Preparation method of alpha-alumina catalyst carrier

• Main Authors: NIE WENFEI, NIE YUBIN
• Format: Patent
• Language: Chinese; English
• Published: 22.05.2020
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a preparation method of an alpha-alumina catalyst carrier, and aims to solve the problems of insufficient purity and strength of a finished product in conventional preparationmethods. The preparation method comprises the following specific steps: 1, adding rho-aluminum oxide, pseudo-boehmite and gamma-aluminum oxide into a mixer according to a weight ratio of (5-7): (2-4):1, adding a pore-enlarging agent the weight of which accounts for 1%-5% of the total weight, uniformly mixing, and then adding the mixture into a granulator for granulation; 2, spraying a binder intothe granulator, and continuously granulating to obtain granules; and 3, drying the granules in a drying oven, taking the granules out, and roasting the granules, with the temperature during roastingincreasing from room temperature to 1210-1305 DEG C at a heating rate of 0.9-1.6 DEG C/min, performing heat preservation for 10 h, and then cooling to obtain a finished product. The method has the advantages of simple production