Liquid phosphorus supply system and method for keeping stable supply of liquid phosphorus

Abstract

The invention relates to a liquid phosphorus supply system and a method for keeping stable supply of liquid phosphorus. The liquid phosphorus supply system comprises a phosphorus melting tank, a conveying pipeline, a heat preservation pipe used for conveying steam, a steam main pipe, a steam coil pipe, an electric heating device and a liquid drawing pump. A discharging port of the phosphorus melting tank is communicated with a feeding port of the conveying pipeline, the conveying pipeline is sleeved with the heat preservation pipe, heat preservation interlayers are arranged between conveying pipes and the heat preservation pipe and fixed to the outer wall of the conveying pipeline, the heat preservation interlayers are filled with a phase change material, and the phase change temperature of the phase change material is between the phosphorus melting point and the water vapor temperature. The steam coil pipe and the heating device are located in the phosphorus melting tank, and the steam coil pipe and the heat preservation pipe are communicated with the steam main pipe. The liquid drawing pump is arranged on the conveying pipeline and used for pumping liquid phosphorus. Based on the liquid phosphorus supply system, continuous supply of liquid phosphorus can be guaranteed when a steam system breaks down, and the stability of downstream production is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of phosphorus chemical production using yellow phosphorus as a raw material, and in particular relates to a liquid phosphorus supply system and a method for maintaining a stable supply of liquid phosphorus. Background technique [0002] Yellow phosphorus is an important industrial raw material. It is a colorless to yellow waxy solid with a garlic odor and emits light green phosphorescence in the dark. It has a melting point of 44.1°C and a boiling point of 280.5°C. It is unstable and flammable. It can spontaneously ignite and cause combustion and explosion when exposed to air. In the field of chemical industry, yellow phosphorus, as an important basic chemical raw material, is an important raw material for the production of phosphorus pentoxide, phosphoric acid, polyphosphoric acid, polyphosphate, glufosinate-ammonium, triethyl phosphate, etc. For example, the traditional thermal phosphoric acid process is:...

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is: to provide a liquid phosphorus supply system and a method for maintaining a stable supply of liquid phosphorus, which are used to solve the problem of unstable supply of liquid phosphorus caused by failure of steam supply in the prior art, resulting in the loss of downstream raw materials and production System instability, poor product quality, high energy consumption, etc.

Images