and high pressure environment, and there will be internal Corrosive gases and substances such as hydrogen sulfide cause hydrogen to enter external electrical components from damaged or ruptured armored pipes, thereby causing major safety accidents such as fires; therefore, the protection of armored thermocouples is urgent, so the present invention proposes a Production process and application of a high-voltage armored thermocouple protection device for a hydrogenation reactor

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