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
CN102391185AActive Publication Date: 2012-03-28TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2012-03-28

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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.
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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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