Method for separating and extracting crude oil from oil sand
A technology for extracting oil and crude oil, which is applied in the petroleum industry and the preparation of liquid hydrocarbon mixtures. It can solve the problems of complex solvent recovery process, low processing capacity, and low crude oil quality, and achieve excellent economic and environmental benefits and simple discharge treatment. , The effect of low solid phase oil content
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Embodiment 1
[0029] In terms of mass ratio, the oil content of the oil sand sample is 6%w / w (6% oil content is the lowest grade oil sand ore), the water content is 8%w / w, and the sediment or mechanical impurities are 86%w / w
[0030] (a) Add diesel oil accounting for 5% by volume to the oil sand and fully stir and mature it;
[0031] (b) add water and emulsifier to the treated oil sand, fully emulsify and disperse to become a suspension with water as the dispersed phase; the volume of water added is 5 times the volume of the treated oil sand; the emulsifier is polyacrylonitrile hydrolyzate ( Ammonium salt) 4% aqueous solution, the added volume accounts for 5% of the treated oil sands volume;
[0032] (c) adding sulfuric acid in the suspension to adjust its pH value to 3;
[0033] (d) add the saturated solution of ferrous sulfate in the acid suspension to make the concentration of ferrous sulfate in the suspension be 3.5 grams per liter, stir;
Embodiment 2
[0039] In terms of mass ratio, the oil content of the oil sand sample is 12%, the water content is 8%, and the sediment or mechanical impurities are 80%.
[0040] (a) Add No. 120 solvent oil that accounts for 10% by volume in the oil sand and fully stir and mature it;
[0041] (b) add water and emulsifier to the treated oil sand, fully emulsify and disperse to become a suspension with water as the dispersed phase; the volume of water added is 6 times the volume of the treated oil sand; the emulsifier is polyacrylonitrile hydrolyzate ( Sodium salt) 4% aqueous solution, the added volume accounts for 5% of the treated oil sands volume;
[0042] (c) Utilize filter centrifuge to remove large particle size solid phases such as large particle size quartz sand in the suspension;
[0043] (d) the liquid phase separated by the filter centrifuge is adjusted to 4 with sulfuric acid;
[0044] (e) adding ferrous sulfate powder in the acidic suspension makes the concentration of ferrous su...
Embodiment 3
[0050] In terms of mass ratio, the oil content of oil sand samples is 15%w / w, the water content is 5%w / w, and the sediment or mechanical impurities are 80%w / w
[0051] (a) adding mineral spirits accounting for 11% by volume to the oil sands and fully stirring and aging;
[0052] (b) Add water and emulsifier to the oil sand after treatment, and fully emulsify and disperse to become a suspension with water as the dispersed phase; the volume of water added is 10 times the volume of oil sand after treatment; the emulsifier is washing powder, and the addition amount accounts for 0.5% by volume of treated oil sands;
[0053] (c) adding sulfuric acid in the suspension to adjust its pH value to 5;
[0054] (d) adding ferrous sulfate powder in the acidic suspension makes the concentration of ferrous sulfate in the suspension be 4 grams per liter, and stir evenly;
[0055] (e) Add hydrogen peroxide to the uniformly stirred acid suspension to make the concentration of hydrogen peroxide...
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