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Method for separating aqueous phase byproduct from Fischer-Tropsch synthesis reaction

A Fischer-Tropsch synthesis and separation method technology, which is applied in the separation/purification of carboxylic acid compounds, the separation/purification of hydroxyl compounds, the separation/purification of carbonyl compounds, etc. economic, environmental pollution, etc.

Active Publication Date: 2009-10-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is the problem that the direct discharge of the water phase by-product of the Fischer-Tropsch synthesis reaction is uneconomical and pollutes the environment, and a method for separating the water-phase by-product of the Fischer-Tropsch synthesis reaction is provided

Method used

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  • Method for separating aqueous phase byproduct from Fischer-Tropsch synthesis reaction
  • Method for separating aqueous phase byproduct from Fischer-Tropsch synthesis reaction
  • Method for separating aqueous phase byproduct from Fischer-Tropsch synthesis reaction

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Effect test

Embodiment 1

[0015] according to figure 1 The process shown, the Fischer-Tropsch synthesis aqueous phase by-product 10 (components with a boiling point less than 40°C, components with a boiling range of 50 to 120°C and components with a boiling point greater than 120°C account for 5%, 85% of the weight composition respectively and 10%) enter the common rectifying column 1 that the number of theoretical plates is 15, the feeding position is the 7th theoretical plate, the reflux ratio is 12, the control tower top temperature is 40 DEG C, and the side line is taken from the 8th theoretical plate The fraction 13 with a boiling range of 50-120°C is discharged, and the side stream fraction 13 enters the acetic acid cutting tower 2 with a theoretical plate number of 15, the 8th theoretical plate at the feeding position, a reflux ratio of 8, and a control tower kettle temperature of 104- 108°C, the distillate at the top of the tower is alcohol and ketone aqueous solution 14, and the acetic acid aq...

Embodiment 2

[0019] according to figure 1The process shown, the Fischer-Tropsch synthesis aqueous phase by-product 10 (components with a boiling point less than 40°C, components with a boiling range of 50 to 120°C and components with a boiling point greater than 120°C account for 5%, 85% of the weight composition respectively and 10%) enter the common rectifying tower 1 that the number of theoretical plates is 60, the feeding position is the 35th theoretical plate, the reflux ratio is 1, the control tower top temperature is 40 ℃, and the side line is extracted from 40 theoretical plates The fraction 13 with a boiling range of 50-120°C and the side-draw fraction 13 enter the acetic acid cutting tower 2, the number of theoretical plates is 50, the feeding position is the 30th theoretical plate, the reflux ratio is 8, and the temperature of the control tower is 104-108 ℃, the distillate at the top of the tower is alcohol and ketone aqueous solution 14, and the tower kettle obtains acetic acid...

Embodiment 3

[0023] according to figure 1 The process shown, the Fischer-Tropsch synthesis aqueous phase by-product 10 (components with a boiling point less than 40°C, components with a boiling range of 50 to 120°C and components with a boiling point greater than 120°C account for 5%, 85% of the weight composition respectively and 10%) enter the common rectifying column 1 that the number of theoretical plates is 30, the feed position is the 17th theoretical plate, the reflux ratio is 3, the control tower top temperature is 40 ℃, and the side line is extracted from 20 theoretical plates The fraction 13 with a boiling range of 50-120°C and the side stream fraction 13 enter the acetic acid cutting tower 2 with a theoretical plate number of 30, the 17th theoretical plate at the feeding position, a reflux ratio of 4, and a temperature of 104-108 in the control column ℃, the distillate at the top of the tower is alcohol and ketone aqueous solution 14, and the tower kettle obtains acetic acid aqu...

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Abstract

The invention relates to a method for separating an aqueous phase byproduct from Fischer-Tropsch synthesis reaction and mainly aims at solving the problem that the direct discharge of the aqueous phase byproduct from Fischer-Tropsch synthesis reaction at present is not economical and pollutes the environment. The method adopts the following steps: the aqueous phase byproduct enters the middle partof a common rectifying tower 1, a distillate stream I with the boiling range of 50-120 DEG C is extracted at a lateral line, a light component with the boiling range of less than 40 DEG C is obtainedat the top of the tower, and a heavy component with the boiling range of more than 120 DEG C is obtained at a kettle of the tower; and the distillate stream I is rectified and separated by an aceticacid cutting tower 2, an ethanol cutting tower 3, an acetic acid extraction tower 4, an extracting and rectifying tower 5, an ethanol removing tower 6, an extractant recovering tower 7, a solvent recovering tower and a co-boiling rectifying tower 9 so as to obtain acetone, methano, ethanol, n-propanol and a basic organic raw material of acetic acid, and such a technical scheme better solves the problem and can be used in the industrial production for treating the aqueous phase byproduct from the Fischer-Tropsch synthesis.

Description

technical field [0001] The invention relates to a method for separating the water-phase by-product of Fischer-Tropsch synthesis reaction. Background technique [0002] With the increase of demand for liquid fuels based on petroleum and the reduction of available reserves of petroleum resources, the method of producing usable liquid fuels from solid fuels such as coal has attracted more and more attention. There are two different technical routes for the liquefaction of solid fuels, one is direct liquefaction and the other is indirect liquefaction. Direct liquefaction is a process of directly converting solid fuels such as coal into liquefied oil under the action of solvents and catalysts under high temperature and pressure. The operating conditions of direct liquefaction are harsh and highly dependent on raw materials. Indirect liquefaction, commonly referred to as Fischer-Tropsch synthesis, is the synthesis gas containing carbon monoxide and hydrogen produced by solid fue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/74C07C45/78C07C51/42C07C53/08C07C31/02
Inventor 钟禄平肖剑钟思青顾军民
Owner CHINA PETROLEUM & CHEM CORP
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