Catalyst for preparing olefin by coupling naphtha with low-carbon alcohol ether as well as preparation method and application of catalyst

• Main Authors: ZHANG LING, HAO KUN, HAO SHUNLI, LI GUOQIANG, YIN SHUO, XU ZHI, YANG YONG, GUO YAN, WANG XINJUAN, TAO ZHICHAO, LI YONGWANG
• Format: Patent
• Language: Chinese; English
• Published: 17.06.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; 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; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to a catalyst for preparing olefin by coupling naphtha with low-carbon alcohol ether, and a preparation method and application thereof, the related bifunctional catalyst has a dehydrogenation center and a solid acid center, and the catalyst is prepared from the following raw materials: a waste Fischer-Tropsch synthesis catalyst, a molecular sieve, a matrix, a binder and an optional auxiliary agent. The catalyst can be prepared in a mixing and pulping mode, the waste Fischer-Tropsch synthesis catalyst is recycled, and meanwhile, mesopores are introduced into the bifunctional catalyst to promote mass transfer through removal of components such as carbides, hydrocarbons and oxygen-containing compounds in the waste catalyst during high-temperature roasting; free-state metal and auxiliary components in the waste catalyst are utilized to strengthen interaction of the dehydrogenation component and the molecular sieve, dehydrogenation activation and efficient conversion of naphtha coupling low-c