Byproduct recovery device for disperse red 60 preparation

Abstract

The invention discloses a byproduct recovery device for disperse red 60 preparation. According to the technical scheme, the byproduct recovery device comprises a main extraction tank, a mounting plate and a main discharging pipe are fixedly connected to the bottom of the main extraction tank, a secondary extraction tank is fixedly connected to the mounting plate, and a first valve is fixedly connected to the main discharging pipe; the device comprises a main extraction tank, a main discharge pipe is arranged at the bottom of the main extraction tank, a first branch pipe is fixedly connected to the position, close to the top end, of the main discharge pipe, the first branch pipe is fixedly connected with a secondary extraction tank, and a second valve is fixedly connected to the first branch pipe. According to the device, the solvent at the junction of the liquid level after extraction can be completely discharged into the secondary extraction tank for secondary extraction, the phenomenon that the upper and lower solvents are mixed can be effectively reduced, the extraction quality is improved, meanwhile, the secondary extraction process and the subsequent primary extraction of the mixed liquid can be synchronously carried out, and the overall recovery efficiency is not influenced.

Description

technical field [0001] The invention relates to the technical field of preparation of disperse red 60, in particular to a by-product recovery device for the preparation of disperse red 60. Background technique [0002] In the existing production process of Disperse Red 60, the condensed mother liquor obtained by condensation reaction of 1-amino-4-hydroxyanthraquinone and phenol after filtration contains a large amount of phenol, Disperse Red 60 and potassium bromide. A Disperse Red 60 disclosed in Publication No. CN101225239B The recovery and comprehensive utilization method of by-products includes: ① Acidification: the condensation mother liquid water filtered by the condensation reaction of 1-amino-2-bromo-4-hydroxyanthraquinone and phenol is adjusted to acidic pH by adding acid, and adding sulfate or Hydrochloride is acidified; 2 static layering: the condensation mother liquor water after acidification is left to stand for more than half an hour to obtain an upper layer s...

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Problems solved by technology

[0003] In the recovery process of the by-products prepared by the above-mentioned disperse red 60, industrial extraction tanks are often used for the extraction process, but the following problems exist in the current extraction process: firstly, the upper layer solvent and the lower layer solvent are discharged sequentially at the end of the extraction, but it is difficult to control at the junction of the liquid surface , it is easy to cause the lower layer solvent to be mixed with the upper layer solvent, and the purity is reduced. Due to the large volume of the industrial extraction tank, the solvent mixing amount is larger. In addition, if the lower layer is mixed with the upper layer solvent, it is generally necessary to re-extract, which will take up The extraction time of the subsequent mixed solution affects the overall recovery efficiency and needs to be further improved

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