Oil sand separation method

A separation method and oil sand technology, which is applied in the petroleum industry, the preparation of liquid hydrocarbon mixtures, etc., can solve the problems of asphalt residue, etc., and achieve the effect of low production cost and short construction period
CN109181739AActive Publication Date: 2019-01-11凌港
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
凌港
Publication Date
2019-01-11

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Abstract

The invention discloses an oil sand separation method, and belongs to the technical field of oil sand separation. The oil sand separation method comprises following steps: an oil sand raw material issubjected to crushing and drying, and is introduced into an extractor; the oil sand raw material is subjected to extraction using a composite solvent in the extractor so as to obtain an asphalt and composite solvent mixed oil through separation; the asphalt and composite solvent mixed oil is pumped into a filter, impurities are removed, and the asphalt and composite solvent mixed oil is pumped into a distillation still for evaporation so as to obtain asphalt oil, and the asphalt oil is pumped into an asphalt tank; the composite solvent gas is converted into liquid through condensation for recycling; a mixed material obtained in the extractor is heated to 90 to 130 DEG C, the vacuum degree is controlled to be 2 to 3KPa, stirring is carried out, the composite solvent in tailings is convertedinto gas state for discharging, the composite solvent gas is subjected to condensation so as to obtain a liquid for recycling, and tailings output is carried out. According to the oil sand separationprocess, the specific composite solvent and technological parameters are adopted for processing of oil sand, the asphalt extraction rate in oil sand is 97% or higher, and asphalt left in the tailingsis low.
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Description

technical field

[0001] The invention relates to the technical field of oil sand separation, in particular to an oil sand separation method. Background technique

[0002] Oil sands refer to sedimentary sands rich in natural bitumen, hence the name "tar sands". Oil sand is essentially a mixture of asphalt, sand, rich ore clay and water, in which the content of asphalt is 10-16% (Canada) or 22.54-33.72% (Indonesia), and minerals such as sand and clay account for 60-85%. The rest is water.

[0003] my country is one of the countries rich in oil sand resources in the world, ranking fifth in the world. It is preliminarily estimated that there are 100 billion tons of oil sands in China, and about 10 billion tons of recoverable oil resources. Mainly distributed in Xinjiang, Qinghai, Tibet, Sichuan, Guizhou. In addition, Guangxi, Zhejiang, and Inner Mongolia are also distributed. my country's oil sand prospect resources are 10 billion tons, and it is estimated that by 2050, the ...

Claims

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