Method for producing ferric trichloride solution through industrial automatic control

Abstract

The invention discloses a method for producing a ferric trichloride solution through industrial automatic control. The method comprises the following steps of S1, pumping waste hydrochloric acid, generated after steel pickling, into a plate-and-frame filter press through a sealed pipeline, and filtering; S2, feeding filtered waste hydrochloric acid and excessive scrap iron into a reaction tank, and carrying out replacement reaction; S3, adding a ferrous chloride solution subjected to replacement reaction in the step S2 and quantitative scrap iron into a filler absorption tower, and feeding chlorine for carrying out chlorination reaction; S4, filtering the solution subjected to reaction in the step S3, thus obtaining the ferric trichloride solution. The method for producing the ferric trichloride solution through industrial automatic control, provided by the invention, has the advantages that an automatic chlorine feeding method is directly used, so that the method has the advantages oflow production pollution, simple operation, and benefit to reducing direct contact of people and chemical raw materials, has a role in protecting workers and an environment, is a promising hazardouswaste treatment process, and helps to solve troubles of a steel pickling industry.

Description

technical field [0001] The application relates to the chemical industry, in particular to a method for producing ferric chloride solution under industrial automation control. Background technique [0002] The production process of ferric chloride currently includes methods such as sodium hypochlorite and sodium chlorate oxidation. These methods are backward in technology, labor-intensive, directly in contact with chemical raw materials, simple in equipment, heavy in pollution, heavy metals exceed the standard, and contain carcinogens. Contents of the invention [0003] The present invention directly uses the method of automatic chlorine flow, which has little production pollution, simple operation, reduces the direct contact between people and chemical raw materials, and protects both laborers and the environment. It is a promising hazardous waste disposal process and helps iron and steel The pickling industry has relieved its worries. [0004] To achieve the above object...

AI Technical Summary

Problems solved by technology

[0002] The production process of ferric chloride currently has methods such as sodium hypochlorite and sodium chlorate oxidation. These methods are backward in technology, labor-intensive, directly in contact with chemical raw materials, simple equipment, heavy pollution, excessive heavy metals, and carcinogens.

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