Alkali liquor separation system and cyclohexanone preparation system

A separation system and lye technology, which are applied in the separation of immiscible liquids, the separation/purification of carbonyl compounds, and organic chemistry, etc. The effect of removal rate and saving water utilization rate

Pending Publication Date: 2020-08-11
东明旭阳化工有限公司
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  • Abstract
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Problems solved by technology

Existing waste caustic separation systems either have low separation efficiency or high water consumption

Method used

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  • Alkali liquor separation system and cyclohexanone preparation system

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to d...

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Abstract

The embodiment of the invention provides an alkali liquor separation system and a cyclohexanone preparation system. The alkali liquor separation system comprises a first alkali liquor separator, a first mixer, a second alkali liquor separator, a second mixer and a third alkali liquor separator, wherein the first alkali liquor separator is used for carrying out oil-water separation on a to-be-separated liquid; a liquid inlet of the first mixer is separately connected with an oil phase outlet of the first alkali liquor separator, a water phase outlet of the second alkali liquor separator and a water phase outlet of the third alkali liquor separator; a liquid inlet of the second alkali liquor separator is connected with a liquid outlet of the first mixer; a liquid inlet of the second mixer isseparately connected with an oil phase outlet of the second alkali liquor separator, a water phase outlet of the third alkali liquor separator and an external water supply system; and a liquid inletof the third alkali liquor separator is connected with a liquid outlet of the second mixer. According to the alkali liquor separation system, washing water is recycled and diluted, so water consumption is reduced, and each alkali liquor separator is allowed to keep a relatively high alkali ion removal rate.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of preparation of cyclohexanone, in particular to an alkali liquid separation system and a preparation system of cyclohexanone. Background technique [0002] As an important chemical product, cyclohexanone is an important raw material for the production of adipic acid and caprolactam. At present, there are three main processes for producing cyclohexanone in the world: phenol method, cyclohexane oxidation method and cyclohexene method, among which more than 70% of the cyclohexanone manufacturers in the industry adopt the cyclohexane oxidation process. The process mainly includes oxidation, decomposition, separation of spent caustic soda, alkane rectification, saponification, refining, dehydrogenation and heat recovery. , will lead to fouling of the tubes of the reboiler, resulting in a decrease in the heat transfer efficiency of the reboiler, and insufficient power for the cyclohexa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/02C07C45/80C07C49/403
CPCB01D17/02C07C45/80C07C49/403
Inventor 张华栋任成韵于进玉刘毅石峰
Owner 东明旭阳化工有限公司
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