Novel extraction procedure in production process of refined anthracene

A production process, refined anthracene technology, applied in the direction of extraction and purification/separation, organic chemistry, etc., can solve the problems of environmental pollution, small processing capacity, high energy consumption, etc.

CN104447181AInactive Publication Date: 2015-03-25NINGXIA ZHONGYUAN TIANYU TECH
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-03-25
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a novel extraction procedure in a production process of refined anthracene. The novel extraction procedure in the production process of refined anthracene is characterized in that the first operation is a vacuum operation and is carried out in a sealing apparatus and the tail gas exhausted by a vacuum pump is cooled by virtue of non-condensable gas purgers before and after the vacuum pump and aromatic hydrocarbon and alkane in the tail gas are further recovered by virtue of a water-sealing device and then the rest tail gas is exhausted. The extraction procedure disclosed by the invention has the advantages that the extraction is performed by virtue of a vertical oil-free vacuum pump and the pump body is cooled only with circulating cooling water.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to an extraction process of a novel production process of refined anthracene, which belongs to the field of fine chemical industry. Background technique

[0002] At present, most domestic enterprises produce crude anthracene by cooling, crystallizing and centrifuging anthracene oil, and then use solvent extraction or solvent distillation to prepare refined anthracene and carbazole. Domestic anthracene oil processing methods are relatively backward, with small processing capacity, high energy consumption, environmental pollution and poor economic benefits. Contents of the invention

[0003] The purpose of the present invention overcomes the deficiencies of the above technologies, and provides a novel extraction process for the production process of refined anthracene. In order to realize the above invention, it is achieved by the following technical solutions: the present invention relates to an extraction process of a novel ...

Examples

Embodiment 1

[0008] Example 1: The extraction process of a new type of refined anthracene production process:

[0009] The present invention relates to the extraction process of a new type of refined anthracene production process, which is characterized in that the first step of the extraction process of the new type of refined anthracene production process is vacuum operation and is carried out in a closed device. The exhaust gas discharged from the vacuum pump is discharged after further recovery of aromatics and alkanes in the gas after the non-condenser cooling and water sealing device of the front pump and the rear pump of the pump.