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Ionic liquid for assisting oil-sand separation and separation method

An ionic liquid and auxiliary oil technology, which is used in the petroleum industry, the preparation of liquid hydrocarbon mixtures, and organic chemistry, etc., can solve the problems of not considering the degree of separation, large pollution of organic solvents, and large loss of reagents, and achieves low viscosity and environmental pollution. The effect of small, water-saving reagent losses

Active Publication Date: 2012-03-28
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not consider the introduction of ionic liquids to enhance the degree of separation, the loss of reagents is large, and the residual organic solvents in the residual sand are more polluted.
China CN101148392A has reported based on ionic liquid to the C with butadiene as the main component 4 A method for the separation of hydrocarbon mixtures, but the extraction organic solvent used is acetonitrile as a single solvent, and there is no content related to the separation of bitumen components from oil sands

Method used

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  • Ionic liquid for assisting oil-sand separation and separation method
  • Ionic liquid for assisting oil-sand separation and separation method
  • Ionic liquid for assisting oil-sand separation and separation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Ionic liquid-assisted oil sands extraction methods with several organic solvents.

[0035] Adopted six kinds of organic solvents to extract respectively, single organic solvent adopts toluene and xylene solution; Compound organic solvent adopts acetone and n-heptane volume ratio to be 2: 6, acetone and sherwood oil volume ratio are 2: 6, toluene: acetone: A solution with a volume ratio of n-heptane of 8:2:6.

[0036] 2kg of Canadian oil sands, 80L of organic solvent, and 2kg of ionic liquid were respectively supplied to the contact extraction tank through the feed port, the mechanical stirrer was turned on, the speed was controlled at 300rpm, and the extraction was carried out at 30°C for 2h. Close the agitator, and let the mixture stand in the contact extraction tank for 30 minutes. After the oil sand settles, open the discharge port and control the flow rate at 200L h -1 Left and right, the first layer of organic mixture phase slowly flows into the separation tank, ...

Embodiment 2

[0040] Auxiliary oil sands extraction method with several ionic liquid dosages.

[0041] The organic solvent is acetone: n-heptane = 2:6 (V / V) compound solvent, and four kinds of ionic liquids are used to extract the oil sands.

[0042] 2kg of Canadian oil sands, 80L of organic solvent, 1kg, 2kg, 3kg, and 4kg of ionic liquid were supplied to the contact extraction tank through the feed port, the mechanical stirrer was turned on, the speed was controlled at 300rpm, and the extraction was carried out at 30°C for 2h. Close the agitator, and let the mixture stand in the contact extraction tank for 30 minutes. After the oil sand settles, open the discharge port and control the flow rate at 200L h -1 Left and right, the first layer of organic mixture phase slowly flows into the separation tank, and the organic mixture and the residual ionic liquid are allowed to stand and separate in the separation tank for 10 minutes. Open the upper discharge port of the separation tank, and the ...

Embodiment 3

[0046] Ionic liquid-assisted oil sands extraction method with several organic solvent dosages.

[0047] As the organic solvent, acetone: n-heptane = 2:6 (V / V) compound solvent was used, and four kinds of organic solvents were used to extract the oil sands.

[0048] Canadian oil sands 2kg, organic solvent volumes 20L, 40L, 60L, 80L, ionic liquid dosage 2kg, supplied to the contact extraction tank through the feed port, turn on the mechanical stirrer, control the speed of 300rpm, stir and extract at 30°C for 2h. Close the agitator, and let the mixture stand in the contact extraction tank for 30 minutes. After the oil sand settles, open the discharge port and control the flow rate at 200L h -1 Left and right, the first layer of organic mixture phase slowly flows into the separation tank, and the organic mixture and the residual ionic liquid are allowed to stand and separate in the separation tank for 10 minutes. Open the upper discharge port of the separation tank, and the orga...

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Abstract

The invention relates to ionic liquid for assisting oil-sand separation and a separation method. According to the separation method, the ionic liquid is 1-ethyl-3-methylimidazole tetrafluoroborate; the range of the mass of added ionic liquid is 1-5 times of the mass of oil sand, and the ratio of the volume of an organic solvent to the mass of the oil sand is 1-12 ml / g so as to extract asphalt; the organic solvent and the ionic liquid simultaneously enter an extraction device so as to carry out extraction separation on the oil sand, and the asphalt separation is carried out under a temperature range of 15-60 DEG C; the organic solvent is collected through distilling at a temperature of 70-200 DEG C, and the rest organic product after distilling is an asphalt product; the residual sand and the ionic liquid are subjected to water cleaning by a small amount of water after oil-sand separation, the residual sand product is cleanly discharged; and the ionic liquid and the water can be recycled through fractionation by distillation. The residual sand and the ionic liquid are cleaned by the small amount of water after the oil-sand separation, thus, water is saved, and further, the loss of ionic liquid reagents is little; and in addition, the assisting separation method has high efficiency for the recovery of the asphalt which can reach 95%, and the residual organic matters in the oil sand is little.

Description

technical field [0001] The invention relates to a separation method for obtaining asphalt components from oil sands, belongs to the technical field of chemical separation, and in particular relates to an ionic liquid and a separation method for assisting the separation of oil sands. Background technique [0002] Oil sands are heavy residual petroleum-impregnated sandstones that are complex mixtures of sand, clay, water and bitumen. Oil sand accounts for about 30% of the world's oil reserves. It is a huge potential oil resource, mainly distributed in Canada, the former Soviet Union, Venezuela, the United States and China's Xinjiang, Inner Mongolia and other places. If these oil sand resources are reasonably exploited and refined , can greatly alleviate the problem of global energy shortage. [0003] At present, oil sands in the world are mainly produced by open-pit mining, and the key technology for refining is oil sands separation technology. One of the most common methods...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D233/58C10G1/04
Inventor 隋红李鑫钢孙文郡韩祯
Owner TIANJIN UNIV
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