# US 4,397,736 A · Hydrotreating supercritical solvent extracts in the presence of alkane extractants

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- Number: US 4,397,736 A
- Document ID: US4397736A
- Status: Granted
- Kind: A
- Application number: 06/249,804
- Filed: 1981-04-01
- Granted: 1983-08-09
- Earliest claimed: 1981-04-01
- Assignees: Phillips Petroleum Company
- Inventors: Jim Y. Low
- Web page: https://patentgrep.com/patent/US4397736A

## CPC

- C10G 1/002: {in combination with oil conversion- or refining processes}
- B01D 11/0203: {with a supercritical fluid}
- C10G 1/04: by extraction
- Y10S 208/952: Solid feed treatment under supercritical conditions
- C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A process of recovering the hydrocarbon values from low organic carbon content deposits comprises the hydrotreating of hydrocarbons from those deposits in the presence of supercritical alkane-containing solv

## Claims

### Claim 1

A process for recovering hydrocarbons from naturally-occurring low organic carbon content carbonaceous material selected from oil shale, tar sand, and mixtures thereof comprising the step of contacting said material under supercritical conditions with an added mixture of structurally analogous hydrocarbon solvents wherein at least one solvent is aromatic, at least one solvent is cycloaliphatic and is structurally analogous to the aromatic solvent, and wherein the cycloaliphatic solvent is present in an amount of 2-10% by weight based on the total solvent weight.

### Claim 2 (depends on 1)

The process of claim 1 wherein the cycloaliphatic solvent is present in an amount of 5 to 10% by weight based on the total solvent weight.

### Claim 3 (depends on 1, 2)

The process of claims 1 or 2 wherein the aromatic solvent is toluene or benzene and the structurally analogous cycloaliphatic solvent is methylcyclohexane or cyclohexane.

### Claim 4 (depends on 1, 2)

The process of claims 1 or 2 further comprising the steps of hydrotreating the material in the presence of the solvent mixture and recovering the resultant hydrotreated product.

### Claim 5 (depends on 4)

The process of claim 4 wherein the solvent mixture comprises toluene and methylcyclohexane.