Device and treating method for purification and dearsenification of industrial yellow phosphorus

Abstract

The invention provides a device and a treating method for purification and dearsenification of industrial yellow phosphorus. The device comprises a cyclone phase splitter, a dual-jet reactor and a circulating pump, wherein a yellow phosphorus outlet connecting pipe on the side edge of a lower cylindrical section of the cyclone phase splitter is connected with a yellow phosphorus suction pipe of the dual-jet reactor; a tangential inlet connecting pipe on the side edge of an upper cylindrical section is connected with a drainage tube flange; and the circulating pump is arranged between a hydrogen peroxide outlet connecting pipe on the side edge of the upper cylindrical section and a hydrogen peroxide connecting pipe flange. According to the technical characteristics of an existing yellow phosphorus technology, the cyclone phase splitter has the advantages of simple and compact structure, convenient use and large handling capacity, and is capable of saving energy, reducing consumption and reducing pollution; the dual-jet reactor and the rotational flow phase splitter are originally provided for a yellow phosphorus dearsenification treatment system; the arsenic content can be reduced to below 10ppm; the device and the method are continuous in operation, easy to automate, safe and efficient, wide in market prospect; and commercial requirements of a process system are relatively easily achieved.

Description

technical field [0001] The invention belongs to the field of industrial yellow phosphorus purification and arsenic removal, and in particular relates to a system and application of a binary jet mixing reactor and a cyclone phase separator of a two-phase jet mixing technology. Background technique [0002] Industrial yellow phosphorus is an important raw material for the production of acids and phosphates. It is widely used in important fields such as the production of nitrogen fertilizers, potash fertilizers, food processing, electronic chemicals, and military products. Under normal circumstances, industrial yellow phosphorus mainly contains impurities such as arsenic, organic matter (commonly known as oil), silicon, sulfur, iron and metals, especially the arsenic content is usually above 100ppm, and some even reach 300-400ppm. Excessive content will affect the application range of yellow phosphorus products, and at the same time affect the quality and quality of phosphorus-...

AI Technical Summary

Problems solved by technology

In this method, there are not only moving parts, which are easy to wear and consume electric energy, but also cannot ensure that the yellow phosphorus in the dispersed phase is fully contacted and reacted with the oxidizing solution, so it is time-consuming and energy-consuming, and it is difficult to fully remove the residual arsenic in the yellow phosphorus.

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