A kind of hydrocarbon oil desulfurization catalyst containing bea structure molecular sieve and its preparation method and process of hydrocarbon oil desulfurization
A technology of desulfurization catalyst and molecular sieve, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of increasing operating costs and easy wear of catalysts, and achieves reduced operating and application costs and good wear resistance , Improve the effect of wear resistance and service life
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[0033] The present invention also provides a preparation method of the hydrocarbon oil desulfurization catalyst provided by the present invention, the preparation method comprising: a. mixing the sulfur storage metal oxide and / or the sulfur storage metal oxide precursor and the precursor of the inorganic oxide binder , boron nitride, BEA molecular sieve, water and acidic liquid are mixed to obtain carrier slurry; wherein, the pH value of the carrier slurry is 1-5; b, the obtained carrier slurry is successively spray-dried molding, the first drying and the second 1. calcining to obtain a catalyst carrier; c. carrying out the second drying and the second calcining in sequence after introducing the precursor of the metal promoter into the catalyst carrier; optionally d. performing a reduction treatment on the product obtained in step c under a hydrogen-containing atmosphere; A hydrocarbon oil desulfurization catalyst is obtained.
[0034] According to the present invention, the p...
Embodiment approach
[0043] One embodiment, the present invention specifically includes the following scheme:
[0044] 1. a desulfurization catalyst, its composition comprises:
[0045] 1) Sulfur storage metal oxide, wherein the sulfur storage metal is selected from one or more of metals from Group IIB of the Periodic Table of Elements, metals of Group VB of the Periodic Table of Elements and metals of Group VIB of the Periodic Table of Elements, preferably selected from One or more of zinc, cadmium, niobium, tantalum, chromium, molybdenum, tungsten and vanadium, more preferably one or more selected from zinc, molybdenum and vanadium, more preferably zinc;
[0046] 2) Inorganic binder, preferably selected from one or more of heat-resistant inorganic oxides, more preferably selected from one or more of aluminum oxide, silicon oxide, titanium oxide and tin oxide, more preferably selected from One or more of aluminum oxide, titanium oxide and tin oxide;
[0047] 3) The carrier component is boron ni...
Embodiment 1
[0095] Get 2.38kg of titanium tetrachloride (Beijing Chemical Factory, analytically pure, 99% by weight) slowly add 4.6kg of 5% by weight dilute hydrochloric acid, stir slowly to avoid crystallization of titanium oxide, and obtain light yellow transparent titanium sol pH=2.0 ;
[0096] 4.43kg of zinc oxide powder (Headhorse company, purity 99.7% by weight), 0.88kg of Hβ molecular sieve (Sinopec Catalyst Qilu Branch, containing 0.70kg dry basis, SiO 2 : Al 2 O 3 The molar ratio of 8), 2.06kg of hexagonal boron nitride (purity>99.0%, Qinhuangdao Yinuo High-tech Material Development Co., Ltd.) and 6.57kg of deionized water were mixed, and after stirring for 30 minutes, zinc oxide, Hβ molecular sieve and hexagonal boron nitride were obtained. The mixed slurry of boron nitride; then add the above-mentioned titanium sol, and stir for 1 hour after mixing to obtain a carrier slurry with a pH value of 3.5;
[0097] The resulting carrier slurry was used in the Niro Bowen Nozzle Tower...
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