Method for producing mixed butanol and coarse octanol by using waste liquid discharged from octanol device as raw material

A technology for crude octanol and butanol, which is applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc. The effect of low cost, reduced processing cost and simple process equipment

Active Publication Date: 2012-11-07
淄博诺奥化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the complexity of the components, it is difficult to process and comprehensively utilize them. The current treatment methods are mainly direct discharge or only incineration, which wastes energy and pollutes the environment and water sources.
Production of mixed butanol and octanol using the waste liquid discharged from the butanol plant as raw material, and the technology for resource treatment and utilization of it has not yet been seen

Method used

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  • Method for producing mixed butanol and coarse octanol by using waste liquid discharged from octanol device as raw material
  • Method for producing mixed butanol and coarse octanol by using waste liquid discharged from octanol device as raw material
  • Method for producing mixed butanol and coarse octanol by using waste liquid discharged from octanol device as raw material

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Experimental program
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Effect test

Embodiment 1

[0039] a. Raw material fractionation

[0040] The waste liquid discharged from the butanol unit first passes through the butyraldehyde fractionation unit to fractionate the butyraldehyde component contained therein from the top of the butyraldehyde column, and then passes through the butanol fractionation unit to extract the butanol component contained therein from the butanol Alcohol is fractionated from the top of the tower, and finally, the carbon eight components octenal and octanol contained in it are fractionated from the top of the carbon eight tower through the carbon eight fractionation tower device; the fractionated butyraldehyde is stored in the butyraldehyde storage tank, fractionated The produced butanol is stored in the C4 storage tank, and the octenal and octanol are stored in the C8 storage tank;

[0041] b. Hydrogenation synthesis

[0042] The butyraldehyde cut from the butyraldehyde storage tank in step a or the octenal and octanol cuts from the C8 storage t...

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Abstract

The invention discloses a method for producing mixed butanol and coarse octanol by using waste liquid discharged from an octanol device as a raw material, which belongs to a method for preparing acyclic monohydric alcohols, and is characterized by using a raw material fractionation unit, a hydrogenation synthesis unit and a product distillation unit, wherein the raw material fractionation unit comprises three fractionation devices: a butyraldehyde fractionation tower, a butanol fractionation tower and a C8 fractionation tower; the hydrogenation synthesis unit and the product distillation unitare suitable for hydrogenating and distilling a butyraldehyde fraction and a C8 fraction from the raw material fractionation unit alternately; and the product distillation unit comprises a light component removing tower device and a heavy component removing tower device. The method for producing the mixed butanol and coarse octanol by using the waste liquid discharged from the octanol device as the raw material, which is energy-saving and environmentally-friendly, can realize the recycling of the waste liquid discharged from the octanol device, reduce the waste water treatment cost of the octanol device and improves the technical indexes of treated water.

Description

technical field [0001] The invention relates to a method for producing mixed butanol and crude octanol by using waste liquid discharged from a butanol device as raw material. It belongs to the preparation method of acyclic monohydric alcohol. In particular, it relates to resource utilization and treatment of waste liquid discharged from a butanol plant. Background technique [0002] The low-pressure oxo synthesis process of butanol and octanol is that propylene is mixed with synthesis gas (CO+H) in the presence of a rhodium-phosphine complex catalyst. 2 ) react to produce n-butyraldehyde and isobutyraldehyde. After n-butyraldehyde is separated from isobutyraldehyde, it condenses under the catalysis of sodium hydroxide solution to form octenal, and octenal is hydrogenated under the action of copper catalyst to form octanol (2-ethylhexanol). ; The direct hydrogenation reduction principle of the mixture of n-butyraldehyde and isobutyraldehyde without separation generates n-b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C31/12C07C31/125C07C29/141C07C29/80C07C29/17
Inventor 崔课贤王安军李仁德周立亮董京军林荣恒孙桂奇宋雪洋
Owner 淄博诺奥化工有限公司
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