Molecular sieve catalyst for preparing olefins from organic oxygen-containing compounds and its preparation method and method for preparing olefins from organic oxygen-containing compounds

Abstract

The invention relates to the field of catalysts for converting organic oxygen-containing compounds to olefins, and discloses a molecular sieve catalyst for preparing organic oxygen-containing compounds to olefins, a preparation method thereof, and a method for preparing organic oxygen-containing compounds to olefins. The preparation method of the olefin molecular sieve catalyst prepared from organic oxygen-containing compounds: mixing the first binder with an acid to make the first binder peptize; mixing the second binder with the obtained first binder sol to prepare Obtain a mixed binder sol; mix the high-silica ZSM-5 molecular sieve, mixed binder sol, and carrier and perform aging treatment; spray-dry, shape and roast the obtained slurry in sequence; obtain an organic oxygen-containing compound converted into an olefin Catalyst; also relates to a molecular sieve catalyst for preparing olefins from organic oxygen-containing compounds and a method for preparing olefins. The catalyst of the invention has excellent activity and service life, is more suitable for fluidized bed reactors, and can significantly improve the selectivity of low-carbon olefins when used in the reaction of organic oxygen-containing compounds to olefins.

Description

technical field [0001] The invention relates to the field of catalysts for converting organic oxygen-containing compounds, such as methanol and / or dimethyl ether, to olefins, especially low-carbon olefins, such as propylene and / or butene, in particular, to a molecular sieve for producing olefins from organic oxygen-containing compounds Catalyst and its preparation method and method for producing olefins from organic oxygen-containing compounds. Background technique [0002] Trienes and triphenyls are important basic raw materials for the modern chemical industry. The existing low-carbon olefin production technology relies heavily on petroleum resources, and the traditional methods for preparing ethylene, propylene, and butene are light oil (naphtha, light diesel oil) cracking technology and refinery by-products. In recent years, the total amount of C4 resources in my country has increased with the development of oil refining, steam cracking to ethylene production capacity a...

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to overcome the defects in the prior art that the selectivity of methanol conversion to propylene and butene is low and the prepared catalyst is not suitable for fluidized bed systems, and to provide a molecular sieve catalyst for the production of olefins from organic oxygen-containing compounds and its Process for the preparation and process of producing olefins from organic oxygenates

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