Method for separating and recovering non-acidic oxygenated organic substances in Fischer-Tropsch synthesis reaction water

A Fischer-Tropsch synthesis, separation and recovery technology, applied in the separation/purification of carbonyl compounds, the preparation of organic compounds, organic chemistry, etc., can solve the problem of no effective recovery of aldehyde compounds, and achieve high recovery rate, simple method, improved economic effect

Active Publication Date: 2013-04-17
YANKUANG ENERGY R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method recovers some alcohols, ketones, acids and other products in water, but does not effectively recover aldehyde compounds

Method used

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  • Method for separating and recovering non-acidic oxygenated organic substances in Fischer-Tropsch synthesis reaction water
  • Method for separating and recovering non-acidic oxygenated organic substances in Fischer-Tropsch synthesis reaction water
  • Method for separating and recovering non-acidic oxygenated organic substances in Fischer-Tropsch synthesis reaction water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] according to figure 1 As shown in the flow process, the Fischer-Tropsch synthesis reaction water flow 1 (see Table 1 for composition) enters the reaction water concentration rectification column A, the number of theoretical plates is 50, the reflux ratio is 2, and the feeding position is the 25th plate from the top. Control the temperature at the top of the tower to be 71.5°C to 72.5°C, and the temperature at the bottom of the tower to be at 99.3°C to 100.3°C. The output stream 2 at the top of the tower enters Tower B. The number of theoretical plates is 50. The ratio is 4, the temperature at the top of the tower is controlled at 47°C to 48°C, the temperature at the bottom of the tower is at 84°C to 85°C, the production liquid 4 at the top of the tower enters the acetaldehyde tower C, the number of theoretical plates is 50, and the feeding position is at the top Starting from the 25th block, the reflux ratio is 4, the temperature at the top of the tower is controlled at...

Embodiment 2

[0059] according to figure 1 As shown in the flow process, the Fischer-Tropsch synthesis reaction water flow 1 (see Table 2 for the composition) enters the reaction water concentration rectification column A, the number of theoretical plates is 20, the reflux ratio is 10, and the feed position is the 10th plate from the top, and the control The temperature at the top of the tower is 71.5°C to 72.5°C, the temperature at the bottom of the tower is 99.3°C to 100.3°C, the output stream 2 at the top of the tower enters tower B, the number of theoretical plates is 15, the feeding position is the seventh block from the top, and the reflux ratio is 10. Control the temperature at the top of the tower to 47°C-48°C, the temperature at the bottom of the tower to 84°C-85°C, the production liquid 4 at the top of the tower enters the acetaldehyde tower C, the number of theoretical plates is 15, and the feeding position is the first from the top 7 blocks, the reflux ratio is 10, the temperatu...

Embodiment 3

[0065] according to figure 1 As shown in the flow process, the organic composition of the Fischer-Tropsch synthesis reaction water flow 1 is changed, and the operating conditions of each tower are as follows. The Fischer-Tropsch synthesis reaction water flow 1 (see Table 3 for the composition) enters the reaction water concentration rectification tower A, and the number of theoretical plates is 35 , the reflux ratio is 6, the feeding position is the 17th plate from the top, the temperature at the top of the tower is controlled at 74°C to 75.5°C, the temperature at the bottom of the tower is at 99°C to 101°C, the stream 2 from the top of the tower enters tower B, and the theoretical tower The number of plates is 35, the feeding position is the 17th block from the top, the reflux ratio is 8, the temperature at the top of the tower is controlled at 52°C to 53°C, the temperature at the bottom of the tower is at 8.54°C to 86°C, and the production liquid 4 at the top of the tower ent...

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Abstract

The invention relates to a method for treating non-acidic oxygenated organic substances in Fischer-Tropsch synthesis reaction water, which mainly solves the problem of separation and recovery of non-acidic oxygenated organic substances in Fischer-Tropsch synthesis reaction water. The method comprises the following steps: Fischer-Tropsch synthesis reaction water is subjected to (a) organic acid rectification separation, (b) ketol cutting rectification separation, (c) acetaldehyde refinement, (d) propanal acetone rectification separation, (e) acetone refinement, (f) propanal refinement, (g) anhydrous fusel separation, (h) alcohol-water separation, (i) aldehyde and ketone hydrogenation reduction, (j) ethanol refinement and (k) n-propanol refinement to finally obtain basic organic raw materials, including acetaldehyde, propanal, acetone, ethanol, n-propanol, mixed alcohols and the like. Compared with the prior art, the invention has the advantages of simple technical scheme, high recovery rate and the like, well solves the problem of separation of organic oxygenated compounds in the Fischer-Tropsch synthesis reaction water, and can be widely used in industrial production of non-acidic oxygenated organic substances from Fischer-Tropsch synthesis reaction water.

Description

technical field [0001] The invention relates to a method for separating and recovering Fischer-Tropsch synthesis reaction water, in particular to a method for separating and recovering non-acid oxygen-containing organic matter in Fischer-Tropsch synthesis reaction water. Background technique [0002] Fischer-Tropsch synthesis technology is the synthesis gas (CO+H 2 ) into liquid fuels and chemicals by chemical methods. Synthetic fuel oils are clean fuels free of sulfur, nitrogen and aromatic compounds. With the dwindling of international oil and gas resources, changes in market conditions, and environmental protection requirements, the development and industrialization of coal liquefaction and natural gas liquefaction technologies centered on Fischer-Tropsch synthesis will play an increasingly important role in ensuring national energy supply security, energy conservation and emission reduction. more important meaning. [0003] Coal indirect liquefaction mainly consists o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C47/09C07C47/02C07C49/08C07C45/82C07C31/08C07C31/10C07C31/12C07C31/125C07C29/90C07C29/80
Inventor 孙启文杨正伟蒋凡凯陈立才张宗森
Owner YANKUANG ENERGY R&D CO LTD
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