Vinyl chloride polymerization initiator continuous injection equipment

By introducing a double-layered initiator injection pipeline and pipeline cooling device, optimizing the inlet position of the polymerization reactor and the inlet flow detection, the problems of long reaction time and high safety risks in vinyl chloride suspension polymerization were solved, realizing safe and continuous initiation of highly active initiators, improving production efficiency and reducing equipment costs.

CN224442930UActive Publication Date: 2026-07-03WANHUA CHEM GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WANHUA CHEM GRP CO LTD
Filing Date
2025-07-07
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing vinyl chloride suspension polymerization processes are time-consuming, and traditional initiators have low activity and high safety risks, resulting in high requirements for the heat removal capacity of the polymerization reactor and high equipment costs.

Method used

A double-layered initiator injection pipeline and pipeline cooling device are adopted to achieve continuous injection and cooling of highly active initiators, reduce the risk of decomposition, optimize the inlet position of the polymerization reactor, and introduce a flow detection device to control the reaction rate.

Benefits of technology

It reduces the polymerization time of vinyl chloride, improves production efficiency, reduces equipment costs and safety risks, and enables safe and continuous polymerization initiated by highly active initiators.

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Abstract

This application relates to a continuous injection device for vinyl chloride polymerization initiator, comprising an initiator storage container, an initiator pump, an initiator injection pipeline, a pipeline cooling device, and a polymerization reactor. The initiator injection pipeline includes a main pipe for conveying the initiator and a jacketed pipe for conveying refrigerant. One end of the main pipe is connected to the outlet of the initiator storage container, and the other end of the main pipe is connected to the inlet of the polymerization reactor. The initiator pump is mounted on the main pipe, and the jacketed pipe is mounted on at least one end of the main pipe that is connected to the polymerization reactor. The pipeline cooling device is connected to the jacketed pipe and is used to cool the refrigerant in the jacketed pipe.
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