Process method for reducing content of organic matters in trichloroacetyl chloride byproduct hydrochloric acid

Abstract

The invention relates to the technical field of trichloroacetyl chloride production, and discloses a process method for reducing the content of organic matters in trichloroacetyl chloride byproduct hydrochloric acid. The process method comprises the following steps: S1, preparing an ABS modified fiber ball filter tower for coarse filtration, an activated carbon adsorption reaction tower for further fine filtration and an adsorption resin column for final filtration; S2, pretreating the adsorption resin column, namely adding ethanol having a concentration of 95% or above into an exchange columnor an extractor, with the height of ethanol being 10 cm higher than the height of the resin layer, soaking for 4 h, leaching with distilled water till effluent is not turbid when diluted with water in a test tube, and finally repeatedly washing with water till the ethanol content is smaller than 1%. The process method for reducing the content of the organic matters in the trichloroacetyl chloridebyproduct hydrochloric acid has the advantages that insoluble organic matters and soluble organic matters contained in the trifluoroacetyl chloride byproduct hydrochloric acid can be effectively removed, so that the byproduct hydrochloric acid can be applied to other required fields, resources can be utilized, and the process method is energy-saving, environment-friendly and good in economical efficiency.

Description

technical field [0001] The invention relates to the technical field of trichloroacetyl chloride production, in particular to a process for reducing the content of organic matter in trichloroacetyl chloride by-product hydrochloric acid. Background technique [0002] The acid chloride group in TFAC can easily react with amines and alcohols to form amides and esters respectively. It is an important raw material for the synthesis of pesticides and medicines. [0003] Trifluoroacetyl chloride (CF3COCl) contains highly reactive acid chloride groups, which can react with many types of compounds to generate trifluoroacetic acid derivatives, and is an important fine chemical intermediate. Sulfuryl fluoride (SO2F2) is also an important class of fine chemical intermediates, which can be used to synthesize perfluorinated compounds. It is also an excellent fumigant used for insecticide and sterilization in many industries. [0004] Trifluoroacetyl chloride will produce some by-product h...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the present invention provides a process for reducing the content of organic matter in trichloroacetyl chloride by-product hydrochloric acid, which can effectively remove insoluble organic matter and soluble organic matter contained in trifluoroacetyl chloride by-product hydrochloric acid, so that the by-product The production of hydrochloric acid can be applied to other required fields, so that resources can be utilized, energy saving, environmental protection, and good economy. It solves the problem that some by-product hydrochloric acid will be produced in the production and processing of trifluoroacetyl chloride, but this part of hydrochloric acid The high content of organic matter makes this part of hydrochloric acid unable to be used in other fields and can only cause waste, and it needs to be reprocessed after discarding this part of the waste hydrochloric acid, which is very inconvenient, high cost and low benefit