Safety high-temperature and high-pressure reaction vessel sealing structure for solvothermal synthesis

Abstract

The invention relates to a safety high-temperature and high-pressure reaction vessel sealing structure for solvothermal synthesis, belongs to the field of solvothermal synthesis application and aims at solving the technical problem of providing the solvothermal high-temperature and high-pressure reaction vessel sealing structure capable of relatively well integrating the sealing property and the safety. According to the technical scheme, the safety high-temperature and high-pressure reaction vessel sealing structure for the solvothermal synthesis comprises a vessel body 1, a vessel cover 2 and a sealing pin 3; the vessel body 1 and the vessel cover 2 are connected and fastened by threads, the sealing pin 3 is compacted by the vessel cover so as to realize the conical sealing between the sealing pin 3 and the vessel body 1. The safety high-temperature and high-pressure reaction vessel sealing structure for the solvothermal synthesis is mainly used as a safety high-temperature and high-pressure solvothermal synthesis reaction container applied in the field of the solvothermal synthesis of a nanomaterial and other materials under the high-temperature and high-pressure conditions, and also can be used as a digestion tank appiled in the fields of quality testing, drug testing and food testing under the high-temperature and high-pressure conditions. The safety high-temperature and high-pressure reaction vessel sealing structure for the solvothermal synthesis has the beneficial effects of being capable of guaranteeing the safety of the high-pressure reaction vessel for the solvothermal synthesis, avoiding extreme accidents of explosion and the like as the pressure in the high-pressure reaction vessel exceeds the pressure-proof safety value in a metal material, and solving the safety and sealing problems.

Description

technical field [0001] The invention provides a safe sealing structure of a high-temperature and high-pressure reaction kettle used in a solvothermal synthesis reaction. Background technique [0002] At present, in the field of solvothermal synthesis, the structure of high-temperature and high-pressure reactors is complex and diverse, and the safety, reliability, stability and sealing performance of its sealing structure are often not realized at the same time, especially in terms of design and manufacturing. It is difficult to unify. Good sealing performance under high temperature and high pressure often leads to hidden dangers in safety, and good safety performance tends to reduce sealing performance. This problem has always plagued researchers in the field of solvothermal synthesis. Compared with non-high-temperature and high-pressure reactors (temperature below 240°C and pressure below 20MPa), the design and manufacture requirements of high-temperature and high-pressure ...

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Problems solved by technology

[0002] At present, in the field of solvothermal synthesis, the structure of high-temperature and high-pressure reactors is complex and diverse, and the safety, reliability, stability and sealing performance of its sealing structure are often not realized at the same time, especially in terms of design and manufacturing. It is difficult to unify. Good sealing performance under high temperature and high pressure often leads to hidden dangers in safety, and good safety performance often reduces sealing performance. This problem has always plagued researchers in the field of solvothermal synthesis.

Compared with non-high-temperature and high-pressure reactors (temperature below 240°C and pressure below 20MPa), the design and manufacture requirements of high-temperature and high-pressure reactors (temperature above 240°C can be as high as 650°C and pressure above 20MPa can be as high as 100MPa) It is very high. Under high temperature and high pressure conditions, its safety and sealing are a pair of contradictions. If only the sealing performance is considered, the chemical reaction of solvothermal synthesis under high temperature and high pressure conditions will easily lead to too high internal pressure of the autoclave. In the case of pressure relief, explosion accidents are prone to occur; similarly, if only safety performance is considered, the sealing performance of the autoclave has to be reduced, and it is easy to cause leakage and volatilization of materials inside the autoclave under high temperature and high pressure conditions, resulting in failure of the synthesis experiment

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