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

A method for treating, sorting and recycling an oil-containing discharged catalyst, wherein the method comprises the following steps:

• (A) cyclonic washing and on-line activation of a discharged catalyst:
• asphaltenes, resins and heavy aromatics in the discharged catalyst are subjected to cyclonic washing to achieve on-line activation of the catalyst;
• (B) cyclonic spinning solvent stripping of the catalyst:
• catalyst particles obtained in step (A) are subjected to high-temperature gas cyclonic spinning reinforced stripping using a gas stream to remove a solvent entrained in the catalyst;
• (C) gas stream acceleration sorting of a high activity catalyst:
• high activity catalyst particles are sorted out from the catalyst obtained in step (B) using the gas stream, wherein the high activity catalyst and a low activity catalyst are subject to different net pulsing displacement directions in a pulsing gas flow field of the gas stream;
• (D) cyclonic restriping and particle capture of the high activity catalyst:
• the high activity catalyst particles discharged along with the gas stream after the sorting in step (C) are further subjected to cyclonic spinning reinforced solvent stripping, while cyclonic capture of the catalyst particles is performed at the same time to recycle the high activity catalyst particles;
• and
• (E) cooling of the gas and condensation removal of the solvent:
• the gas stream from step (D) is cooled after the cyclonic capture, and the entrained solvent is condensed, so as to obtain a pure gas for circulation.