Method and equipment for raising effect of steam stripping at stripping section of catalytic cracking

Abstract

A method for increasing the stripping effect of the stripping segment in catalytic cracking apparatus by adding catalyst delivering tube to increase the temp of stripping segment by 10-40 deg.C features that part of regenerated catalyst is delivered into settling unit via catalyst lifting tube for mixing with the catalyst to be generated from lift-tube reactor and then being delivered into stripping segment, and the rest of regenerated catalyst is directly delivered in the lift-tube reactor for cyclic use.

Description

technical field

[0001] The invention belongs to the field of fluidized catalytic cracking of hydrocarbons, in particular to a method and equipment for improving the stripping effect of a catalytic cracking stripping section. Background technique

[0002] With the development of society and economy, the catalytic cracking process, one of the most effective hydrocarbon conversion processes, is facing urgent requirements for improving economic efficiency and product quality, and achieving greater feed rate and / or conversion rate does not correspond to Increasing too much investment in reformation is one of the key points in the development of catalytic cracking. The biggest bottleneck to a productive revamp to achieve greater feed rates and / or conversions is usually the effective increase in regeneration capacity. Since the improvement of the regeneration capacity of the catalytic device is directly related to the structure and specifications of the front main air system, rege...

Images