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A method and system for continuous separation and recovery of carbonate-rich oil sands

A technology for separation and recovery of carbonates, which is applied in the petroleum industry, the preparation of liquid hydrocarbon mixtures, etc., to achieve the effects of cost reduction, convenient and easy access to raw materials, and reduction of environmental protection treatment costs

Active Publication Date: 2018-01-02
天津北海石化工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, an important problem faced by this technology is: a large amount of waste liquid is generated during the production process, and the waste liquid is rich in calcium salts, iron salts and other substances

Method used

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  • A method and system for continuous separation and recovery of carbonate-rich oil sands

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Experimental program
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Effect test

Embodiment 1

[0056] A continuous separation system and method for carbonate-rich oil sands, the specific operations are as follows:

[0057] (1) 15kg of oil sand (carbonate content 42%, maximum particle size 0.5cm) crushed by crushing device A is sent to mixing-reactor B (three reactors are used alternately in parallel) and hydrochloric acid with a pH of 1 according to the solid-liquid The ratio is 1:30 (mass ratio), fully mixed and reacted at room temperature for 1 hour.

[0058] (2) After the degassing operation, 0.5 times the volume of pentane is added to the obtained asphalt foam for solid-liquid separation (secondary sedimentation and first-stage centrifugation), and the moisture content in the upper oil phase clear liquid obtained after separation is less than 3.5%, and the solid content is less than 1.5%. enter E for separation, recover the solvent, and obtain the asphalt oil product 14 at the same time, and the asphaltene content in the asphalt oil product is less than 10%.

[005...

Embodiment 2

[0064] A continuous separation system and method for carbonate-rich oil sands, the specific operations are as follows:

[0065] (1) 15kg of oil sand (carbonate content 61%, maximum particle size 5cm) crushed by crushing device A is sent into mixing-reactor B (four reactors are used in parallel and alternately) and hydrogen bromide with a concentration of 5 mol / liter The acid is fully mixed at room temperature according to the solid-liquid ratio of 1:3 (mass ratio), and reacted for 120 minutes.

[0066] (2) After the degassing operation, the obtained asphalt foam is added with 5 times the volume of heptane for solid-liquid separation (first-stage sedimentation and third-stage centrifugation), and the moisture content in the upper oil phase clear liquid obtained after separation is less than 1.5%, and the solid content is less than 1.5%. enter E for separation, recover the solvent, and obtain the asphalt oil product 14 at the same time, and the asphaltene content in the asphalt ...

Embodiment 3

[0072] A continuous separation system and method for carbonate-rich oil sands, the specific operations are as follows:

[0073] (1) 15kg of oil sludge (carbonate content 56%, maximum particle size 1.5cm) pulverized by pulverizing device A is sent into mixing-reactor B (three reactors are used alternately in parallel) and nitric acid with a concentration of 3 mol / liter according to The solid-liquid ratio is 1:3 (mass ratio), fully mixed at room temperature, and reacted for 120 minutes.

[0074] (2) After the degassing operation, 5 times the volume of hexane is added to the obtained asphalt foam for solid-liquid separation (two-stage sedimentation and three-stage suspension), and the moisture content in the upper oil phase clear liquid obtained after separation is less than 1.5%, and the solid content is less than 1.5%. , enter E for separation, recover the solvent, and obtain the asphalt oil product 14 at the same time, the asphaltene content in the asphalt oil product is less ...

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Abstract

The present invention is a method and system for continuous separation and recovery of carbonate-rich oil sands. Asphalt oil resources containing carbonate minerals, such as oil sands, oil shale, and ground oil sludge, can be combined with The prepared solution and chemical additives are mixed and reacted to dissolve the minerals in the asphalt oil ore, so as to achieve the goal of separating the asphalt oil from the mineral particles. The separated asphalt oil undergoes subsequent processing to further remove entrained water and solid particles to obtain a clean asphalt oil product; while the waste liquid and mineral deposits generated in the process are recycled separately to achieve harmless discharge. This not only effectively extracts asphalt oil from the mine, but also greatly saves energy, and realizes the production goals of energy saving and emission reduction of normal temperature extraction or recovery of asphalt oil.

Description

technical field [0001] The invention relates to a method and system for continuous separation and recovery of carbonate-rich oil sands, belonging to the technical field of chemical separation and reaction engineering, and specifically relates to crushing, reaction, sedimentation, filtration, distillation, crystallization and other methods. Background technique [0002] Bituminous oil deposits (eg, oil sands, oil shale, ground oil, oil sludge, etc.) are a complex mixture of bitumen oil (or bitumen), sand, clay and a small amount of water. Because of its huge processing capacity, it has gradually become a reserve oil resource. Taking oil sands as an example, its proven reserves account for about one-third of the total existing oil resources, and the technically recoverable reserves are about 651 billion barrels, mainly distributed in Canada, Venezuela, the United States, Russia, Indonesia and China It is a potential alternative energy source for petroleum. [0003] Oil sand ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/04
CPCC10G1/045
Inventor 李研程婧张庭云
Owner 天津北海石化工程有限公司