Dithiosalicylic acid refining device and process

Abstract

The invention provides a dithiosalicylic acid refining device which comprises a dissolution reaction kettle, wherein a liquid caustic soda inlet and a softened water inlet are formed in the top of thedissolution reaction kettle; a stirring device is mounted inside the dissolution reaction kettle; a jacket is mounted on the outer wall of the dissolution reaction kettle; a filter is connected withthe bottom of the dissolution reaction kettle through a conveying pipeline; a filtering cylinder is mounted inside the filter; a filtering net is arranged at the top of the filtering cylinder; the lower part of the filter is connected with the top of an acidification reaction kettle through a conveying pipeline; a hydrochloric acid inlet is formed in the top of the acidification reaction kettle; ajacket is mounted on the outer wall of the acidification reaction kettle; the bottom of the acidification reaction kettle is connected with a centrifuge through a conveying pipeline. The dithiosalicylic acid refining device has the advantages that in processes of alkali dissolution, decontamination and acidification, high-quality products are prepared to the maximum extent, and the product puritycan be improved; in addition, the jackets are mounted on outer walls of the dissolution reaction kettle and the acidification reaction kettle, and heat inside the reaction kettles can be carried awaythrough heat exchange of circulated water and the reaction kettles, so that product damage caused by too high temperatures can be avoided; in addition, an alkali solution or an acid solution does notneed to be continuously dropped, so that the labor can be saved, and the working efficiency can be improved.

Description

technical field [0001] The invention relates to the field of dithiodibenzoic acid, in particular to a dithiodibenzoic acid refining device and process. Background technique [0002] The product purity of the dithiodibenzoic acid production line is 95%~97%. During the large-scale production process using a reactor, impurity powder and dust particles may be mixed into the product due to pipeline corrosion and material residue, and the resulting content cannot meet the requirements of high-end products. , the production efficiency is greatly reduced. Contents of the invention [0003] The object of the present invention is to provide a kind of refining device and process of dithiodibenzoic acid in order to solve the deficiencies in the prior art. [0004] The new technical solution of the present invention is: a refining device for dithiodibenzoic acid, comprising a dissolution reactor, a filter and an acidification reactor, the top of the dissolution reactor is provided wit...

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Problems solved by technology

[0002] The product purity of the dithiodibenzoic acid production line is 95%~97%. During the large-scale production process using a reactor, impurity powder and dust particles may be mixed into the product due to pipeline corrosion and material residue, and the resulting content cannot meet the requirements of high-end products. , the production efficiency is greatly reduced

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