Separation method and system for carbonate-rich heavy oil deposits

A heavy oil ore and separation system technology, applied in the fields of reaction, crushing, filtration, sedimentation, and distillation, to achieve the effects of cost reduction, fast reaction speed, and environmental protection treatment costs

Active Publication Date: 2017-12-29
浙江省宁波市威欧思能源科技发展有限公司
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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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  • Separation method and system for carbonate-rich heavy oil deposits

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Comparison scheme
Effect test

Embodiment 1

[0053] A high-efficiency separation method and system for carbonate-rich heavy oil deposits, the steps are as follows:

[0054] (1) 15kg of oil sand crushed by crushing device A (carbonate content 42%, maximum particle size 0.5cm) is sent to mixing-reactor B (two-stage parallel connection) and sulfuric acid with a pH of 1 according to the solid-to-liquid ratio of 1: 30 (mass ratio) and mix well at room temperature and react for 1 hour.

[0055] (2) After the degassing operation of C, the obtained asphalt foam is added with 0.5 times the volume of pentane into the solid-liquid separation device D for solid-liquid separation. The water content of the upper oil phase clear liquid obtained after separation is less than 2.5%, and the solid content is less than 1.5%. Separation is carried out in the process, the solvent is recovered, and a deasphaltenized asphalt oil product 14 is obtained at the same time. The recovery rate of asphalt oil is 89.2%, and the asphaltene content is les...

Embodiment 2

[0061] A high-efficiency separation method and system for carbonate-rich heavy oil deposits, the steps are as follows:

[0062] (1) 15kg of oil sand (carbonate content 61%, maximum particle size 5cm) crushed by the crushing device A is sent into the mixing-reactor B (three-stage parallel connection) and phosphoric acid with a concentration of 2 mol / liter according to the solid-liquid ratio 1:3 (mass ratio) fully mix and react at room temperature for 2 hours, and switch operations in turn.

[0063] (2) After the degassing operation of C, the obtained asphalt foam is added with 5 times the volume of pentane for solid-liquid separation. The water content in the upper oil phase clear liquid obtained from the separation is less than 1.5%, and the solid content is less than 0.5%. It enters E for separation and recovery of solvent , while obtaining deasphaltenized asphalt oil product 14, the recovery rate of asphalt oil is 85.8%, and the asphaltene content is less than 3.5%.

[0064...

Embodiment 3

[0069] A high-efficiency separation method and system for carbonate-rich heavy oil deposits, the steps are as follows:

[0070] (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 oxalic acid with a concentration of 3 mol / liter according to the solid-liquid ratio of 1:3 ( Mass ratio) fully mixed and reacted at normal temperature for 120min, after mixing, enter the degassing device to degas the foam;

[0071](2) After the obtained asphalt foam is degassed by C, 5 times the volume of heptane is added for solid-liquid separation. The upper oil phase clear liquid obtained by solid-liquid separation device D has a moisture content of less than 1.5%, and a solid content of less than 1.5%, and enters the solvent The recovery device is used for solvent recovery and at the same time to obtain asphalt oil products. The recovery rate of asphalt oil is 88.7%, and the asphaltene content is less than 5%. ...

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PUM

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Abstract

The invention relates to a separation method and system for carbonate-rich heavy oil ore. Heavy oil resources containing carbonate minerals, such as oil sands, oil shale, landing oil sludge, etc., are mixed with the prepared solution and chemical additives under certain circumstances to react and transform the minerals in the heavy oil ore , so as to achieve the goal of separating heavy oil from mineral particles. The separated heavy oil undergoes subsequent processing to further remove the entrained water and solid particles to obtain a clean heavy oil product; while the waste liquid and mineral deposits generated in the process are recycled separately to achieve harmless treatment. emission. This not only effectively extracts heavy oil from mines, but also greatly saves energy, and realizes the production goals of energy saving and emission reduction of normal temperature extraction or recovery of heavy oil.

Description

technical field [0001] The invention relates to a high-efficiency separation method and system for carbonate-rich heavy oil ore, which belongs to the technical field of chemical separation and reaction engineering, and specifically relates to crushing, reaction, sedimentation, filtration, distillation 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 petroleum. [0003] Oil sand mining can be divided i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/04C10G1/00
CPCC10G1/002C10G1/04C10G1/045C10G2300/10
Inventor 李研程婧张庭云
Owner 浙江省宁波市威欧思能源科技发展有限公司
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