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Method for separating tar sand oil through heterogeneous reaction

A multi-phase reaction and oil sand oil technology, applied in the field of oil sand processing, can solve the problems of flue gas pollution, need a lot of heat energy, high oil content in tailings, achieve wide applicability, avoid solvent loss, and improve product quality. Effect

Active Publication Date: 2015-12-23
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Solvent extraction is generally applied to oil sands with high oil content, and most of the oil sands can be recovered, but it is often difficult to clean the oil sands thoroughly with simple solvent extraction, and the oil content of tailings is still high
CN103484144A discloses a solvent and method for extracting oil in oil sands. In this method, by mixing the solvent with the oil sands, heating and stirring, the bitumen recovery rate is 90%-98%, and the oil content of the tailings is still high, so it cannot be discharged directly
CN102504850A discloses a low-temperature dry distillation process of oil sand solid heat carrier, which uses burning part of the oil sand to form 800°C high-temperature slag, and then mixes the high-temperature slag with the oil sand to provide heat for thermal dry distillation, and the dry distillation gas is recovered after cooling. A large amount of heat energy produces a large amount of flue gas to pollute the environment, and the oil recovery rate is generally lower than 70%. This method is rarely used in industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 100g of Indonesian oil sand, mix with 100ml of alkaline water detergent and 50ml of organic solvent, heat and stir in a water bath, set the heating temperature to 50°C, and stir for 20 minutes. After the stirring, the sample was separated into layers, and the mixture of oil sand oil and solvent in the upper layer was overflowed and separated, and the solvent was removed by distillation, and the product oil sand oil was obtained at the same time. Centrifuge the mixture of lower wash and tailings. The tailings obtained by centrifugation were dried, and the oil content was measured, and the oil sand oil recovery rate of the oil sand sample was 99.5%;

[0019] Described alkaline washing agent is the sodium hydroxide solution of 2wt%.

[0020] Described organic solvent is sherwood oil.

Embodiment 2

[0022] Take 100g of Indonesian oil sand, mix with 50ml of alkaline water detergent and 100ml of organic solvent, heat and stir in a water bath, set the heating temperature to 70°C, and stir for 20 minutes. After the stirring, the sample was separated into layers, and the mixture of oil sand oil and solvent in the upper layer was overflowed and separated, and the solvent was removed by distillation, and the product oil sand oil was obtained at the same time. Centrifuge the mixture of lower wash and tailings. The tailings obtained by centrifugation were dried, and the oil content was measured, and the oil sand oil recovery rate of the oil sand sample was 99.7%;

[0023] Described alkaline washing agent is the sodium hydroxide solution of 5wt%.

[0024] The organic solvent is prepared from 93# gasoline and 0# diesel at a volume ratio of 1:1.

Embodiment 3

[0026] Take 100g of Indonesian oil sand, mix with 100ml of alkaline water detergent and 100ml of organic solvent, heat and stir in a water bath, set the heating temperature to 95°C, and stir for 20 minutes. After the stirring, the sample was separated into layers, and the mixture of oil sand oil and solvent in the upper layer was overflowed and separated, and the solvent was removed by distillation, and the product oil sand oil was obtained at the same time. Centrifuge the mixture of lower wash and tailings. The tailings obtained by centrifugation were dried, and the oil content was measured, and the oil sand oil recovery rate of the oil sand sample was 99.8%;

[0027] Described alkaline washing agent is the sodium hydroxide solution of 10wt%.

[0028] Described organic solvent is toluene.

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Abstract

The invention relates to a method for separating tar sand oil through a heterogeneous reaction. According to the method disclosed by the invention, the core is multi-phase extraction, and oil sand, a solvent and alkaline water lotion are mixed in proportion to form a unique multi-phase extraction system, so that a separating effect of oil sand oil in the oil sand is effectively increased, and the recovery rate of the oil sand oil is more than 99.5 percent; in addition, the solvent and the alkaline water lotion in a reaction process are recoverable and can be recycled; the oil content of tailings after the reaction is generally less than 0.3 percent, and the tailings can be directly discharged.

Description

technical field [0001] The invention relates to the field of oil sand processing, in particular to a method for separating oil sand oil by multiphase reaction. Background technique [0002] Oil sand is an important unconventional energy source. It is generally composed of heavy oil such as sand, clay, water and asphalt. After processing, a large amount of heavy oil can be obtained, and the reserves of oil sand are huge. Therefore, the importance of oil sand is increasingly valued , The development process is gradually deepening. At present, the methods for separating oil sands mainly include hot alkali water washing separation method, solvent extraction method, ionic liquid-assisted extraction method, pyrolysis dry distillation method and so on. [0003] In the hot alkali water washing separation method, hot alkaline water is used as a separating agent, which can react with asphalt in oil sands to form carboxylic acid surfactants, reduce the surface tension between asphalt ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/04
Inventor 韩冬云罗宽勇李文岐曹祖宾
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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