Demetalization reactivation method of waste catalytic cracking catalyst

Abstract

The invention relates to the field of waste catalyst treatment, and discloses a demetalization reactivation method of a waste catalytic cracking catalyst, wherein the method comprises: making a wastecatalytic cracking catalyst contact an acid solution, carrying out ultrasonic treatment, carrying out solid-liquid separation, washing the solid phase obtained by the solid-liquid separation, and drying to obtain the reactivated catalytic cracking catalyst. According to the invention, the reactivation method is high in metal removal rate, high in micro-reactivity of the obtained reactivated catalyst, and simple and convenient to operate.

Description

technical field

[0001] The invention relates to the field of waste catalyst treatment, in particular to a demetallization and revival method for waste catalytic cracking catalysts. Background technique

[0002] In recent years, the general heavy and poor quality of crude oil has made residual oil catalytic cracking more and more important in the oil refining industry. The heavy metals in residual oil, such as Fe, Ni and V, contain high levels of harmful substances, which are reacted in the riser of the catalytic cracking unit. The catalyst will be continuously deposited on the surface of the catalyst, which will reduce the activity and selectivity of the catalyst and deactivate it. In order to maintain a high conversion rate and selectivity of the heavy oil catalytic cracking unit, the refinery generally adopts the method of unloading the spent catalytic cracking catalyst and replenishing the fresh agent way. At present, spent catalytic cracking catalyst (FCC catalyst) has ...

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