Conversion of carbon containing feedstock.
Patents Granted (Contd.) Conversion of carbon containing feedstock (57) Abstract This invention relates toe process for the conversion of carbon containing feedstock to a Squid chemical product parbculartv a Souse) fuel product, wherein carbon dioxide emissions ate minimteed. (56) Documents Cited ; WO 2006/1℮Μ32 At U5 200β/237541 Al US 2003/236313 Al US 7007/124997 Al DATABASE FORM 25 (Χ2) PATENT (19) ΑΡ {«) Patent No ; ΑΡ 3616 (73) Applicants) iiNlMERSHY OP THE WiTWATgRS«Af*>, IGKANNtSBURG, i Jan Smuts (21) Application No s AP/P/2CH2/006283 Avenue, Srasmfcntein, 205β. Johannesburg, South Africa (22) Filing Date; 28,10.2010 (24) Date of Grants (45) Publication : »a0i& {30} Priority Data (72) Inventors (33) Country (31) Ptamber {32} Di$to KAUCHALt Shervaad, Sooth Africa 2Λ 30C^/07SS6 (84) Designated States: (74) Representative M2 Τ2 ADAMS (51) International Classification : C07C (54) Tide This invention relates to a process for the conversion of carbon containing feedstock to a liquid chemical product, particularly a liquid fuel product, wherein carbon dioxide emissions are minimized. CLAIMS 1. A process for producing a liquid chemical or fuel product wherein C02 emissions are minimised, the process including reacting a carbon-containing feedstock in a reaction with an oxygen-containing gas and a co-feed substance which is describable in a C-H-0 ternary phase diagram and which lies in a region bound by CH2-H2O-H2 points on said diagram. 2. The process of claim 1 , in which the reaction occurs in a single vessel, is overall thermally balanced, requires minimal 02, and produces minimal or no C02. 3. The process of claim 2, in which H20 is added as reagent to the reacting carbon- containing feedstock, oxygen-containing gas, and co-feed substance. 4. The process of any of the preceding claims, in which the reaction operate on, or very close to, a boundary line linking CH2 and H20 on the C-H-0 ternary phase diagram. 5. The process of any of claim 4, in which the product is dimethyl ether. 6. The process of claim 4, in which the product is a Fisher-Tropsch fuel. 7. The process of claim 4, in which the product is a Fisher-Tropsch fuel, H20, and unconverted synthesis gas. 8. The process of claim 7, in which the unconverted synthesis gas is combusted in a turbine to generate electricity. 9. The process of claim 5, in which the product is dimethyl ether fuel and unconverted synthesis gas. 10. The process of claim 9, in which the unconverted synthesis gas is combusted in a turbine to generate electricity.
The process of claim 1 , in which multiple reactions occur in multiple vessels, a first vessel being arranged to subject the carbon-containing feedstock, in a first reaction, to a gasification reaction which is thermally balanced. The process of claim 11 , in which H20 is added as reagent to the first reaction. 13. The process of claim 12, in which H20 is recycled from reaction products of a further reaction or reactions occurring in a further vessel or vessels in the process. 14. The process of claim 12 or 13, in which C02 is added as reagent to the first reaction. 15. The process of claim 14, in which C02 is recycled from reaction products of a further reaction or reactions occurring in a further vessel or vessels in the process. 16. The process of any of claims 11 to 15, in which the product is synthesis gas. 17. The process of any of claims 11 to 15, in which the product is C02 & H2 gas. 18. The process of any of claims 1 to 15, in which the product is dimethyl ether. 19. The process of any of claims 11 to 15, in which the product is a Fisher-Tropsch fuel. 20. The process of claim 1 , in which multiple reactions occur in multiple vessels, a primary vessel being arranged to subject the carbon-containing feedstock, in a primary reaction, to an endothermic gasification reaction that thermally balances a further reaction or reactions occurring in a further vessel or vessels and which is/are exothermic so that the overall process for producing a liquid chemical or fuel product is thermally balanced.
21. The process of claim 20, in which the primary reaction is a synthesis gas producing reaction and the further reaction is a desired Fischer-Tropsch fuel producing reaction, said reactions overall being thermally balanced. The process of claim 20, in which the primary reaction is a synthesis gas producing reaction and the further reaction is a dimethyl ether producing reaction, said reactions overall being thermally balanced. The process of claim 20, in which the primary reaction is a synthesis gas producing reaction, the further reaction is a dimethyl ether producing reaction, and the yet further reaction is a desired Fisher-Tropsch fuel producing reaction, said reactions overall being thermally balanced. 24. The process as claimed in any of the preceding claims, in which the carbon- containing feedstock is selected from the group consisting of coal, petroleum refinery residue, biomass and waste. 25. The process as claimed in any of the preceding claims, in which the co-feed substance is methane. 26. The process as claimed in any of claims 1 to 24, in which the co-feed substance is hydrogen gas. 27. The process as claimed in any of the preceding claims, in which the oxygen- containing gas is air or oxygen. 28. A process for producing a liquid chemical or fuel product, substantially as herein described with reference to and as exemplified in any of Examples 1.1 to 1.3, 2.2 to 2.4, and 3.1 to 3.3 of the accompanying Examples.