# US 4,399,024 A · Method for treating petroleum heavy oil > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,399,024 A - Document ID: US4399024A - Status: Granted - Kind: A - Application number: 06/233,043 - Filed: 1981-02-10 - Granted: 1983-08-16 - Earliest claimed: 1980-11-27 - Assignees: Daikyo Oil Company Ltd. - Inventors: Yukimasa Fukui; Heihachiro Mukaida; Masato Inden - Web page: https://patentgrep.com/patent/US4399024A ## CPC - C10G 11/00: Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils (cracking in direct contact with molten metals or salts C10G9/34) - C10B 55/00: Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material (cracking oils C10G) - C10B 57/06: containing additives - C10G 9/005: {Coking (in order to produce liquid products mainly)} - 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 - C10B: DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS (cracking oils C10G; underground gasification of minerals E21B43/295) ## Abstract A method is provided for producing cracked oil with a higher yield and coke having a higher fixed carbon content from petroleum heavy oil or tar sand bitumen or crude shale oil in a short time. This method is characterized by subjecting a petroleum heavy oil or tar sand bitumen or crude shale oil to heat treatment together with at least one additive selected from the group consisting of metal salts of dialkyldithiocarbamic acids, diaryldithiocarbamic acids, alkylxanthogenic acids, arylxanthogenic acids, dialkyldithiophosphoric acids, diaryldithiophosphoric acids, organic phosphoric acid esters, benzothiazoles and disulfides. ## Claims ### Claim 1 A method for producing cracked oil and homogeneous coke of higher fixed carbon with a higher yield by treating petroleum heavy oil selected from the group consisting of atmospheric residue, vacuum residue, thermally-cracked residue, catalytically cracked residue, solvent deasphalted residue, tar sand bitumen and crude shale oil, which comprises subjecting said petroleum heavy oil to heat treatment at a temperature of 400.degree.-550.degree. C. by continuously feeding an additive selected from the group consisting of zinc, nickel, tin, lead, cadmium, tungsten and molybdenum salts of dialkyldithiocarbamic acid, diaryldithiocarbamic acid, alkylxanthogenic acid and arylxanthogenic acid to said petroleum heavy oil. ### Claim 2 (depends on 1) A method for producing cracked oil and coke by treating petroleum heavy oil according to claim 1 in which feeding of said additive is carried out by injection through an injection nozzle to vapor phase within a coke drum. ### Claim 3 (depends on 1) A method for producing cracked oil and coke by treating petroleum heavy oil according to claim 1 in which feeding of said additive is carried out by injection through an injection nozzle to the liquid phase within a coke drum. ### Claim 4 (depends on 1) A method for producing cracked oil and coke by treating petroleum heavy oil according to claim 1 in which feeding of said additive is carried out together with said petroleum heavy oil. ### Claim 5 (depends on 1) A method for producing cracked oil and coke by treating petroleum heavy oil according to claim 1 in which said additive is used alone. ### Claim 6 (depends on 1) A method for producing cracked oil and coke by treating petroleum heavy oil according to claim 1 in which said additive is used as a mixture of different kinds of additives. ### Claim 7 (depends on 1) A method for producing cracked oil and coke by treating petroleum heavy oil according to claim 1 in which an aryl component of said additive is a phenyl group substituted with a straight or branched alkyl group of 1-18 carbon atoms. ### Claim 8 (depends on 1) A method for producing cracked oil and coke by treating petroleum heavy oil according to claim 1 in which an alkyl component of said additive is straight or branched alkyl group of 1-18 carbon atoms. ### Claim 9 A method for producing cracked oil and homogeneous coke of higher fixed carbon with a higher yield by treating petroleum heavy oil selected from the group consisting of atmospheric residue, a vacuum residue, thermally-cracked residue, catalytically cracked residue, solvent deasphalted residue, tar sand bitumen and crude shale oil, which comprises subjecting said petroleum heavy oil to heat treatment at a temperature of 400.degree.-550.degree. C. by continuously feeding an additive selected from the group consisting of disulfides, benzothiazoles or metal salts thereof, metal salts of alkylxanthogenic acids, metal salts of arylxanthogenic acids, metal salts excluding antimony of dialkyldithiocarbamic acids, metal salts excluding antimony of diaryldithiocarbamic acids, metal salts excluding antimony of dialkyldithiophosphoric acids and metal salts excluding antimony of diaryldithiophosphoric acid to said petroleum heavy oil. ### Claim 10 (depends on 9) A method for producing cracked oil and coke by treating petroleum heavy oil, tar sand bitumen or crude shale oil according to claim 9 in which the metal component of said benzothiazole, alkylxanthogenic acid and arylxanthogenic acid is zinc, sodium, potassium, nickel, antimony, lead, cadmium, molybdenum, tungsten, chromium, manganese, tellurium, bismuth or selenium.