PROCESS FOR PRODUCING JET FUEL FROM A HYDROCARBON SYNTHESIS PRODUCT STREAM

• Main Authors: WATERMEYER DE WET,EWALD, WILLIAMS ,PETA CLAIR, FEDOU,STEPHANE, GAGNIERE,MARIELLE
• Format: Patent
• Language: English
• Published: 29.04.2015
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; CRACKING HYDROCARBON OILS; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; MINERAL WAXES; NATURAL GAS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE

The present invention relates to a process for producing jet fuel comprising the following steps: A.1) separating at least a portion of the C 9 to C 15 fraction from the product of a hydrocarbon synthesis process; A.2) converting at least a part of the separated C 9 to C 15 fraction to aromatic hydrocarbons; A.3) obtaining a jet fuel comprising the, optionally further treated, converted separated C 9 to C 15 fraction of step A.2); B.1) separating at least a portion of the C 16+ fraction from the product of a hydrocarbon synthesis process; B.2) reducing the average number of carbon atoms of at least a portion of the separated C 16+ fraction; B.3) optionally, separating the C 9 to C 15 fraction of at least a portion from the product obtained from step B.2); and B.4) adding - at least a portion of the C 9 to C 15 fraction separated in step B.3), if present; or - at least a portion of the product of step B.2) to - the separated C 9 to C15 fraction obtained from step A.1); and/or - the product of one or more of the steps subsequent of step A.1) before step A.3) is effected; and/or - the steps subsequent of step A.1) before step A.3) is effected and/or - step A.3). The present invention furthermore relates to a product obtainable by the process of the invention. The present invention furthermore relates to the use of at least a portion of the C 9 to C 15 fraction from the product of a hydrocarbon synthesis process wherein at least a part of the fraction has been converted to aromatic hydrocarbons together with at least a portion of the C16+ fraction from the product of a hydrocarbon synthesis process wherein of at least a portion of the C 16+ fraction the average number of carbon atoms has been reduced as jet fuel.