Compound solvent for extracting asphalt from oil sand and extracting process

A composite solvent and oil sand technology, applied in the chemical industry, can solve the problems of poor oil sand extraction effect, increased economic loss, low recovery rate, etc., and achieve the effect of reducing operating cost input, reducing waste, and easy separation

Active Publication Date: 2016-07-06
SHANDONG TONGRUN ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN101124302 provides a chemical composition for separating asphalt from oil sand deposits and a method of use. The chemical composition is directly injected into the oil sand bed, and the asphalt oil in the oil sand is stripped underground. Although this method reduces the oil production Sand equipment investment, but the oil sand and the chemical composition cannot be fully contacted after using this method, so the extraction effect of the oil sand is poor, and the extraction agent in this method also stays on the surface of the underground oil sand, resulting in the need for chemical composition in time

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  • Compound solvent for extracting asphalt from oil sand and extracting process

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Effect test

Embodiment 1

[0036] Embodiment one, a kind of asphalt process method with composite solvent extraction, process method is as follows:

[0037] Step 1: Oil sand crushing, using a crusher to crush the oil sand to less than 3cm;

[0038] Step 2: Drying and dehydration, using a drying kiln to reduce the moisture content of the oil sand in step 1 to below 5%;

[0039] Step 3: Solvent extraction, sending the compound solvent and the oil sand obtained in step 2 into the stirring extraction kettle, the ratio of the compound solvent to the oil sand is 1.5:1, and the extraction time is 3 hours;

[0040] The percentage by weight that each material accounts for in the composite solvent is as follows:

[0041] 200# solvent oil 55% butyl acetate 20% petroleum ether (distillation range 90-120 degrees) 15%

[0042] Xylene 5% Dibutyl ether 5%

[0043] Step 4: Ultrasonic extraction, the oil sand obtained in Step 3 is sent to an ultrasonic extraction machine, and the extraction rate of asphaltene heavy oi...

Embodiment 2

[0050] Embodiment two, a kind of asphalt process method with this composite solvent extraction, process method is as follows:

[0051] Step 1: Oil sand crushing, using a crusher to crush the oil sand to less than 3cm;

[0052] Step 2: Drying and dehydration, using a drying kiln to reduce the moisture content of the oil sand in step 1 to below 5%;

[0053] Step 3: Solvent extraction, sending the composite solvent and the oil sand obtained in step 2 into the stirring extraction kettle, the ratio of composite solvent to oil sand is 2:1, and the extraction time is 2 hours;

[0054] The percentage by weight that each material accounts for in the composite solvent is as follows:

[0055] 200# solvent oil 60%

[0056] Butyl acetate 20%

[0057] Petroleum ether (distillation range 90-120 degrees) 13%

[0058] Xylene 3%

[0059] Dibutyl ether 4%

[0060] Step 4: Ultrasonic extraction, the oil sand obtained in Step 3 is sent to an ultrasonic extraction machine, and the extraction ...

Embodiment 3

[0067] Embodiment three, a kind of asphalt process method with this composite solvent extraction, process method is as follows:

[0068] Step 1: Oil sand crushing, using a crusher to crush the oil sand to less than 3cm;

[0069] Step 2: Drying and dehydration, using a drying kiln to reduce the moisture content of the oil sand in step 1 to below 5%;

[0070] Step 3: Solvent extraction, sending the composite solvent and the oil sand obtained in step 2 into the stirring extraction kettle, the ratio of composite solvent to oil sand is 3:1, and the extraction time is 2 hours;

[0071] The percentage by weight that each material accounts for in the composite solvent is as follows:

[0072] 200# solvent oil 65%

[0073] Butyl acetate 22%

[0074] Petroleum ether (distillation range 90-120 degrees) 5%

[0075] Xylene 5%

[0076] Dibutyl ether 3%

[0077] Step 4: Ultrasonic extraction, the oil sand obtained in Step 3 is sent to an ultrasonic extraction machine, and the extraction...

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Abstract

The invention discloses a compound solvent for extracting asphalt from oil sand and an extracting process.The compound solvent comprises a basic solvent and auxiliaries, the basic solvent is 200# solvent oil, and the auxiliaries are butyl acetate, dimethylbenzene, petroleum ether and dibutyl ether.Solvent extraction technology and ultrasonic extraction technology are combined creatively, so that extraction rate is high; the compound solvent can be recycled, normal-temperature technology is adopted for separation process treatment, so that influence on colloid and asphaltene in asphaltic heavy oil is small, and the compound solvent is high in practicability.

Description

technical field [0001] The invention belongs to the product separation technology in the field of chemical industry, and specifically provides a composite solvent for extracting asphalt from oil sands, and also relates to a process method for extracting asphalt with the composite solvent. Background technique [0002] Oil sand, also known as bituminous sand or tar sand, is a sandstone whose surface is covered with heavy oil such as asphalt. It looks like black molasses, and its main components are asphalt, water, clay and gravel. The composition of oil sand deposits in different regions is different. Generally, in oil sands, heavy oil such as bitumen accounts for 3% to 30% by mass, inorganic minerals account for 70% to 85%, and water accounts for 3% to 20%. [0003] More than 90% of the world's oil sands are distributed in North America, and oil sand deposits in the United States and Canada account for hundreds of billions of barrels of proven oil reserves. In the oil sands...

Claims

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Application Information

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IPC IPC(8): C10G1/04
CPCC10G1/04
Inventor 陈龙行王荣生葛长城李永强
Owner SHANDONG TONGRUN ENERGY CO LTD
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