Tsinghua University

Zhejiang Wynca Chemical Industry Group Co., Ltd.

Xiaocheng Lan

Tiefeng Wang

Long Qin

Shenluan Yu

Shengbao Jiang

Minhai Tu

Banghao Li

Huahai Zhang

Xiaohong Zhu

The present invention provides a system for continuously producing diethyl methylphosphonite, comprising a rapid mixing reactor and a material circulation subsystem. An inlet of the rapid mixing reactor is provided with a rapid mixing component; the rapid mixing component comprises a first liquid inlet and a second liquid inlet; the second liquid inlet is used for feeding a material containing methylphosphonous dichloride; the material circulation subsystem comprises a filter, a material distribution unit, an acid binding agent premixer, and a heat exchanger, which are connected in sequence; the filter is also provided with a solid waste outlet; the material distribution unit is also provided with a diethyl methylphosphonite outlet; the acid binding agent premixer is also provided with a reaction raw material inlet and an acid binding agent inlet; an inlet of the filter is connected to an outlet of the rapid mixing reactor; and an outlet of the heat exchanger is connected to the first liquid inlet. A method for continuously producing the diethyl methylphosphonite by using the system can achieve large-scale continuous production of the diethyl methylphosphonite, and has the advantages of high product yield, stable production, and high production benefit.

System and method for continuously producing diethyl methylphosphonite

Growing community of inventors

Beijing, China

Xiaocheng Lan