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Butyl alcohol and 2-ethyl hexanol production equipment industrial waste comprehensive utilization method

A technology for industrial waste and production equipment, applied in the petroleum industry, chemical instruments and methods, fuels, etc., can solve problems such as high energy consumption for cracking, poor economic benefits, complex composition, etc., to achieve economic benefits, solve environmental problems, and solve Effects of emissions problems

Active Publication Date: 2016-01-13
TIANJIN BOHUA YONGLI CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Components above C10-16 are heavy components, basically aldehyde condensation polymers. Due to the complex composition and low content, this part has not been rationally utilized for a long time, and the economic benefits are poor.
CN103342625A uses four-tower continuous rectification to obtain light components, butanol, C5-C7, octenal, and octanol respectively. The present invention does not further process octenal to obtain high value-added octanol and heavy components without further processing use
CN104447194A first separates the light components in the butanol industrial waste liquid, cracks the heavy components, and then separates them, wherein the cracking of the heavy components consumes a lot of energy, which is not conducive to energy saving

Method used

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  • Butyl alcohol and 2-ethyl hexanol production equipment industrial waste comprehensive utilization method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024](1) Firstly, the industrial waste of butanol and octanol is pumped into the first rectification tower 1, and the separation is carried out under the condition that the pressure and temperature at the top of the tower are 28KPa and 75.1°C respectively, and the industrial waste is divided into C4 with single molecule carbon number not greater than 4 Components and components greater than C4. Extract no more than C4 light components from the top of the tower, condense through the first condenser 5 and enter the first liquid receiving tank 10, and a part of the liquid pumped out from the first liquid receiving tank 10 is sent into the first rectifying tower as The reflux liquid and another part of the liquid are pumped into the second rectification column 2; the components larger than C4 are extracted from the bottom of the first rectification column 1 and enter the third rectification column 3.

[0025] (2) The light components entering the second rectification tower 2 are ...

Embodiment 2

[0030] (1) Firstly, the industrial waste of butanol and octanol is pumped into the first rectification tower 1, and the separation is carried out under the condition that the pressure and temperature at the top of the tower are respectively 30KPa and 75.1°C, and the industrial waste is divided into C4 having a single molecule carbon number not greater than 4 Components and components greater than C4. Extract no more than C4 light components from the top of the tower, condense through the first condenser 5 and enter the first liquid receiving tank 10, and a part of the liquid pumped out from the first liquid receiving tank 10 is sent into the first rectifying tower as The reflux liquid and another part of the liquid are pumped into the second rectification column 2; the components larger than C4 are extracted from the bottom of the first rectification column 1 and enter the third rectification column 3.

[0031] (2) The light components entering the second rectification tower 2...

Embodiment 3

[0036] (1) Firstly, the butanol industrial waste is pumped into the first rectification tower 1, and the separation is carried out under the conditions of the tower top pressure and temperature of 32KPa and 79.1°C respectively, and the industrial waste is divided into C4 with a single molecule carbon number not greater than 4 Components and components greater than C4. Extract no more than C4 light components from the top of the tower, condense through the first condenser 5 and enter the first liquid receiving tank 10, and a part of the liquid pumped out from the first liquid receiving tank 10 is sent into the first rectifying tower as The reflux liquid and another part of the liquid are pumped into the second rectification column 2; the components larger than C4 are extracted from the bottom of the first rectification column 1 and enter the third rectification column 3.

[0037] (2) The light components entering the second rectification tower 2 are separated under the conditio...

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Abstract

The invention discloses a butyl alcohol and 2-ethyl hexanol production equipment industrial waste comprehensive utilization method. The butyl alcohol and 2-ethyl hexanol production equipment industrial waste comprehensive utilization method comprises following steps: (1) butyl alcohol and 2-ethyl hexanol industrial waste is pumped into a first rectifying tower so as to degrade the industrial waste into components with a single molecule carbon number of 4 or less and a single molecule carbon number higher than 4, the obtained light components are delivered into a second rectifying tower, and the obtained heavy components are delivered into a third rectifying tower; (2) the light components delivered into the second rectifying tower are separated, mixed butyraldehyde and water are collected from the tower top, are subjected to condensation, and then are delivered into a second oil-water separation tank for separation; (3) the components with a single molecule carbon number higher than 4 are delivered into the third rectifying tower, and are separated in the third rectifying tower so as to obtain components with a single molecule carbon number of 8 and a single molecule carbon number higher than 8; and (4) a liquid obtained via liquid phase hydrogenation is pumped into a fourth rectifying tower, 2-ethyl hexanol with a purity as high as a preset standard is collected from the tower kettle of the fourth rectifying tower, is delivered into a fourth liquid receiving tank after condensation in a fifth condenser, and at last is pumped into a tank field. The butyl alcohol and 2-ethyl hexanol production equipment industrial waste comprehensive utilization method is capable of realizing industrial zero emission in butyl alcohol and 2-ethyl hexanol industrial production processes.

Description

technical field [0001] The invention is directed to a method for treating industrial waste of a butanol production device, in particular to a method for separating, treating and comprehensively applying industrial waste discharged during the production of butanol. Background technique [0002] The carbonylation method is used to react propylene with synthesis gas to produce butyraldehyde, which is hydrogenated to produce butanol, and n-butyraldehyde is condensed and rehydrogenated to produce octanol. Side reactions will occur during this process, and at the same time, there will be a small amount of discharge from the evaporator, separator, and weight removal tower of the butanol plant reactor. The discharged mixed liquid is called butanol industrial waste, which is equivalent to butanol. Alcohol accounts for about 10% of the total mass of alcohol products, and it contains a lot of valuable components, but due to its complex composition, it is generally used as fuel. The bu...

Claims

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Application Information

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IPC IPC(8): C07C31/12C07C29/141C07C29/80C07C47/02C07C45/82C07C31/125C07C29/17C10L1/02C10L1/16C10L1/198
CPCC07C29/141C07C29/175C07C29/80C07C45/82C10L1/02C10L1/143C10L1/16C10L1/1608C10L1/1985C10L2200/04C10L2300/20C07C31/12C07C47/02C07C31/125
Inventor 李亚斌安继民侯强王松李治水郭东升
Owner TIANJIN BOHUA YONGLI CHEM IND
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