A continuous production system for phosphorus oxychloride

Abstract

The invention which belongs to the field of chemical equipment discloses a continuous production system of phosphorous oxychloride. The continuous production system of phosphorous oxychloride comprises an elevated tank of phosphorus trichloride, an elevated reaction vessel, a first order reaction vessel, a second order reaction vessel, a third order reaction vessel, an oxygen tank, a cooler, a finished product pot, and a finished product pump. The continuous production system of phosphorous oxychloride has the advantages of simple equipment composition and short flow, the output can be increased by about one time, the unit consumption is reduced by 4% than the unit consumption of intermittent production systems, the system of the invention needs less man power, can be controlled by a DCS,and needs only two men to operate.

Description

technical field [0001] The invention belongs to the field of chemical equipment and relates to a continuous production system of phosphorus oxychloride. Background technique [0002] The production methods of industrial phosphorus oxychloride mainly include chlorination hydrolysis, oxygen oxidation of phosphorus trichloride, co-production of phosphorus oxychloride with thionyl chloride, etc. After the 1990s, the oxygen oxidation method of phosphorus trichloride gradually became the mainstream of industrial phosphorus oxychloride production. At present, most manufacturers of phosphorus oxychloride use intermittent production. This production process is mainly to put the measured phosphorus trichloride into the reaction kettle, feed oxygen, control the reaction temperature, and take samples for analysis after the reaction is completely completed. Qualified finished products. [0003] The main disadvantage of this process is that the unit consumption of phosphorus trichloride...

AI Technical Summary

Problems solved by technology

[0003] The main disadvantage of this process is that the unit consumption of phosphorus trichloride is high, the output is low, and it wastes manpower

At the same time, the oxidation reaction is a dangerous process, which is not conducive to long-term adoption by enterprises. It is imperative to change the oxidation reaction to continuous and adopt automatic control technology.

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