Preparing method of wearing-resistant catalyst

Abstract

The present invention relates to preparation of a wearing-resistant catalyst, which comprises the following steps: (1) preparing slurry which comprises molecular sieve, binding agent, additive and dispersing agent; (2) mixing each component of the slurry to uniform and reducing particle rate through mixing and grinding; and (3) converting the slurry to formed particles through a forming step; and (4) drying or calcining the formed catalyst; wherein LOI (cutting down) value of the catalyst after drying or calcining is smaller than 8. The invention firstly describes a fact that LOI value reduction of the catalyst can reduce catalyst wearing. In the preparation process, the LOI of the catalyst is reduced so that the prepared catalyst has lower wearing rate. The wearing rate of FCC catalyst is reduced from best 2.5% / hr previously to 0.3% / hr.

Description

technical field [0001] The invention belongs to the field of catalysts, in particular to a method for preparing a wear-resistant catalyst. Background technique [0002] Catalysts are essential accelerators for converting crude oil into liquid fuels required for transportation and transportation, domestic fuel oil and petrochemical raw materials, and are also used to convert coal into more valuable products (such as methanol, or gasification of coal into into liquid fuels) and are also used in the process of converting biofuels into chemical feedstocks. Catalytic activity is an important index to measure the quality of a catalytic material, but it is not the only determining factor. In practical applications, other properties of the catalyst such as mechanical strength, morphology, bulk density, dynamic behavior, etc., can also affect the performance of the catalyst. Activity, inactivation, regenerative capacity, etc. [0003] Shaped catalysts comprise at least one active c...

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Problems solved by technology

[0016] In another U.S. Patent US 7,442,664, Zon and Hilgers try to use polyaluminum chloride as a binder to improve the attrition resistance of the FCC catalyst, but the attrition resistance of the prepared catalyst is not very good, and the attrition coefficient (DI) greater than or equal to 6

[0017] However, Raman et al. also proposed another method to improve the anti-attrition performance of FCC catalysts in U.S. Patent No. 7,135,429, that is, to use silica as a binder, but failed to improve the anti-attrition performance of the catalyst.

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