Composite extractant for extracting oxygen-containing compounds in C5 hydrocarbon raw material and method for treating oxygen-containing compounds in C5 hydrocarbons

A compound extractant and extractant technology, applied in the refining of hydrocarbon oil, petroleum industry and other directions, can solve the problems of easy loss and large loss of olefin, and achieve the effects of simple device, low cost and excellent removal effect.

Active Publication Date: 2021-04-09
CHINA ENERGY GRP NINGXIA COAL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the by-product C5 hydrocarbons from Fischer-Tropsch naphtha cracking to ethylene are rich in carbopentadiene, they are easily lost in the process of removing oxygenates. The current deoxygenation methods have too much loss of olefins, so it is necessary Development of a method for reducing olefin losses in the deoxygenation of C5 hydrocarbons

Method used

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  • Composite extractant for extracting oxygen-containing compounds in C5 hydrocarbon raw material and method for treating oxygen-containing compounds in C5 hydrocarbons
  • Composite extractant for extracting oxygen-containing compounds in C5 hydrocarbon raw material and method for treating oxygen-containing compounds in C5 hydrocarbons
  • Composite extractant for extracting oxygen-containing compounds in C5 hydrocarbon raw material and method for treating oxygen-containing compounds in C5 hydrocarbons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The non-alcoholic polar extractant furfural is compounded with the organic alcohol 1,4-butanediol, wherein the furfural is 50% by weight and the 1,4-butanediol is 50% by weight.

[0041]Put 150mL of the by-product C5 hydrocarbon raw material produced by Fischer-Tropsch naphtha cracking into ethylene, fully mix it with 300mL of composite extractant at a temperature of 10°C and a pressure of 0.05MPa, and put it into a glass reactor with mechanical stirring, and seal the reactor In good condition, the rotation speed is 400r / min. After stirring for 30 minutes, put the mixed material into a pear-shaped separatory funnel and let it stand for 10 minutes to separate. Take out the oil phase and wash it with water equal to the volume of the oil. Remove the carried extractant from the water The phase is carried out, and the upper oil phase is taken for analysis, and the above steps are repeated for 5 times. At the same time, the extractant is recovered by rectification. The rectifi...

Embodiment 2

[0043] Compound non-alcoholic polar extractant dimethyl sulfoxide and organic alcohol ethylene glycol, wherein the weight percentage of dimethyl sulfoxide is 80%, and the weight percentage of ethylene glycol is 20%.

[0044] Put 60mL of the by-product C5 hydrocarbon raw material produced by Fischer-Tropsch naphtha cracking into ethylene, at a temperature of 20°C and a pressure of 0.086MPa, fully mix it with 300mL of a composite extractant, put it into a glass reactor with mechanical stirring, and seal the reactor In good condition, the rotation speed is 600r / min. After stirring for 60 minutes, put the mixed material into the pear-shaped separatory funnel and let it stand for 15 minutes to separate. Take out the oil phase and wash it with water equal to the volume of the oil. Remove the carried extractant from the water The phase is taken out, the upper oil phase is taken for analysis, the extraction method is repeated twice, and the extractant is recovered by rectification. The...

Embodiment 3

[0046] The non-alcoholic polar extractant N-methylpyrrolidone is compounded with organic alcohol methanol, wherein the weight percent of N-methylpyrrolidone is 60%, and the weight percent of methanol is 40%.

[0047] Put 300mL of the by-product C5 hydrocarbon raw material produced by Fischer-Tropsch naphtha cracking into ethylene, fully mix it with 300mL of composite extractant at a temperature of 30°C and a pressure of 0.1MPa, and put it into a glass reactor with mechanical stirring, and seal the reactor In good condition, the rotation speed is 500r / min, after stirring for 90 minutes, put the mixed material into the pear-shaped separatory funnel and let it stand for 20 minutes to separate, take out the oil phase, wash it with water equal to the volume of the oil, and remove the carried extractant from the water The phase is carried out, and the upper oil phase is taken for analysis, and the above steps are repeated for 4 times. At the same time, the extractant is recovered by ...

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Abstract

The invention relates to the field of fine chemical engineering, and discloses a composite extractant for extracting an oxygen-containing compound in a C5 hydrocarbon raw material and a method for treating the oxygen-containing compound in C5 hydrocarbon, the composite extractant comprises a non-alcohol polar extractant and organic alcohol, and the weight ratio of the non-alcohol polar extractant to the organic alcohol is 0.5-9: 1. The composite extractant is used for treating the oxygen-containing compound in the C5 hydrocarbon raw material, the oxygen-containing compound in the C5 hydrocarbon raw material can be effectively removed, the loss rate of olefin in the extraction process of the C5 hydrocarbon raw material is reduced, and then the loss of the composite extractant is reduced.

Description

technical field [0001] The invention relates to the field of fine chemical industry, in particular to a composite extraction agent for extracting oxygen-containing compounds in C5 hydrocarbon raw materials and a method for treating oxygen-containing compounds in C5 hydrocarbons. Background technique [0002] A large number of light hydrocarbon by-products, such as C5 hydrocarbons, are produced in the processing and production of oil and natural gas. It itself is a high value-added petrochemical product, but since the boiling points of the components in C5 hydrocarbons are not much different, it requires a lot of investment and energy consumption to obtain high-purity products. However, using C5 hydrocarbons directly as gasoline blending components not only has the characteristics of low octane number, but also needs to pay consumption tax, which is not economical. If they are converted into other high-purity products, the added value of the product can be increased. [0003...

Claims

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Application Information

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IPC IPC(8): C10G21/16C10G21/06
CPCC10G21/16C10G21/06
Inventor 朱楠李晓东石博文袁玉龙袁华吴荣炜张安贵杨震孙向前杨自玲
Owner CHINA ENERGY GRP NINGXIA COAL IND CO LTD
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