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Separating and recycling method and system for heavy oil deposit rich in carbonate

A technology for separation and recovery of heavy oil mines, which is applied in the fields of sedimentation, separation of heavy oil, crystallization, filtration, crushing, distillation, and reaction, to achieve the effect of reducing environmental protection treatment costs, reducing environmental problems, and high efficiency

Active Publication Date: 2016-10-12
TIANJIN UNIV
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  • Summary
  • 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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  • Separating and recycling method and system for heavy oil deposit rich in carbonate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A separation and recovery method and system for carbonate-rich heavy oil ore, the steps are as follows:

[0052] ⑴ 15kg of oil sand crushed by crushing device A (carbonate content 42%, maximum particle size 0.5cm) is sent to mixing-reactor B and hydrochloric acid with a pH of 1 according to the solid-to-liquid ratio of 1:30 (mass ratio) Mix well and react at room temperature for 1 hour.

[0053] (2) After the asphalt foam obtained by the above reaction is degassed by C, add naphtha of 0.5 times the foam quality to carry out solid-liquid separation (secondary sedimentation and secondary centrifugation D), and the moisture content in the separated upper oil phase clear liquid is less than 3.5%. The solid content is less than 1.5%, and it enters E for separation, and the solvent is recovered, and the asphalt oil product 14 is obtained at the same time, and the asphalt recovery rate is 99.1%.

[0054] (3) The emulsion and solid precipitate obtained by the solid-liquid sepa...

Embodiment 2

[0058] A separation and recovery method and system for carbonate-rich heavy oil ore, the steps are as follows:

[0059] ⑴ 15kg of oil sand crushed by crushing device A (carbonate content 61%, maximum particle size 5cm) is sent to mixing-reactor B and hydrobromic acid with a concentration of 2 mol / liter according to the solid-liquid ratio of 1:3 (Mass ratio) Mix well at room temperature and react for 120 minutes.

[0060] (2) After the degassing operation of C, add 5 times the volume of gasoline for solid-liquid separation (three-stage sedimentation and three-stage centrifugation), the moisture content of the upper oil phase clear liquid obtained after separation is less than 1.5%, and the solid content is less than 1.5%. , into E for separation and recovery of solvent, while obtaining asphalt oil product 14, the recovery rate of asphalt is 98.7%.

[0061] (3) The emulsion and solid precipitate obtained from the solid-liquid separation device D are sent to the pickling tank F ...

Embodiment 3

[0065] A separation and recovery method and system for carbonate-rich heavy oil ore, the steps are as follows:

[0066] (1) 15kg of oil sludge crushed by crushing device A (carbonate content 56%, maximum particle size 1.5cm) is sent to mixing-reactor B with nitric acid with a concentration of 3 mol / liter according to the solid-liquid ratio of 1:3 ( mass ratio) were fully mixed at room temperature, and reacted for 120 minutes.

[0067] (2) After the obtained asphalt foam is degassed by C, 5 times the volume of naphtha and kerosene (volume ratio, 1:1) are added for solid-liquid separation (two-stage sedimentation and three-stage suspension D), and the separated upper oil phase is clear The water content in the liquid is less than 1.5%, and the solid content is less than 1.5%. It enters E for separation, and the solvent is recovered. At the same time, the asphalt oil product 14 is obtained, and the asphalt recovery rate is 99.3%.

[0068] (3) The emulsion and solid precipitate o...

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Abstract

The invention relates to a separating and recycling method and system for heavy oil deposit rich in carbonate. Carbonate mineral substance containing heavy oil resources such as oil sand, oil shale and oily sludge are mixed with a prepared solution and a chemical additive for reacting under the certain condition, mineral substances in the heavy oil deposit are dissolved, and then the purpose of separating heavy oil from mineral particles is achieved; the separated heavy oil is subjected to subsequent processing treatment to further remove entrained water and solid particles, and a clean heavy oil product is obtained; waste liquid and mineral substance precipitates which are generated in the previous process are recycled separately, and then harmless discharge is finally achieved. Therefore, not only is the heavy oil extracted out from the oil deposit effectively, but also energy sources are greatly saved, and the energy-saving and emission-reducing production purposes of normal-temperature extracting or heavy oil recycling are achieved.

Description

technical field [0001] The invention relates to a separation method for separating heavy oil from carbonate-rich heavy oil ore, belongs 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] Heavy oil deposits (such as oil sands, oil shale, ground oil, oil sludge, etc.) are a complex mixture of heavy 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 oil. [0003] Oil sand mining can be divid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/04C10G1/00
CPCC10G1/002C10G1/04C10G1/045C10G2300/10
Inventor 何林隋红李鑫钢丛山许长春
Owner TIANJIN UNIV
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