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Method for extracting asphalt from oil sand through solvent

A solvent and asphalt technology, which is applied in the petroleum industry and the preparation of liquid hydrocarbon mixtures, etc., can solve the problems of not extracting asphalt, and achieve the effects of low equipment investment cost, low energy consumption, and light pollution

Inactive Publication Date: 2013-06-05
BAOLUTE TECH BEIJING
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Problems solved by technology

[0004] Therefore, there is currently no mature method for solvent extraction of bitumen from such oil sands in the world

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  • Method for extracting asphalt from oil sand through solvent

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Embodiment Construction

[0038] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] Such as figure 1 A method for extracting asphalt from oil sands by solvent is shown, and the process is described as follows: the asphalt-containing oil sands are transported to the crusher 1 for crushing the raw ore of oil sand asphalt, and are broken into particles with D<10mm; The belt conveying machine sends it to the hopper, and then the reciprocating automatic feeder sends the granular oil sand to the coarse sand settling tank 2, stirs, mixes and settles with the added solvent at a slow speed, and then sends it to the stirring tank 12 with a screw pump for m...

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Abstract

A method for extracting asphalt from oil sand through a solvent comprises the following steps: step one, conveying oil sand containing asphalt to a crusher for crushing, conveying the crushed oil sand to a coarse sand settling tank, stirring, mixing, and settling with a solvent entering the coarse sand settling tank; step two, conveying the oil sand after stirring, mixing, and settling in the coarse sand settling tank to a stirring tank, stirring with a solvent entering the stirring tank, performing solvent extraction to form mixed slurry; step three, performing centrifugation separation of the mixed slurry after stirring in the stirring tank; processing the separated solid particles in a sand gravel subsequent processing apparatus, discharging residual sand gravel; performing subsequent processing of the separated solution containing asphalt in an asphalt subsequent processing apparatus, and storing the obtained asphalt in an asphalt storage tank. The invention performs extraction of asphalt in oil sand by using a solvent extraction method; the whole process is a physical process, which is less in pollution, can maintain original properties of asphalt, and is a most effective process for oil sand application to road building materials.

Description

technical field [0001] The patent of the invention relates to the technical field of oil extraction and smelting, in particular to a method for extracting asphalt from oil sands by solvent. Background technique [0002] Oil sand refers to the general designation of the mixture of debris or rocks on the surface of the earth's crust and the water and bitumen contained therein. It has huge reserves and is currently the most important potential oil resource in the world. [0003] How to extract asphalt from oil sands with high efficiency, low energy consumption and low pollution has always been one of the problems that plague the development of the industry. Especially for some special oil sands (such as the oil sands originating in Budeng Island, Indonesia), its characteristics are: 1) It begins to soften at a low temperature of 200°C, and the bonding phenomenon becomes more and more serious as the temperature increases , when the temperature reaches above 420℃, with the outpu...

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Application Information

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IPC IPC(8): C10G1/04
Inventor 李庆寨
Owner BAOLUTE TECH BEIJING
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