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Rectification system for high-purity cyclohexanone and cyclohexanol and production process thereof

A technology of rectification system and cyclohexanone, which is applied in the field of rectification system and production process of high-purity cyclohexanone and cyclohexanol, which can solve the problems of low product purity and optimize the rectification process and steam consumption Reduced effect

Active Publication Date: 2020-06-05
成都凯特力华科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In order to solve the defects in the prior art, the present invention provides a high-purity cyclohexanone that can deeply process crude alcohol and ketone, solve the problem of low purity of existing products, and obtain high-purity cyclohexanone and high-purity cyclohexanol Rectification system and production process of ketone and cyclohexanol

Method used

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  • Rectification system for high-purity cyclohexanone and cyclohexanol and production process thereof
  • Rectification system for high-purity cyclohexanone and cyclohexanol and production process thereof
  • Rectification system for high-purity cyclohexanone and cyclohexanol and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] Such as figure 1 Shown, a kind of production technique of the rectification system of above-mentioned high-purity cyclohexanone and cyclohexanol, produces according to following processing steps:

[0107] S1 sends the raw materials into the light tower 1 and after rectification treatment; the light tower bottom component 11 of the tower bottom of the light tower 1 is sent into the ketone tower 3 for processing; the light one at the top of the light tower 1 The tower top component 12 is sent to the light second tower 2 for processing;

[0108] The raw materials are cyclohexanol dehydrogenation products and cyclohexane oxidation products, wherein cyclohexanone is 40-60%wt, cyclohexanol is 40-60%wt, and contains a small amount of light and heavy components, which are commonly called "crude alcohol ketones" here. ". The light tower 1 is operated under negative pressure, and the operating pressure is 40-60KpaA. The top component 12 of the light tower is a light component ...

Embodiment 2

[0121] Such as figure 2 Shown, a kind of production technique of the rectification system of above-mentioned high-purity cyclohexanone and cyclohexanol, produces according to following processing steps:

[0122] S1 sends the raw materials into the light tower 1 and after rectification treatment; the light tower bottom component 11 of the tower bottom of the light tower 1 is sent into the ketone tower 3 for processing; the light one at the top of the light tower 1 The tower top component 12 is sent to the light second tower 2 for processing;

[0123] The raw materials are cyclohexanol dehydrogenation products and cyclohexane oxidation products, wherein cyclohexanone is 40-60%wt, cyclohexanol is 40-60%wt, and contains a small amount of light and heavy components, which are commonly called "crude alcohol ketones" here. ". The light tower 1 is operated under negative pressure, and the operating pressure is 40-60KpaA. The top component 12 of the light tower is the light compone...

Embodiment 3

[0136] Such as image 3 Shown, a kind of production technique of the rectification system of above-mentioned high-purity cyclohexanone and cyclohexanol, produces according to following processing steps:

[0137] S1 sends the raw materials into the light tower 1 and after rectification treatment; the light tower bottom component 11 of the tower bottom of the light tower 1 is sent into the ketone tower 3 for processing; the light one at the top of the light tower 1 The tower top component 12 is sent to the light second tower 2 for processing;

[0138] The raw materials are cyclohexanol dehydrogenation products and cyclohexane oxidation products, wherein cyclohexanone is 40-60%wt, cyclohexanol is 40-60%wt, and contains a small amount of light and heavy components, which are commonly called "crude alcohol ketones" here. ". The light tower 1 is operated under negative pressure, and the operating pressure is 40-60KpaA. The top component 12 of the light tower is the light componen...

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Abstract

The invention discloses a rectification system for high-purity cyclohexanone and cyclohexanol. The rectification system comprises a light tower I, a ketone tower I, a ketone tower II, an alcohol towerI and an alcohol tower II which are connected in sequence, and also comprises a light tower II; the light tower II is connected with the light tower I; and the light tower II and the light tower I form a reflux passage; the ketone tower I and the ketone tower II form a reflux passage; and the alcohol tower I and the alcohol tower II form a reflux passage. By using the rectification system for thehigh-purity cyclohexanone and cyclohexanol, a deep processing method for obtaining the high-purity cyclohexanone with the purity of more than or equal to 99.97% (wt) and a processing technology for obtaining the high-purity cyclohexanol with the purity of more than or equal to 99.5% (cyclohexanol + cyclohexanone is more than or equal to 99.8%)can be provided. The cyclohexanone content in the cyclohexanol product is reduced to 0.1 wt%, so that the generation amount of byproduct heavy oil is reduced by 35% compared with that of the byproduct heavy oil during dehydrogenation of cyclohexanol (220-260 DEG C).

Description

technical field [0001] The invention relates to the field of rectification systems of cyclohexanone and cyclohexanol, in particular to a rectification system of high-purity cyclohexanone and cyclohexanol and a production process thereof. Background technique [0002] Cyclohexanone / cyclohexanol is an important raw material for adipic acid and caprolactam in the field of new materials. It is known that cyclohexanone is synthesized by air oxidation of cyclohexane and hydration of cyclohexene, and then purified cyclohexanone is obtained by separating light and heavy components by distillation. [0003] Air Oxidation of Cyclohexane to Cyclohexanone / Cyclohexanol [0004] [0005] [0006] Hydration of cyclohexene to cyclohexanol [0007] [0008] Dehydrogenation of cyclohexanol to cyclohexanone [0009] [0010] Regardless of using the cyclohexane oxidation method or the cyclohexene hydration process, a part of light components and heavy components will be produced ...

Claims

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Application Information

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IPC IPC(8): C07C45/82C07C49/303C07C29/80C07C35/08
CPCC07C45/82C07C29/80C07C2601/14C07C49/303C07C35/08Y02P20/10
Inventor 赵慧代冰刘之阳李云云
Owner 成都凯特力华科技有限公司