Zhejiang Wynca Chemical Industry Group Co., Ltd.

Tsinghua University

East China University of Science and Technology

Shenluan Yu

Long Qin

Shengbao Jiang

Minhai Tu

Tiefeng Wang

Shuguang Zhou

Banghao Li

Xiaocheng Lan

Huahai Zhang

Zhenmin Cheng

Zhichao Jin

Zibin Huang

Meichen Chen

Peiqing Yuan

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

The present application discloses a multi-region plasma shell-and-tube reactor comprising a shell body. At least two reaction regions are provided inside the shell body, and a horizontal separation panel is provided between any two adjacent reaction regions, used to separate the two and passing through the tubes. A central hole is provided in the center of any horizontal separation panel, and at least one auxiliary hole distributed around the central axis of the central hole is provided in any horizontal separation panel so as to cooperate with the central hole to cause a vortex state to be formed in a reaction region.

Multi-region slurry shell-and-tube reactor

Growing community of inventors

Zhejiang, China

Shenluan Yu