Device for industrially continuously producing 2-ethylanthraquinone

Abstract

The invention relates to a device for industrially continuously producing 2-ethylanthraquinone. The device comprises a reacting tank, an absorbing column, a phase splitter, a solvent tower and a rectifying column, wherein an outlet pipeline of the reaction tank is connected with an inlet of the absorbing column; the reacting tank is provided with a BE acid storing tank inlet, a solid acid catalyst storing tank inlet and a base material collecting tank outlet which are correspondingly connected with a solid acid catalyst storing tank, a BE acid storing tank and a base material collecting tank; a catalyst regenerating tank outlet is correspondingly connected with the solid acid catalyst storing tank inlet and the BE acid storing tank inlet; the outlet pipeline of the absorbing column is connected with the inlet of the phase splitter; a liquid distributor is arranged at the inner upper part of the absorbing tower; an organic phase outlet pipeline of the phase splitter is connected with a solvent column feeding port; a bottom outlet pipeline of the solvent column is connected with a rectifying column feeding port; a top outlet of the solvent column is connected with the liquid distributor in the absorbing column through a pipeline; a 2-ethylanthraquinone outlet is arranged on the top of the rectifying column. Compared with an existing industrial device, the device has the advantages that the cost can be obviously decreased, and the environmental protection is improved.

Description

technical field [0001] The invention relates to the field of 2-ethylanthraquinone production, in particular to a device for industrial continuous production of 2-ethylanthraquinone. Background technique [0002] 2-Ethylanthraquinone, light yellow powder or scaly solid, is commonly used in the industry to manufacture hydrogen peroxide, dye intermediates, photocurable resin catalysts, photodegradable films, coatings and photopolymerization initiators. The domestic industry mainly uses ethylbenzene and phthalic anhydride and uses aluminum trichloride as a catalyst to catalyze the intermediate product 2-(4'-ethylbenzoyl)benzoic acid (BE acid), 2-(4'-ethylbenzoyl) ) Benzoic acid (BE acid) is dehydrated by concentrated sulfuric acid to form 2-ethylanthraquinone. This reaction produces a large amount of waste acid, which has great environmental pollution. [0003] Chinese patent (Patent No. ZL 201210098903.9) reports a synthesis method of 2-ethylanthraquinone, 2-(4'-ethylbenzoyl)...

AI Technical Summary

Problems solved by technology

This reaction produces a large amount of waste acid, which has great environmental pollution.

Images