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Method for treating oxygen-containing organic matters in Fischer-Tropsch synthesis reaction water

A technology of Fischer-Tropsch synthesis and treatment method, which is applied in the preparation of organic compounds, multi-stage water treatment, water/sewage treatment, etc., can solve the problems of high product impurities, achieve high product purity, improve conversion rate, and eliminate product impurities. The effect of reaching the target

Active Publication Date: 2020-02-21
YANKUANG ENERGY R&D CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a treatment method for oxygen-containing organic matter in Fischer-Tropsch synthesis reaction water in order to overcome the defects in the above-mentioned prior art, which solves the technical problem that the separated product impurities in the prior art are more

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  • Method for treating oxygen-containing organic matters in Fischer-Tropsch synthesis reaction water
  • Method for treating oxygen-containing organic matters in Fischer-Tropsch synthesis reaction water
  • Method for treating oxygen-containing organic matters in Fischer-Tropsch synthesis reaction water

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Embodiment 1

[0059] A treatment method for oxygen-containing organic matter in Fischer-Tropsch synthesis reaction water, which is mainly used to solve the technical problem that the product separated in the prior art has more impurities, according to figure 1 As shown in the flow process, the Fischer-Tropsch synthesis reaction water flow 1 (see Table 1 for the composition) enters the concentration tower T1, and the number of theoretical plates is 35, the reflux ratio is 6, and the feed position is the 15th plate from the top. Control the operating pressure at the top of the tower to 0.05MPaG, the temperature at the top of the tower is 80-81°C, the temperature at the bottom of the tower is 120-121°C, and the Fischer-Tropsch synthetic water stream 2 with a water content of less than 30wt% is produced at the top of the tower. The water content in this embodiment is is 28%, and the acid-containing water stream 3 is produced at the bottom of the tower. The Fischer-Tropsch synthesis water stream...

Embodiment 2

[0066] A method for treating oxygen-containing organic matter in Fischer-Tropsch synthesis reaction water, wherein the composition of the Fischer-Tropsch synthesis reaction water remains unchanged and the operating conditions of each unit are changed. The Fischer-Tropsch synthesis reaction water stream 1 enters the concentration tower T1. Under the condition that the number of theoretical plates is 30, the reflux ratio is 5, and the feeding position is the ninth plate from the top, the operating pressure at the top of the control tower is 0.05MPaG. The temperature at the top is 80-81°C, the temperature at the bottom of the tower is 120-121°C, and the Fischer-Tropsch synthetic water stream 2 with a water content of less than 30wt% is produced at the top of the tower. In this embodiment, the water content is 28%, and acid-containing water is produced at the bottom of the tower logistics3. The Fischer-Tropsch synthetic water stream 2 with a water content of less than 30 wt% is pr...

Embodiment 3

[0073] A method for treating oxygen-containing organic matter in Fischer-Tropsch synthesis reaction water. The composition of Fischer-Tropsch synthesis reaction water flow 1 is changed, and the operating conditions of each tower are as follows. Fischer-Tropsch synthesis reaction water flow 1 (see Table 5 for composition) enters the concentration tower T1, and the number of theoretical plates is 40, the reflux ratio is 4, and the feeding position is the 17th plate from the top. The pressure is 0.05MPaG, the temperature at the top of the tower is 78°C to 79°C, the temperature at the bottom of the tower is 120°C to 121°C, and the Fischer-Tropsch synthetic water stream 2 with a water content of less than 30wt% is produced at the top of the tower, and the water content in this embodiment is 24%. , the acid-containing water stream 3 is produced at the bottom of the tower. The Fischer-Tropsch synthetic water stream 2 with a water content of less than 30 wt% is preheated with hydrogen...

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Abstract

The invention relates to a method for treating oxygen-containing organic matters in Fischer-Tropsch synthesis reaction water. According to the method, Fischer-Tropsch synthesis reaction water is subjected to following treatment steps: (a) primary separation, concentration and separation, (b) carbonyl compound hydrogenation, (c) carbonyl compound cutting, (d) mixed alcohol dehydration, (e) solventrecovery, (f) ethanol separation, (g) methanol removal and separation, (h) isopropanol separation, (i) propanol cutting, (j) n-propanol separation, and (k) 2-butanol separation to obtain basic organicchemicals such as ethanol, isopropanol, n-propanol, 2-butanol and a mixed alcohol. Compared with the prior art, the method has the advantages that the concentrated Fischer-Tropsch synthesis water rich in alcohols, aldehydes, ketones, acids, and esters is directly hydrogenated into a mixed alcohol water solution, the separation technological process is simple, and the product purity is high.

Description

technical field [0001] The invention relates to the technical field of Fischer-Tropsch synthesis, in particular to a method for treating 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] During the Fischer-Tropsch synthesis reaction, most of the oxygen atoms in CO generate water, and a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/136C07C31/02C07B41/02C02F1/04C02F101/34
CPCC07C29/136C07B41/02C02F1/04C02F2101/34C07C31/02C10G2/32B01D3/42B01D3/143C02F2101/322C02F1/048C02F1/26C02F2301/08C10G2300/1022
Inventor 孙启文杨正伟刘继森张宗森周小江
Owner YANKUANG ENERGY R&D CO LTD
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