Reaction kettle for separation and recovery treatments of fluorine-containing material by adopting reduced pressure distillation process

Abstract

The invention relates to a reaction kettle for separation and recovery treatments of a fluorine-containing material by adopting a reduced pressure distillation process. The reaction kettle comprises a kettle body, and an upper end socket and a lower end socket which are fixedly connected with the upper end and the lower end of the kettle body, wherein a stirring shaft is arranged in the kettle body; the upper end of the stirring shaft extends out of the upper end socket and is in transmission connection with an output shaft of a gear motor; the upper end socket is provided with a feed port, a first vacuum port and a first pressure sensor; the lower end socket is provided with a discharge port; the lower end of the stirring shaft is provided with a paddle; the kettle body is provided with a steam inlet and a steam outlet; a steam coil pipe is arranged in the kettle body; and a steam incoming end of the steam coil pipe communicates with the steam inlet, and a steam outgoing end communicates with the steam outlet. The upper and lower end sockets and the outer wall of the kettle body are fixedly connected with a vacuum jacket, respectively. The reaction kettle provided by the invention solves the problems that a conventional steel liner polytetrafluoroethylene reaction kettle cannot resist a high temperature and a negative pressure; moreover, the problem of heating the fluorine-containing material in the reaction kettle is solved, and the problem that the fluorine-containing material is separated and recovered through the reduced pressure distillation process is solved.

Description

technical field [0001] The invention relates to the field of environmental protection chemical equipment, in particular to a reaction kettle. Background technique [0002] Reactor is a comprehensive reaction vessel, which is widely used in petroleum, chemical, environmental protection, photovoltaic, electronics, rubber, pesticide, dye, medicine, food and other industries to complete various chemical reactions and material separation. Due to the different physical and chemical properties of materials and different reaction, disposal and separation conditions, it is necessary to choose reactors with different specifications, different materials and different requirements. At present, a large amount of fluorine-containing hazardous waste is produced in photovoltaic, electronic and other industries, and the above materials are extremely corrosive. The above-mentioned materials are treated by neutralization, distillation, precipitation and other methods, and the requirements for...

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Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art that cannot be used for disposal, separation and recovery of fluorine-containing materials, and are not corrosion-resistant, high-temperature resistant, and negative-pressure resistant, the applicant conducts research and improvement, and provides a method of disposal and separation using a vacuum distillation process. Reactor for recycling fluorine-containing materials

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