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Class Information
Number: 208/952
Name: Mineral oils: processes and products > Solid feed treatment under supercritical conditions
Description: Collection of patents in which a solid hydrocarbonaceous mineral of the type of subclasses 390+ or 400+ is treated to remove mineral oil therefrom, or to convert solid materials therein to mineral oil-like mixture by the use, in any step of the treatment, of a treating gas in its supercritical stated. The treating agent may be a liquid, solid or gas at normal conditions, but the treatment conditions must include temperature near the critical temperature of the extractant. Under such conditions, the gaseous agent can not be liquified at any pressure, although the fluid density may be increased significantly by applying sufficient pressure. The agent need not necessarily be a solvent for the hydrocarbonaceous materials at normal conditions. The treatment may be designed to produce any sort of chemical, physical or physico-chemical result.

Patents under this class:
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Patent Number Title Of Patent Date Issued
7947165 Method for extracting and upgrading of heavy and semi-heavy oils and bitumens May. 24, 2011
7909985 Fragmentation of heavy hydrocarbons using an ozone-containing fragmentation fluid Mar. 22, 2011
7008528 Process and system for continuously extracting oil from solid or liquid oil bearing material Mar. 7, 2006
6887369 Pretreatment processes for heavy oil and carbonaceous materials May. 3, 2005
6504068 Method for converting a plastic waste into oil in a stainless steel reactor Jan. 7, 2003
5728910 Oil-forming method of chlorine-containing plastic refuse Mar. 17, 1998
5611915 Process for removal of heteroatoms under reducing conditions in supercritical water Mar. 18, 1997
5481058 Supercritical fluid extraction involving hydrofluoroalkanes Jan. 2, 1996
5011594 Process for the continuous extraction of mixtures of organic substances with supercritical solvents Apr. 30, 1991
4842715 Novel technique for rendering oily sludges environmentally acceptable Jun. 27, 1989
4840725 Conversion of high boiling liquid organic materials to lower boiling materials Jun. 20, 1989
4839030 Coal liquefaction process utilizing coal/CO.sub.2 slurry feedstream Jun. 13, 1989
4737267 Oil shale processing apparatus and method Apr. 12, 1988
4695372 Conditioning of carbonaceous material prior to physical beneficiation Sep. 22, 1987
4675101 Step-wise supercritical extraction of carbonaceous residua Jun. 23, 1987
4664788 Multi-stage coal liquefaction and fractionation method May. 12, 1987
4610777 Coal liquefaction with Mn nodules Sep. 9, 1986
4609455 Coal liquefaction with preasphaltene recycle Sep. 2, 1986
4594141 Conversion of high boiling organic materials to low boiling materials Jun. 10, 1986
RE32120 Hydrotreating supercritical solvent extracts in the presence of alkane extractants Apr. 22, 1986
4541913 Process for hydrocracking supercritical gas extracts of carbonaceous material Sep. 17, 1985
4539094 Extraction of depolymerized carbonaceous material using supercritical ammonia Sep. 3, 1985
4539095 Aqueous alkali depolymerization of coal with a quinone Sep. 3, 1985
4521293 Oil recovery Jun. 4, 1985
4485003 Supercritical extraction and simultaneous catalytic hydrogenation of coal Nov. 27, 1984
4454018 Simultaneous crushing and retorting of oil shale with fluid jets Jun. 12, 1984
4448669 Hydrocarbon recovery from diatomite May. 15, 1984
4447310 Production of distillates by the integration of supercritical extraction and gasification through methanol to gasoline May. 8, 1984
4443321 Supercritical solvent coal extraction Apr. 17, 1984
4441986 Shale retorting with inorganic removal prior to combustion Apr. 10, 1984
4402821 Process for liquefaction of coal Sep. 6, 1983
4397736 Hydrotreating supercritical solvent extracts in the presence of alkane extractants Aug. 9, 1983
4390411 Recovery of hydrocarbon values from low organic carbon content carbonaceous materials via hydrogenation and supercritical extraction Jun. 28, 1983
4388171 Supercritical multicomponent solvent coal extraction Jun. 14, 1983
4376693 Solid liquid extraction Mar. 15, 1983
4374015 Process for the liquefaction of coal Feb. 15, 1983
4341619 Supercritical tar sand extraction Jul. 27, 1982
4334977 Method for the generation of recycle solvents in coal liquefaction Jun. 15, 1982
4251346 Process for coal liquefaction Feb. 17, 1981
4192731 Coal extraction process Mar. 11, 1980
4166022 Recovery of oil from oil shale Aug. 28, 1979
4151068 Process for recovering and upgrading hydrocarbons from oil shale Apr. 24, 1979
4121910 Treating carbonaceous material Oct. 24, 1978
4108760 Extraction of oil shales and tar sands Aug. 22, 1978
4039424 Process for producing fluid fuel from coal Aug. 2, 1977
4036731 Hydrogenation of coal Jul. 19, 1977
4028220 Gas extraction of coal Jun. 7, 1977
4019975 Hydrogenation of coal Apr. 26, 1977
4005005 Process for recovering and upgrading hydrocarbons from tar sands Jan. 25, 1977
4003797 Superatmospheric pressure shale retorting process Jan. 18, 1977

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