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Method for quickly separating chain hydrocarbon and phenols from medium and low temperature tar

A low-temperature tar, low-temperature coal tar technology, applied in the direction of tar processing by selective solvent extraction

Inactive Publication Date: 2012-07-18
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of medium-low temperature tar medium-chain hydrocarbon and phenolic fast separation method, solve existing medium-low temperature coal tar process existing The problems of high energy consumption, many and complicated operation procedures, low separation and utilization efficiency of product components, large amount of phenol-containing wastewater, and serious environmental pollution

Method used

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  • Method for quickly separating chain hydrocarbon and phenols from medium and low temperature tar
  • Method for quickly separating chain hydrocarbon and phenols from medium and low temperature tar

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The first type of biphasic organic solvent A: Slowly add n-hexane solvent and cyclohexanone solvent under the condition of sufficient stirring, the volume ratio of n-hexane solvent and cyclohexanone solvent is 1:6; then add a total volume of 2.0‰ by weight Ratio of polycarbamide alcohol, fully mixed system, layered after static, that is, prepared into biphasic organic solvent A;

[0026] The second type of biphasic organic solvent B: Slowly add glycerol and carbon tetrachloride solvent under the condition of sufficient stirring, the volume ratio of glycerol and carbon tetrachloride solvent is 1:6; then add a total volume of 1.5‰ weight Ratio of polycarbonate alcohols, after fully mixing the system to stand still, after layering, it is prepared into a biphasic organic solvent B.

[0027] 2. Method and process for the enrichment and separation of medium chain hydrocarbons and phenolic components of medium and low temperature tar:

[0028] Add medium and low temperature c...

Embodiment 2

[0033] The first type of biphasic organic solvent A: Slowly add kerosene solvent and isopropanol solvent under the condition of sufficient stirring, the volume ratio of kerosene solvent and isopropanol solvent is 1:4; then add the total volume of 1.5‰ weight ratio Polycarbamin alcohol, fully mixed system, layered after static, that is, prepared into biphasic organic solvent A;

[0034] The second type of biphasic organic solvent B: Slowly add chloroform solvent and oil washing solvent under the condition of sufficient stirring, the volume ratio of chloroform solvent and oil washing solvent is 1:8; then add polycarbonate with a total volume of 2.5‰ weight ratio Amino alcohol, after fully mixing the system to stand still, the two-phase organic solvent B is prepared after layering.

[0035] 2. Method and process for the enrichment and separation of medium chain hydrocarbons and phenolic components of medium and low temperature tar:

[0036] To the first type of biphasic organic ...

Embodiment 3

[0041] The first type of biphasic organic solvent A: Slowly add petroleum ether solvent and butanone solvent under the condition of sufficient stirring, the volume ratio of petroleum ether solvent and methyl ethyl ketone solvent is 1:8; then add the total volume of 3.2‰ weight ratio Polycarbamin alcohol, fully mixed system, layered after static, that is, prepared into biphasic organic solvent A;

[0042] The second type of biphasic organic solvent B: Slowly add acetone solvent and carbon disulfide solvent under the condition of sufficient stirring, the volume ratio of acetone solvent and carbon disulfide solvent is 1:5; then add polycarbamide alcohol with a total volume of 2.0‰ weight ratio , after fully mixing the system to stand still and separate the layers, the biphasic organic solvent B is prepared.

[0043] 2. Method and process for the enrichment and separation of medium chain hydrocarbons and phenolic components of medium and low temperature tar:

[0044] Add medium a...

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Abstract

The invention discloses a method for separating chain hydrocarbon and phenols from medium and low temperature tar, and belongs to a processing method in the coking industry in the coal chemical industry. By a separation scheme of two kinds of biphasic organics, the chain hydrocarbon, which serves as a liquid fuel directly, in the conventional medium and low temperature coal tar is mainly concentrated in an upper phase of the first kind of biphasic organic solution, and is separated and purified, the phenols, which serve as important chemical materials, in the conventional medium and low temperature coal tar are mainly concentrated in a lower phase of the first kind of biphasic organic solution, and is further concentrated, separated and purified by the second kind of biphasic organic solution. The method has the advantages that: 1, the chain hydrocarbon in the medium and low temperature coal tar is enriched and quickly separated selectively, and the phenols are enriched and quickly separated selectively; and 2, the separation process is mild in conditions, easy and convenient, the manufacturing cost of the process and equipment is low, the investment is small, payback time is short and the benefit is obvious.

Description

technical field [0001] The invention relates to a processing method in the coking industry of coal chemical industry, in particular to a method for rapid separation of medium-chain hydrocarbons and phenols in medium-low temperature tar. Background technique [0002] Low-temperature coal tar is mainly a liquid mixture obtained by dry distillation of lignite, highly volatile bituminous coal, non-caking coal or weakly caking coal at about 500-700 degrees. Low-temperature coal tar can be processed to obtain liquid fuels mainly composed of chain hydrocarbons, paraffin wax, pitch electrode coke, lubricants, various phenols and anti-corrosion oils and other products. Since my country stores a large amount of lignite, highly volatile bituminous coal, non-caking coal or weakly caking coal that has not yet been exploited and utilized, a large amount of low-temperature coal tar will be associated with these coal types during the conversion process. [0003] At present, the processing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C1/18
Inventor 魏贤勇宗志敏赵亮樊星赵云鹏李鹏王玉高王万里窦有权姚婷温哲周建石陈博
Owner CHINA UNIV OF MINING & TECH
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