Device and method for recovering unpolymerized chlorotrifluoroethylene monomer

Abstract

The invention discloses a device and a method for recovering an unpolymerized chlorotrifluoroethylene monomer. The device comprises a polytrifluorochloroethylene dust washing tower, a washing tower buffer tank, a first-stage membrane compressor, a first-stage membrane compressor buffer tank, an alkaline washing tower, a water washing tower, a water washing tower buffer tank, a sulfuric acid drying tower, a sulfuric acid drying tower buffer tank, a second-stage mode compressor, a second-stage compressor buffer tank, a monomer recovery condenser and a recovered monomer metering tank which are connected in sequence, wherein the polytrifluorochloroethylene dust washing tower sequentially comprises a tower kettle, an air inlet of a cyclone-like separator structure, a plate type washing tower, a wire mesh demister, a water inlet and a distribution device from bottom to top; and the polytrifluorochloroethylene dust washing tower, the alkaline washing tower, the water washing tower and the sulfuric acid drying tower are respectively connected with a liquid circulating pump. When the device of the invention is used for recovering the unpolymerized chlorotrifluoroethylene monomer, recovery quality can be ensured, potential safety hazard existing in the operation of the device is solved, and the device is advanced in process, simple in equipment and easy to implement.

Description

technical field [0001] The invention belongs to the technical field of recovery of polymerized monomers, and in particular relates to a recovery device and method for unpolymerized chlorotrifluoroethylene monomers. Background technique [0002] Polytrifluorochloroethylene is the earliest developed and commercialized fluorine-containing polymer. It is produced by free radical polymerization (using peroxide as an initiator or redox system to initiate) of chlorotrifluoroethylene. At present, suspension polymerization and solution can be used. Polymerization and emulsion polymerization and other methods of preparation. Because PTFE has excellent chemical stability, electrical barrier properties and weather resistance, it is widely used in high-tech fields such as national defense and military industry, electronic information, chemical industry, pharmaceuticals, and machinery manufacturing. At present, domestic polychlorotrifluoroethylene resin is mainly produced by suspension m...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention provides a recovery device and method for unpolymerized chlorotrifluoroethylene monomer, which solves the problem of recovery of unpolymerized chlorotrifluoroethylene in the process of producing polychlorotrifluoroethylene, both It ensures the quality of recycled chlorotrifluoroethylene, solves the safety hazards in the operation of the device, and at the same time ensures the long-term stable operation of the recovery system

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