Method for separating and reclaiming organic matter from high-temperature Fischer-Tropsch synthesis reaction water

A technology of Fischer-Tropsch synthesis, separation and recovery, applied in the field of separation

Active Publication Date: 2008-08-13
YANKUANG ENERGY R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the purity of the methanol product in this process is 91%, and there is room for further improvement

Method used

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  • Method for separating and reclaiming organic matter from high-temperature Fischer-Tropsch synthesis reaction water
  • Method for separating and reclaiming organic matter from high-temperature Fischer-Tropsch synthesis reaction water
  • Method for separating and reclaiming organic matter from high-temperature Fischer-Tropsch synthesis reaction water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Such as figure 1 As shown, a method for separating and recovering organic matter in high-temperature Fischer-Tropsch synthesis reaction water, the method comprises using high-temperature Fischer-Tropsch synthesis reaction water as a raw material, and adopting a rectification tower to separate the reaction water raw material, and the top of the rectification tower is all A condenser is provided, and a reboiler is provided in the tower kettle. Rectify under the conditions of temperature, pressure, and reflux ratio that are properly adjusted. If extraction or azeotropic distillation is performed, it is necessary to select an appropriately adjusted amount of extractant or azeotrope and the location of addition to obtain acetone, methyl ethyl ketone, methanol, ethanol, n-propanol product. Described reaction water raw material is composed as follows:

[0072]

[0073] When adjusting the operating conditions of each rectifying tower as follows,

[0074]

[0075] The ...

Embodiment 2

[0078] A method for separating and recovering organic matter in high-temperature Fischer-Tropsch synthesis reaction water, the process of the method is the same as that of Example 1, and the raw material composition of high-temperature reaction water is the same as that of Example 1.

[0079] When adjusting the operating conditions of each rectifying tower as follows,

[0080]

[0081]

[0082] The separation and recovery results are:

[0083] product name

Embodiment 3

[0085] A method for separating and recovering organic matter in high-temperature Fischer-Tropsch synthesis reaction water, the process of the method is the same as in Example 1, and the raw material composition of high-temperature reaction water is as follows:

[0086]

[0087] When adjusting the operating conditions of each rectifying tower as follows,

[0088]

[0089] The separation and recovery results are:

[0090] product name

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Abstract

The invention relates to a separation and recovery method of organic matters in high-temperature Fischer-Tropsch synthesis reaction water. The method comprises steps of: (1) separating and recoverying aldehyde after rectifying and removing organic acid; (2) rectifying and separating ketone/n-propanol; (3) rectifying and separating acetone/butanone; (4) refining acetone; (5) extracting and separating butanone/ethanol; (6) rectifying and separating ethanol/n-propanol; further rectifying alcohol-containing aqueous sollution obatained from the bottom of a column for rectifying and separating ketone/n-propanol, ethanol containing little water and obtained from the top of the column, and n-propanol alcohol-containing aqueous sollution obatained from the bottom of the column; (7) azeotropic rectifying ethanol sollution obtained by exaction and separation, and ethanol sollution with n-propanol separated to prepare anhydrous ethanol; (8) adding calces in n-propanol aqueous sollution, distilling to obtain n-propanol products; the invention effectively and orderly separates and recoveries aldehyde, acetone, butanone, ethanol and n-propanol, the purity of each product is above 95% and the yield is above 90%.

Description

technical field [0001] The invention relates to a separation method, in particular to a method for separation and recovery of organic matter in high-temperature Fischer-Tropsch synthesis reaction water. Specifically, the content of acetaldehyde in the high-temperature Fischer-Tropsch synthesis reaction water is 0.19%-0.52%, the content of acetone is 0.67%-1.38%, the content of butanone is 0.65%-1.33%, the content of ethanol is 2.22%-4.96%, and the content of propanol is 0.45%- When the concentration is 0.99%, a series of rectification methods are used to separate and recover acetaldehyde, ethanol, n-propanol, acetone, butanone products with high recovery rate and purity. Background technique [0002] The development of coal liquefaction has become a long-term strategic measure for my country to solve the contradiction between oil supply and demand. The Fischer-Tropsch synthesis reaction is the core reaction of coal indirect liquefaction. The temperature of the high-temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/80C07C31/02C07C45/82C07C47/09C07C49/04C07C27/20
Inventor 孙启文杨莉赵东志岳建平杨正伟刘继森黄海
Owner YANKUANG ENERGY R&D CO LTD
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