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Class Information
Number: 208/412
Name: Mineral oils: processes and products > By treatment of solid mineral, e.g., coal liquefaction, etc. > Plural hydrogenation steps
Description: Subject matter in which a feedstock is subjected to more that one hydrogenation treatment during the process.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7247235 |
Hydrogenation of middle distillate using a counter-current reactor |
Jul. 24, 2007 |
| 7076346 |
Automated continuous haulage system |
Jul. 11, 2006 |
| 6319395 |
Process and apparatus for converting oil shale or tar sands to oil |
Nov. 20, 2001 |
| 5681452 |
Process and apparatus for converting oil shale or tar sands to oil |
Oct. 28, 1997 |
| 5269910 |
Method of coil liquefaction by hydrogenation |
Dec. 14, 1993 |
| 5246570 |
Coal liquefaction process using soluble molybdenum-containing organophosphorodithioate catalyst |
Sep. 21, 1993 |
| 5122260 |
Liquefaction of solid carbonaceous material with catalyst recycle |
Jun. 16, 1992 |
| 5120429 |
Co-processing of carbonaceous solids and petroleum oil |
Jun. 9, 1992 |
| 5110450 |
Coal extract hydroconversion process comprising solvent enhanced carbon monoxide pretreatment |
May. 5, 1992 |
| 5055181 |
Hydropyrolysis-gasification of carbonaceous material |
Oct. 8, 1991 |
| 5026475 |
Coal hydroconversion process comprising solvent extraction (OP-3472) |
Jun. 25, 1991 |
| 5009770 |
Simultaneous upgrading and dedusting of liquid hydrocarbon feedstocks |
Apr. 23, 1991 |
| 4982027 |
Process for the reprocessing of carbon containing wastes |
Jan. 1, 1991 |
| 4946583 |
Process for the liquefaction of coal |
Aug. 7, 1990 |
| 4795841 |
Process for upgrading biomass pyrolyzates |
Jan. 3, 1989 |
| 4741822 |
Procedure for hydrogenation of coal by means of liquid phase and fixed-bed catalyst hydrogenation |
May. 3, 1988 |
| 4740289 |
Process for the hydrogenolysis of a coal liquid bottom |
Apr. 26, 1988 |
| 4714543 |
Method of treating brown coal for liquefaction |
Dec. 22, 1987 |
| 4696735 |
Method and apparatus for multiphase coal hydrogenation reactors with exothermal heat of reaction having gas cooling in sump-phase reactors |
Sep. 29, 1987 |
| 4639310 |
Process for the production of reformer feed and heating oil or diesel oil from coal by liquid-phase hydrogenation and subsequent gas-phase hydrogenation |
Jan. 27, 1987 |
| 4617105 |
Coal liquefaction process using pretreatment with a binary solvent mixture |
Oct. 14, 1986 |
| 4609455 |
Coal liquefaction with preasphaltene recycle |
Sep. 2, 1986 |
| 4605486 |
Coal liquefaction process with increased naphtha yields |
Aug. 12, 1986 |
| 4602992 |
Coal hydrogenation process with integrated refining stage |
Jul. 29, 1986 |
| 4595488 |
Multistage process for the direct liquefaction of coal |
Jun. 17, 1986 |
| RE32120 |
Hydrotreating supercritical solvent extracts in the presence of alkane extractants |
Apr. 22, 1986 |
| 4547282 |
Coal liquefaction and hydrogenation |
Oct. 15, 1985 |
| 4545890 |
Coal liquefaction and hydrogenation |
Oct. 8, 1985 |
| 4536275 |
Integrated two-stage coal liquefaction process |
Aug. 20, 1985 |
| 4522700 |
Coal liquefaction |
Jun. 11, 1985 |
| 4521291 |
Coal extraction |
Jun. 4, 1985 |
| 4519895 |
Process for converting a carbonaceous material to lower paraffinic hydrocarbons and monocyclic aromatic hydrocarbons |
May. 28, 1985 |
| 4510037 |
Hydrogenation process for solid carbonaceous feed materials using thermal countercurrent flow reaction zone |
Apr. 9, 1985 |
| 4510040 |
Coal liquefaction process |
Apr. 9, 1985 |
| 4502940 |
Method for extracting caking coals |
Mar. 5, 1985 |
| 4493763 |
Pretreatment of oil-shale for enhanced arsenic removal |
Jan. 15, 1985 |
| 4491511 |
Two-stage coal liquefaction process |
Jan. 1, 1985 |
| 4485008 |
Liquefaction process |
Nov. 27, 1984 |
| 4472264 |
Process for converting solid carbonaceous materials to methane |
Sep. 18, 1984 |
| 4468314 |
Hydropyrolysis of carbonaceous material |
Aug. 28, 1984 |
| 4464245 |
Method of increasing the oil yield from hydrogenation of coal |
Aug. 7, 1984 |
| 4450066 |
Hydrothermal pretreatment to prevent scale during liquefaction of certain solid carbonaceous materials |
May. 22, 1984 |
| 4447312 |
Process for improving the diesel fuel quality of coal derived liquids |
May. 8, 1984 |
| 4440622 |
Integration of short-contact-time liquefaction and critical solvent deashing with gasification through methanol-to-gasoline |
Apr. 3, 1984 |
| 4414094 |
Solvent refined coal reactor quench system |
Nov. 8, 1983 |
| 4400261 |
Process for coal liquefaction by separation of entrained gases from slurry exiting staged dissolvers |
Aug. 23, 1983 |
| 4375402 |
Pyrolysis process |
Mar. 1, 1983 |
| 4357228 |
Recovery of hydrocarbon values from pyrolytic vapors |
Nov. 2, 1982 |
| 4356077 |
Pyrolysis process |
Oct. 26, 1982 |
| 4338184 |
Coal conversion in the presence of added alkali metal compounds |
Jul. 6, 1982 |
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