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

Abstract

The invention discloses a production process and application of a high-voltage armored thermocouple protection device for a hydrogenation reactor. According to the internal structure of the reactor, a protection mechanism and a support mechanism structure for installing the protection mechanism are set; the protection device manufactured by the production process , installed in the hydrogenation reactor to protect the armored thermocouple, thereby avoiding the direct contact between the armored thermocouple and the catalyst, so that the catalyst will not sink when the armored thermocouple sinks; When the armored thermocouple is solidified in the catalyst, it has a protective effect on the armored thermocouple, thereby avoiding the safety hazards of major safety accidents such as fire caused by damage to the armored thermocouple, and prolonging the service life of the thermocouple , reducing production costs.

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 and wax oil high temperature and high pressure hydrogenation units and reactors in hydrocracking and PX large aromatics units. [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 reactors in the hydrogenation unit are fixed-bed reactors, and there are also a small amount of fluidized bed, slurry bed and liquid-phase hydrogenation reactors...

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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