High-intensity molecular sieve and preparation method thereof

Abstract

The invention relates to a high-intensity molecular sieve and a preparation method thereof. The method comprises the following steps: uniformly mixing molecular sieve material and a binder so as to obtain molecular sieve quality A; adding structure intensifier into the molecular sieve quality A so as to obtain molecular sieve quality B, and then obtaining the high-intensity molecular sieve through forming, drying, roasting and cooling the molecular sieve quality B in sequence. The molecular sieve prepared by using the method provided by the invention not only has excellent mechanical strengthand also is low in abrasion ratio.

Description

technical field [0001] The invention relates to a high-strength molecular sieve and a preparation method thereof, belonging to the technical field of petrochemical industry. Background technique [0002] Molecular sieves are a class of adsorbents and catalysts with a wide range of uses. They are often used in gas separation, dehydration, desulfurization, and acid-catalyzed reaction processes in chemical production processes. Molecular sieves often need to be regenerated during use. For example, molecular sieves used in the pressure swing adsorption process need to be alternately raised and lowered; Charcoal regeneration, etc. All these processes cause more or less damage to the structure of molecular sieves, and the development of high-strength molecular sieves is conducive to prolonging the service life of molecular sieve adsorbents / catalysts, which has important practical significance. [0003] Patent CN1044980C discloses a method for preparing high-strength molecular si...

AI Technical Summary

Problems solved by technology

Although the mechanical strength of the molecular sieve prepared by the latter two methods has been improved to a certain extent, the wear rate of the molecular sieve is relatively high.