A process for the production of polysilazanes

By using a modularly designed continuous flow production process and a PLC/DCS control system, the problem of inaccurate temperature and pressure control in the production of polysilazane was solved, achieving efficient, safe, and green production of polysilazane and improving product quality stability and production efficiency.

CN122445003APending Publication Date: 2026-07-24ZHONGXI GUOXIN NEW MATERIALS (ZHEJIANG) CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHONGXI GUOXIN NEW MATERIALS (ZHEJIANG) CO LTD
Filing Date
2026-06-09
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing polysilazane production processes suffer from problems such as low precision in temperature and pressure control during the reaction process, unstable product quality, low efficiency due to intermittent operation, significant safety hazards, and high energy consumption.

Method used

The modular design of the continuous flow production process includes raw material pretreatment, precise metering, low-temperature mixing, continuous flow reaction, rapid solid-liquid separation, and continuous distillation. The entire process is automated and interlocked through a PLC/DCS control system. Combined with an external circulation filtrate heat transfer system and closed operation, it reduces reaction temperature and pressure fluctuations and improves production consistency and safety.

Benefits of technology

It significantly improves production efficiency, reduces energy consumption, enhances product quality stability, reduces safety risks, and achieves efficient, safe, and green production of polysilazane.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a production process of polysilazane and belongs to the technical field of organic silicon polymer synthesis. In view of the problems of low control precision, unstable quality, low efficiency, high safety and environmental protection risks and the like of a traditional intermittent process, the application adopts a modular continuous flow process: raw materials enter a mixing precooling system (temperature -20-20 DEG C) through a precise conveying system (mass flow meter + frequency converter, solvent and raw material mass ratio 10-1:1), then enter a continuous flow reactor, the reaction liquid enters a closed solid-liquid separation system (phase separation time <1 min, solid content 1-30%), and then is purified through a high-efficiency continuous rectification system to obtain the product. The whole process is automatically controlled through PLC / DCS, and safety and energy-saving measures such as hydrogen monitoring, nitrogen protection, energy recovery (ammonia evaporator cold recovery) and the like are integrated. The process realizes the continuous, safe and large-scale production of polysilazane, the product quality is stable, the production efficiency is improved, the energy consumption is reduced, and the process has the scalability from small test to kiloton-level production line.
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