Separation / purification method of p-benzoquinone compound

Abstract

The invention provides a separation / purification method of a p-benzoquinone compound. The method is characterized in that an accelerator for promoting aggregation / self assembly of the p-benzoquinone compound is added to a mixed liquid containing p-benzoquinone compound, so as to realize precipitation of the p-benzoquinone compound at or below room temperature and separation / purification of the p-benzoquinone compound.

Description

[0001] Cross References to Related Applications [0002] The application is entitled "A Preparation Method for P-Benzoquinone Compounds" (Application No.: 201410443854.7, submitted on September 3, 2014), "A Method for Preparing P-Benzoquinone Compounds by Direct Oxidation of Phenol Compounds" (Application No.: 201410449008.6, submitted on September 5, 2014) and "a method for the preparation of p-benzoquinone compounds by selective catalytic oxidation of phenol compounds" (application number: 201410452657.1, submitted on September 9, 2014) Chinese patent expansion and supplement. technical field [0003] The invention relates to a method for separating / purifying p-benzoquinone compounds, in particular to a method for realizing the precipitation of p-benzoquinone compounds from a mixed system containing metal ions, phenol compounds and organic solvents. Background technique [0004] P-benzoquinone compounds, such as: 1,4-benzoquinone, 2-methylbenzoquinone, 2-tert-butylbenz...

AI Technical Summary

Problems solved by technology

However, this stripping process consumes too much energy and produces a large amount of quinone-containing wastewater. In addition, due to the relatively active chemical properties of p-benzoquinone, carbonization and coking are prone to occur in the stripping tower, which not only reduces the p-benzoquinone. Yield, and will affect product quality

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