# US 4,391,701 A · Process for upgrading heavy oils > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,391,701 A - Document ID: US4391701A - Status: Granted - Kind: A - Application number: 06/252,675 - Filed: 1981-04-09 - Granted: 1983-07-05 - Earliest claimed: 1980-04-09 - Assignees: Institut Francais du Petrole - Inventors: Jean-Francois Le Page; Germain Martino - Web page: https://patentgrep.com/patent/US4391701A ## CPC - C10L 1/1824: {mono-hydroxy} - C07C 29/1518: {one step being the formation of initial mixture of carbon oxides and hydrogen for synthesis} - C07C 29/50: with molecular oxygen only - C10G 57/00: Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one cracking process or refining process and at least one other conversion process - Y10S 208/95: Processing of "fischer-tropsch" crude - Y10T 137/0329: Mixing of plural fluids of diverse characteristics or conditions - C10L: FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS - C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS - 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 - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The viscosity of heavy oils is reduced in order to facilitate pipe line transportation thereof. A fraction of the heavy oil is deasphalted in the presence of C.sub.5 -C.sub.7 hydrocarbons, a portion of the separated asphalt is converted to synthesis gas, at least a portion of said gas is used to manufacture an alcohol mixture including methanol and C.sub.2 to C.sub.10 alcohols, which mixture is admixed with the heavy oil before transportation thereof. This procedure is more beneficial to the transported heavy oil than the prior processes which do not comprise the conversion of the asphalt fraction of the heavy oil. ## Claims ### Claim 1 A process for reducing the viscosity of a heavy oil, comprising the steps of: (a) deasphalting at least a portion of the heavy oil, and separately recovering a deasphalted heavy oil and asphaltenes; (b) gasifying at least a portion of said asphaltenes to produce a synthesis gas; (c) converting at least a portion of said synthesis gas to a mixture of alcohols consisting of methanol and at least one C.sub.2-10 alcohol; and (d) admixing said alcohol mixture with the nondeasphalted heavy oil portion or with the deasphalted heavy oil or with a mixture thereof, to produce an oil of lower viscosity. ### Claim 2 (depends on 1) A process according to claim 1, wherein the heavy oil is at least partly subjected to desalting, dehydration and separation of the solid sediments therefrom before deasphalting of at least a portion thereof. ### Claim 3 (depends on 2) A process according to claim 2 wherein the salt removal is performed by means of a fluxing agent consisting of at least a portion of the deasphalting solvent. ### Claim 4 (depends on 2) A process according to claim 2 wherein the deasphalting solvent consists essentially of a hydrocarbon having 5 carbon atoms per molecule. ### Claim 5 (depends on 2) A process according to claim 2, wherein the mixture of alcohols contains, by weight, about 60 to 85% of methanol. ### Claim 6 (depends on 2) A process according to claim 2, wherein the mixture of alcohols contains, by weight, from 10 to 50% of methanol. ### Claim 7 (depends on 2) A process according to claim 2, wherein the mixture of alcohols contains, by weight, 15 to 40% of methanol. ### Claim 8 (depends on 1) A process according to claim 1, wherein said oil of reduced viscosity contains, by weight, about 5 to 25% of said mixture of alcohols. ### Claim 9 (depends on 1) A process according to claim 1, wherein said heavy oil has a viscosity at 70.degree. C. of close to or higher than 1000 centistokes. ### Claim 10 (depends on 2) A process according to claim 2, step (c) comprising feeding synthesis gas to a first zone for synthesizing: (i) methanol and at least one C.sub.2-10 alcohol or (ii) substantially only at least one C.sub.2-10 alcohol; and then feeding residual synthesis gas from said first zone to a second zone for methanol synthesis, and combining resultant alcohols from said first and second zones to form said alcohol mixture. ### Claim 11 (depends on 9) A process according to claim 9, wherein the resultant oil of lower viscosity is transported through a pipeline. ### Claim 12 (depends on 1) A process according to claim 1, wherein in step (c), the alcohols other than methanol produced from said synthesis gas are C.sub.2-5 alcohols. ### Claim 13 (depends on 2) A process according to claim 2, wherein in step (d), said alcohol mixture is admixed with the deasphalted heavy oil; and wherein said process further comprises conveying the resultant oil of lower viscosity to a refinery; distilling the oil; and separating the fraction distilling below about 110.degree. C. from the remainder of the heavy oil.