A closed high temperature reaction kettle

Abstract

The invention belongs to the technical field of reaction kettles and particularly relates to an airtight high temperature reaction kettle, comprising a kettle body (1), a sealing ring (2), a kettle cover (3) and a holder (4), wherein the kettle body (1) is of a hollow cylindrical shape with an opening at one end; the kettle cover (3) is a solid cylinder with a flange B (302) at one end; the diameter of the kettle cover (3) is smaller than the inner diameter of the kettle body (1), and the kettle body (1) sleeves the periphery of the kettle cover (3); the sealing ring (2) is arranged on the holder (4), and the holder (4) is arranged between the contact surfaces of the upper edge of the kettle body (1) and the lower edge of the flange (302) in a circular ring shape.

Description

Technical field [0001] The invention belongs to the technical field of reactors, and specifically relates to a closed high-temperature and high-pressure reactor. Background technique [0002] The invention relates to a closed high-temperature reaction kettle, in particular to the analysis sample pretreatment stage in a 14C dating method for synthesizing benzene, and the reaction kettle is used as an intermediate step for the synthesis of benzene to prepare Li2C2. Li2C2 was synthesized by reacting metal Li and CO2 at 900℃ for 1h. During the reaction process, the mixing of CO2 in the outside air must be avoided, and the reactor is required to have good airtightness and temperature distribution. In order to put the metal Li and clean the container conveniently, the rubber ring is used to seal between the kettle cover and the kettle body. The sealing performance of the rubber ring deteriorates sharply in a high-temperature environment. Therefore, it is necessary to design heat insu...

AI Technical Summary

Problems solved by technology

[0003] The existing reactor has no heat insulation groove, and part of the heat in the reaction chamber is conducted upward along the side wall of the reactor, and its thermal resistance is small, so the heat loss of this type of reactor is relatively large during operation

In addition, the existing reactor uses cooling water to cool the reactor body through the copper tube wound on the upper part of the reactor. The contact area between the copper tube and the outer wall of the reactor body is small, and the heat exchange area is limited. The cooling efficiency of this type of reactor is low, and the sealing surface The temperature is too high, causing the sealing ring to age very quickly, and the sealing cannot be guaranteed, so it is easily affected by CO2 in the air, resulting in poor dating accuracy

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