Patent EA-003978-B1 (EA)
Title: Separation of tars, oils and inorganic constituents from oil bearing sands or shales
Inventor: DI TULLIO VENANZIO
IPC: C10G1/04
Filed: 1999-08-31
Abstract: 1. Method of separating of bitumen associated to substrate, e.g. oil bearings sands and shales, characterized in that the substrate is treated under pressure 1-3 atm. by mixture, comprising water and at least one of components: - sodium silicate or sodium hydroxide - alkyl and/or dialkylglucol or diglycol and/or dipropyl propylglycol ether - triethylamin and/or diethylmethyl and/or dimethylpyridine and/or methylpyridyl and/or methylpiperidene. at the following content of components, w/%; sodium silicate or hydroxide - 0.5-2.5; alkyl and/or dialkylglucol or diglycol and/or dipropyl propylglycol ether - 10-60; triethylamin and/or diethylmethyl and/or dimethylpyridine and/or methylpyridyl and/or methylpiperidene-up to 10; water - the rest. 2. Method according to claim 1, characterized in that the silicate content and/or sodium hydroxide in mixture is 1-2 w/% 3. Method according to any of claims 1-2, characterized in that the content of alkyl and/or dialkylglucol or diglycol and/or dipropyl propylglycol ether in mixture is w/% 15-25 4. Method according to any of claims 1-3, characterized in that the substrate is treated with mixture with lower critical solution temperature upper than 40 degree C. 5. Method according to any of claims 1-3, characterized in that the substrate is treated with mixture at a temperature of more than 100 degree C, preferably 120-130 degree C. 6. Method according to any of claims 1-3, characterized in that the mixture id administered against the stream at the temperature less than lower critical solution temperature, and the solution is heated while moving through the substrate. 7. Method according to claim 6, characterized in that at the initial stage a low-temperature solvent is used for oil extraction from ore, and then high-temperature phase of solvent is used for oil concentration. 8. Method according to claim 6, characterized in that high-temperature solvent is used for removing of bitumen from the surface of substrate. 9. Method according to any of claims 1-3, characterized in that the substrate is supplied top-down, and mixture in opposite direction, and air is supplied into substrate to provide the raising of asphaltene with low density into the upper part of plenum chamber. 10. Method according to any of claims 1-3, characterized in that the substrate is supplied top-down, and mixture in opposite direction, and air is supplied into substrate to provide the raising of particles of smaller size into the upper part of plenum chamber. 11. Method according to any of claims 1-3, characterized in that the substrate is supplied top-down, and mixture in opposite direction, and air is supplied into substrate to provide the raising of upper liquid phase into the upper part of plenum chamber. 12. Method according to any of claims 1-3, characterized in that the substrate is gradually distributed in the layers of clay, silt and sand with particles of defined size for passing to the following treating. 13. Method according to any of claims 1-3, characterized in that liquid column is formed, consisting of upper layer with lower density, comprising the main part of oils, and lower layer with higher density, comprising inorganic salts, naphthenates and thio-carbonyl compounds. 14. Method according to any of claims 9-13, characterized in that both isolated layers are directed to the following treatment. 15. Method according to any of claims 9-13, characterized in that any of two liquid phases are regenerated by method of azeotropic distillation. 16. Method according to claim 12, characterized in that the solvent and solid particles of lower layer or phase are mechanically treated by centrifugal or double-capturing thickener, and the sand and clay is dried by the method of isotropic distillation of remaining solvent. 17. Method according to any of claims 1-3, characterized in that the method is realized at low temperature for reducing of energy consumption. 18. Method according to any of claims 1-3, characterized in that the method is realized with use of non-flammable solving mixtures. 19. Method according to any of claims 1-3, characterized in that a hydrostatical transporting of solid particles of substrates is implemented at a temperature lower than 0 degree C. 20. Method according to any of claims 1-3, characterized in that the formation of manufacturing water is not done.