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Method and device for extracting asphalt from oil sand through solvent extraction

A solvent and oil sand technology, applied in the field of petroleum extraction and smelting, can solve the problems of large water content changes in raw materials, high fine powder content, and large dust, and achieve low equipment investment costs, low solvent loss, and less investment.

Inactive Publication Date: 2013-02-13
北京润达油气工程股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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°C, with the output of oil and gas, the bonding phenomenon disappears and becomes semi-coke slag powder; 2) The content of fine powder in semi-coke is particularly large, and the dust is large, and the dry distillation oil gas contains a lot of dust; 3) The raw material contains The amount of water changes greatly, and it is difficult to dry and dehydrate; 4) It is difficult to crush the oil sand. Due to the bonding effect of asphalt and the frictional heat generated by the crushing machinery, the broken oil sand is easy to rebond or even harden into a block material, which cannot be carried out. Subsequent processing
[0004] Therefore, there is currently no mature method for extracting bitumen from such oil sands in the world

Method used

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  • Method and device for extracting asphalt from oil sand through solvent extraction

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Embodiment 1

[0056] This embodiment provides a device for extracting asphalt from oil sands through solvent extraction, its structure is as follows figure 1 shown.

[0057] The device includes a crushing and screening machine 1, a stirring tank 2, a secondary screening machine 3, a centrifugal filter 4, a dryer 5, an asphalt solution tank 6, a heating furnace 7, a distillation tower 8, a solvent tank 9, a heat exchanger 10, an intermediate Tank 11, first water condenser 12, second water condenser 13, vacuum pump 14, wherein,

[0058] The crushing and screening machine 1 communicates with the entrance of the stirring tank 2, and a lifting hopper is arranged between the two;

[0059] The outlet of the stirred tank 2 is communicated with the inlet of the secondary screening machine 3;

[0060] The secondary screening machine 3 communicates with the entrance of the intermediate tank 11 and the entrance of the centrifugal filter 4 respectively;

[0061] The outlet of intermediate tank 11 com...

Embodiment 2

[0071] This embodiment provides a method for extracting bitumen from oil sands, which is carried out using the extraction device provided in Example 1, and includes the following specific steps:

[0072] 1. Take 100.5 kg of bitumen-containing oil sand (oil content 25%, water content 1.2%, gravel particle size 2-3000 μm, mainly CaCO 3 and SiO 2 ) is transported to the crushing and screening machine 1 for crushing the raw ore of oil sand asphalt, and crushed into particles with a diameter below 50 mm, and the particles larger than 50 mm are returned to the crushing and screening machine 1 for crushing again;

[0073] Then the granular oil sand with diameter D3 Dichlorohydrocarbons: C 8 Aromatic hydrocarbons volume ratio=2:1, distillation range range: 60-140 ℃) carry out mixing and stirring, stirring speed is 180 rpm, and stirring time is 15 minutes, obtains mixed slurry; The recovery solvent at the top is exchanged in the heat exchanger 10 to increase the temperature to 60° C....

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Abstract

The invention relates to a method and a device for extracting asphalt from oil sand through solvent extraction. The method comprises steps as follows: step 1, crushing and sieving asphalt-containing oil sand, mixing sieved oil sand with solvent at a temperature of 30 to 90 DEG C, and agitating, then extracting a solvent, so as to obtain mixed size; step 2, sieving the mixed size at the second time to remove rough sand, so as to obtain fine sand size; and step 3, centrifugally separating the fine sand size to obtain fine sand, separating the rest asphalt solution to obtain the asphalt, and removing the solvent. The invention also provides the device for extracting the asphalt from the oil sand through the solvent extraction. According to the method for extracting the asphalt from the oil sand provided by the invention, the method of extracting the solvent is carried out to extract the asphalt in the oil sand, and all processes in the method are physical processes, so little pollution is generated, and original nature of the asphalt can be kept; and the method is one of the most efficient technologies for applying the oil sand as a road building material.

Description

technical field [0001] The invention relates to a method and a device for extracting asphalt from oil sand through solvent extraction, and belongs to the technical field of oil extraction and smelting. 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 heavy oil or bitumen contained therein. The reserves are very huge and are currently an 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 this 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...

Claims

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Application Information

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IPC IPC(8): C10G1/04
Inventor 谭华平李术元马跃余姝丽
Owner 北京润达油气工程股份有限公司
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