Method for separating component from direct-coal-liquefaction full distillate oil by utilizing solid-phase extraction method

A technology of direct liquefaction of coal and solid phase extraction method, applied in the field of coal chemical industry, can solve the problems of long separation time and poor effect, and achieve the effect of good elution effect, prolonging contact time and increasing contact area.

Active Publication Date: 2012-10-31
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a method for separating the components in the direct coal liquefaction whole distillate oil by solid phase extraction method, so as to solve the problems of long time-consuming separation and poor effect of the separation of each component in the whole distillate oil in the prior art

Method used

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  • Method for separating component from direct-coal-liquefaction full distillate oil by utilizing solid-phase extraction method
  • Method for separating component from direct-coal-liquefaction full distillate oil by utilizing solid-phase extraction method
  • Method for separating component from direct-coal-liquefaction full distillate oil by utilizing solid-phase extraction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take 1.01 g of the sample to be separated as the sample to be separated in Example 1, and place it in the CQ1 column. First wet the stationary phase with 30ml of n-hexane, then wash the sample to be separated attached to the stationary phase with 40ml of n-hexane, control the washing rate of n-hexane solution to 30ml / min, and obtain a saturated hydrocarbon solution; after extracting the saturated hydrocarbons, use 50ml Rinse the extraction column with dichloromethane at a controlled washing rate of 35ml / min to obtain an aromatic hydrocarbon solution; finally rinse the colloid with 40ml of absolute ethanol at a controlled rinsing rate of 30ml / min to obtain a colloidal solution. The n-hexane in the saturated hydrocarbon solution, the dichloromethane in the aromatic hydrocarbon solution, and the absolute ethanol in the colloidal solution were respectively distilled off in a water bath at 90°C to obtain the contents of each component as described in Table 1.

Embodiment 2

[0041] Take 0.53g of the sample to be separated as the sample to be separated in Example 2, and place it in the CQ1 column. Wet the stationary phase with 30ml of n-hexane first, then rinse the sample to be separated attached to the stationary phase with 20ml of n-hexane, control the washing rate of the n-hexane solution to 20ml / min, and obtain a saturated hydrocarbon solution; after extracting the saturated hydrocarbons, use 30ml Rinse the extraction column with dichloromethane, and control the washing rate to 20ml / min to obtain an aromatic hydrocarbon solution; finally wash the colloid with 30ml of absolute ethanol, and control the rinsing rate to 10ml / min to obtain a colloid solution. The n-hexane in the saturated hydrocarbon solution, the dichloromethane in the aromatic hydrocarbon solution, and the absolute ethanol in the colloidal solution were respectively distilled off in a water bath at 90°C to obtain the contents of each component as described in Table 1.

Embodiment 3

[0043] Get 0.40g of the sample to be separated as the sample to be separated in Example 3, and place it in the CQ2 column. Wet the stationary phase with 30ml or 20ml of n-hexane first, then wash the sample to be separated attached to the stationary phase with 20ml of n-hexane, control the washing rate of the n-hexane solution to 30ml / min, and obtain a saturated hydrocarbon solution; after extracting the saturated hydrocarbon, use 20ml Rinse the extraction column with dichloromethane at a controlled washing rate of 20ml / min to obtain an aromatic hydrocarbon solution; finally rinse the colloid with 30ml of absolute ethanol at a controlled rinsing rate of 50ml / min to obtain a colloidal solution. The n-hexane in the saturated hydrocarbon solution, the dichloromethane in the aromatic hydrocarbon solution, and the absolute ethanol in the colloidal solution were respectively distilled off in a water bath at 90°C to obtain the contents of each component as described in Table 1.

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Abstract

The invention provides a method for separating a component from direct-coal-liquefaction full distillate oil by utilizing a solid-phase extraction method. The method comprises the steps of: S1, sampling and absorbing the direct-coal-liquefaction full distillate oil to be separated to a separation column which is formed by a fixed phase; S2, washing at a washing speed of 20-50 ml / min by adopting a saturated hydrocarbon eluting agent having a weight ratio of (10-50):1 to the full distillate oil and collecting a first eluent, wherein the saturated hydrocarbon eluting agent is one or more selected from a group which is composed of n-hexane, n-pentane and petroleum ether; and S3, volatilizing the saturated hydrocarbon eluting agent in the first eluent to obtain a saturated hydrocarbon component. Aiming at the special chemical composition of the direct-coal-liquefaction full distillate oil, the saturated hydrocarbon eluting agent having an excellent elution effect on saturated hydrocarbon is selected in the method; and as the saturated hydrocarbon is separated under the condition of controlling an agent-to-oil ratio and the washing speed, an ideal separation effect of the saturated hydrocarbon and aromatic hydrocarbon in the full distillate oil having high-content aromatic hydrocarbon is achieved.

Description

technical field [0001] The invention relates to the field of coal chemical industry, in particular to a method for separating components in whole distillate oil from coal direct liquefaction by using a solid phase extraction method. Background technique [0002] The direct liquefaction of coal refers to the process in which coal is transformed into liquid fuel through hydrocracking under the action of hydrogen and catalysts. The liquid fuel produced is generally called coal direct liquefaction whole distillate oil. Qualified gasoline and diesel products. [0003] Coal direct liquefaction whole distillate oil has a wide distillation range and complex structure and composition, and is the raw material for secondary hydrofining. The whole distillate oil is first separated and divided into different family components, and then a more in-depth structure group composition analysis or monomer component analysis is performed on each family component. The composition content of dir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G25/00B01D15/08
Inventor 姜元博李克健高山松李永伦杨葛灵章序文邹云冲冯盈之苏娟叶萌
Owner CHNA ENERGY INVESTMENT CORP LTD
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