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Method for separating oxygenated chemicals and 1-hexene from Fischer-Tropsch synthesis oil product

A technology of Fischer-Tropsch synthesis and compounds, applied in the purification/separation of oxygenates, preparation of oxygenates, chemical instruments and methods, etc., which can solve the problems of low economic value

Active Publication Date: 2016-07-20
YANKUANG ENERGY R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

C 6 The carbon number of oxygenated compounds in distillate oil is mainly C 2 ~C 5 , after hydrodeoxygenation, most of them are converted into LPG components, and the economic value is very low

Method used

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  • Method for separating oxygenated chemicals and 1-hexene from Fischer-Tropsch synthesis oil product
  • Method for separating oxygenated chemicals and 1-hexene from Fischer-Tropsch synthesis oil product
  • Method for separating oxygenated chemicals and 1-hexene from Fischer-Tropsch synthesis oil product

Examples

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Effect test

Embodiment 1

[0081] A method for separating oxygen-containing compounds and 1-hexene from Fischer-Tropsch synthetic oil, the method uses Fischer-Tropsch synthetic oil as raw material, and cuts in a pre-cut tower to obtain C 6 Distillate stream 3, operated with two extractant feeds to obtain oxygenate-enriched stream 9 and crude C after removal of oxygenates in the extraction column 6 Hydrocarbon stream 7; then use the third extractant to further remove crude C 6 Oxygenated compounds in hydrocarbon stream 7, then use methanol to convert tertiary olefins into corresponding ethers under the action of an etherification catalyst and remove them, then further purify by rectification, and then sequentially use the fourth extractant and the fifth extractant Removal of C 6 Isomerization of the paraffin component and cycloolefin component yields 1-hexene product stream 27.

[0082] Its process is as follows figure 1 As shown, the specific operating conditions of each unit in the process flow are:...

Embodiment 2

[0087] A method for separating oxygen-containing compounds and 1-hexene from Fischer-Tropsch synthetic oil, the method uses Fischer-Tropsch synthetic oil as raw material, and cuts in a pre-cut tower to obtain C 6 Distillate stream 3, operated with two extractant feeds to obtain oxygenate-enriched stream 9 and crude C after removal of oxygenates in the extraction column 6 Hydrocarbon stream 7; then use the third extractant to further remove crude C 6 Oxygenated compounds in hydrocarbon stream 7, then use methanol to convert tertiary olefins into corresponding ethers under the action of an etherification catalyst and remove them, then further purify by rectification, and then sequentially use the fourth extractant and the fifth extractant Removal of C 6 Isomerization of the paraffin component and cycloolefin component yields 1-hexene product stream 27.

[0088] Its process is as follows figure 1 As shown, the specific operating conditions of each unit in the process flow are:...

Embodiment 3

[0092] A method for separating oxygen-containing compounds and 1-hexene from Fischer-Tropsch synthetic oil, the method uses Fischer-Tropsch synthetic oil as raw material, and cuts in a pre-cut tower to obtain C 6 Distillate stream 3, operated with two extractant feeds to obtain oxygenate-enriched stream 9 and crude C after removal of oxygenates in the extraction column 6 Hydrocarbon stream 7; then use the third extractant to further remove crude C 6 Oxygenated compounds in hydrocarbon stream 7, then use methanol to convert tertiary olefins into corresponding ethers under the action of an etherification catalyst and remove them, then further purify by rectification, and then sequentially use the fourth extractant and the fifth extractant Removal of C 6 Isomerization of the paraffin component and cycloolefin component yields 1-hexene product stream 27.

[0093] Its process is as follows figure 1 As shown, the specific operating conditions of each unit in the process flow are:...

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Abstract

The invention relates to a method for separating oxygenated chemicals and 1-hexene from a Fischer-Tropsch synthesis oil product.The method comprises the steps that C6 fraction material flow is obtained through distillation in a predistillation tower by taking the Fischer-Tropsch synthesis oil product as a raw material, and two streams of extraction agents are fed to remove oxygenated chemicals in an extraction tower to obtain material flow rich in the oxygenated chemicals and crude C6 hydrocarbon material flow; the oxygenated chemicals contained in the crude C6 hydrocarbon material flow are further removed through a third extraction agent, tertiary olefins are converted into corresponding ethers through methyl alcohol under the action of an etherification catalyst to be removed, further purification is performed through rectification, and then C6 isoparaffin components and cycloolefin components are removed sequentially through a fourth extraction agent and a fifth extraction agent respectively to obtain 1-hexene product material flow.Compared with the prior art, the method has the advantages of being simple in technological process, low in cost and the like, and not only is 1-hexene separated and purified from the Fischer-Tropsch synthesis oil, but also the oxygenated chemicals can be separated.

Description

technical field [0001] The invention relates to a method for separating and purifying high value-added chemicals in Fischer-Tropsch synthetic oil, in particular to a method for separating and purifying oxygen-containing chemicals and linear α-olefins in high-temperature Fischer-Tropsch synthetic oil. Background technique [0002] In recent years, with the exploitation of oil resources in various countries in the world, oil resources are becoming less and less, especially for many countries that are already scarce in oil resources, such as China. Many countries rely heavily on imports of oil, which not only bears a heavy economic burden, but also endangers the country's own energy security. Therefore, the development of new processes for producing liquid fuels from carbon-based raw materials other than oil, such as coal, natural gas, and coal-bed methane, has attracted widespread attention. . The reaction of using synthesis gas to generate hydrocarbons under the action of ca...

Claims

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Application Information

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IPC IPC(8): C07C7/00C07C7/08C07C7/148C07C11/107C07C27/32C07C27/26
CPCC07C7/005C07C7/08C07C7/14891C07C27/26C07C27/32C07C11/107
Inventor 孙启文杨正伟张宗森
Owner YANKUANG ENERGY R&D CO LTD
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