System and method for regenerating reactivating and recovering FCC balance catalyst

Abstract

The invention belongs to the technical field of petrochemical industries, in particular to a regenerative recovery system used to balance catalysts in a fluid catalytic cracker (FCC) and a method for preparing same. The regenerative revived recovery system used to balance catalysts in a fluid catalytic cracker (FCC) of the invention comprises that to-be-processed discarded equilibrium catalysts enter a multi-stage magnetic separator (A) via a material delivery system, sorted low magnetic E-cats enter an acidification demetalization device (B), high magnetic E-cats are unloaded from a sack, serous fluid after being processed by the acidification demetalization device (B) enter an activating device (C), and water and activating agents are added in the serous fluid which is acid-reacted. After a certain time of reaction, the serous fluid is processed to form filter cakes via a filter dehydration device (D) and enter a drier (E). The filter cakes are baked in a rotary baker (F) to be completed products of recovery catalysts which continuously flow out from a revolving furnace, and the recovery catalysts are just sifted and packed. The whole process flow is controlled and displayed by an automatic control device (G).

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, in particular to a regeneration and recovery system and method for an equilibrium catalyst in a fluidized catalytic cracking unit (FCC). Background technique [0002] FCC unit (especially RFCC unit, the so-called heavy oil catalytic cracking unit) is one of the most important secondary processing units in my country's oil refining enterprises. There are more than 150 FCC units in my country, and it is one of the main refining units for gasoline, diesel and liquefied gas. During the production process of the FCC unit, fresh catalyst needs to be supplemented, and spent catalyst (generally called "equilibrium catalyst") is unloaded at the same time. During the catalytic cracking process, metals such as Ni, V, Fe, Cu, etc. in the raw oil are gradually deposited on the catalyst. With the increase of the amount of metal on the catalyst, the activity of the catalyst decreases and the sel...

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Problems solved by technology

[0011] In the above methods, building a pool to bury is not a long-term solution; the amount and use of adsorbents are limited; although magnetic separation can recover some highly active catalyst particles in the balancer, the separation efficiency is not high due to metal migration , the actual application effect is uneven, and the magnetic separation has not fundamentally solved the outlet problem of industrial waste agent

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