Coking crude benzene hydrodesulfurization process

• Main Author: ZHU ZHONGLIANG
• Format: Patent
• Language: Chinese; English
• Published: 04.01.2017
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; 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; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; 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; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a coking crude benzene hydrodesulfurization process. The coking crude benzene hydrodesulfurization process includes: a mixture of coking crude benzene and hydrogen enters a pre-reactor from a tower top, wherein the pre-reactor is filled with an NiMo catalyst, the reaction temperature is 220-230 DEG C, and the hydrogenation pressure is 3.2-3.8MPa; pre-reaction products enter a fixed bed reactor, wherein the fixed bed reactor is filled with a hydrodesulfurization catalyst which comprises a carrier and an active component, the carrier is KIT-1 with heteroatom Co<2+> doped in a synthesis framework structure, the active component refers to a mixture of MO2N, W2N, Mo2C and WC, and reaction conditions of the fixed bed reactor include that the reaction temperature is 320-380 DEG C, the hydrogen pressure is 3.0-3.6MPa, an hydrogen-oil volume ratio is 500-800, and a volumetric space velocity is 1.5-2h<-1>; products obtained after fixed bed hydrogenation reaction enter an extractive distillation