Preparation method of jet fuel

• Main Authors: XIA GUOFU, ZHANG ZHANZHU, QU HONGLIANG, MENG XIANGKUN, ZHOU JINLIANG
• Format: Patent
• Language: Chinese; English
• Published: 24.04.2013
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CRACKING HYDROCARBON OILS; FUELS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LUBRICANTS; METALLURGY; MINERAL WAXES; 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; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention provides a preparation method of jet fuel. The method comprises the following steps: (1) contacting vegetable oil, and / or animal fat and hydrogen with a hydrodeoxygenation catalyst under the hydrodeoxygenation conditions to obtain C8-C24 n-alkanes; (2) contacting the C8-C24 n-alkanes and hydrogen with a hydroisomerization catalyst under hydroisomerization conditions; and (3) under hydrofining conditions, contacting the contact products from the step (2) and hydrogen with a hydrofining catalyst, and fractioning to obtain the jet fuel. The hydroisomerization catalyst comprises a carrier and an active metal component; the carrier contains a silicon aluminophosphate molecular sieve; and the metal active component contains one or more from VIII metal elements. The jet fuel prepared by the method provided by the invention is almost entirely comprised of saturated alkanes, has stable quality, and can meet the requirements as a No. 3 jet fuel.