Method and apparatus for treating, sorting and recycling oil-containing discharged catalyst

Abstract

The disclosure relates to a method and an apparatus for treating, sorting and recycling an oil-containing discharged catalyst, and provides a method for treating, sorting and recycling the oil-containing discharged catalyst. The method includes steps of: a) swirl-flow washing and on-line activation of the discharged catalyst; b) swirl-flow auto-rotation gas stripping to a solvent of the catalyst;c) airflow acceleration sorting to a high-activity catalyst; d) swirl-flow gas re-stripping and particle capture to the high-activity catalyst; and e) gas cooling and solvent condensation and removal.The invention also provides the apparatus for treating, sorting and recycling the oil-containing discharged catalyst.

Description

technical field [0001] The disclosure belongs to the field of petrochemical industry and environmental protection, and relates to a method and device for treating and sorting and recycling oil-containing catalyst discharged from a reactor, so as to realize the recovery of the oil phase from the oil-containing catalyst discharged from the reactor and the sorting and recycling of highly active catalysts. use. Specifically, the disclosure relates to a method and device for treating, sorting and recycling oil-containing efflux catalysts. Background technique [0002] 35% of global GDP depends on catalysis, and the consumption of industrial catalysts is as high as 800,000 tons / year, of which about 750,000 tons / year are in oil refining and chemical industry. Global catalyst sales exceeded US$16.3 billion, of which refining and chemicals accounted for US$10.2 billion (62.5%), creating a product market value of more than US$1.63 trillion. The catalyst is deactivated and passivated...

AI Technical Summary

Problems solved by technology

[0013] A technical problem to be solved by the present invention is: the existing oil-containing efflux catalyst has high treatment cost, complex process, easy to form secondary pollution, low recovery efficiency of oil phase, especially difficult to carry out oil droplet carried in the pores of catalyst particles. Efficient separation, resulting in waste of resources; the invention washes the asphaltenes, colloids, and heavy aromatics in the expelled catalyst according to the principle of similar miscibility, and at the same time uses the high-speed rotation of the catalyst particles in the swirl field to strengthen the washing of pollutants in the pores of the catalyst The desorption process renews the surface of the catalyst, strengthens the active site, and realizes the online activation of the catalyst. The process is simple and easy to implement, and the removal efficiency of the oil phase in the pores of the catalyst is high.

[0014] Another technical problem to be solved by the present invention is: the existing oil-containing efflux catalyst treatment process is only limited to catalyst deoiling treatment, and a large number of high-activity catalysts in the efflux catalyst are not sorted and reused, or the sorting efficiency is not high , resulting in a large consumption of fresh catalyst and a large amount of hazardous waste discharged from the device; the present invention is based on the principle of pulsating airflow acceleration sorting, and uses different particle densities of catalysts with high and low activity in the pulsating airflow field to have different accelerations and have different Trajectory and displacement, so as to realize the separation of high and low activity catalysts, with the advantages of high sorting efficiency and sensitivity to small density differences

Images