Patent ID: 6324895
Filing Date: 2001-12-04
Classification: C10G,G01N

Abstract:
A method for monitoring the presence of entrained catalyst in a regenerator flue gas stream of a fluidized catalytic cracking unit, comprising the following steps:(a) creating a regenerator gas stream within a regenerator section of a fluidized catalytic cracking unit, said regenerator gas stream comprising entrained catalyst;(b) passing the regenerator gas stream from the regenerator through a separation system to remove at least a portion of the catalyst and to create a cleaner regenerator gas stream;(c) applying suction to the cleaner regenerator gas stream to remove a sample portion therefrom;(d) directing said sample portion of the cleaner regenerator gas stream through an inertial separating device to substantially separate entrained catalyst from the sample portion of the cleaner regenerator gas stream, thereby obtaining a substantially catalyst-free gas stream;(e) collecting separated catalyst from the inertial separating device; and(f) monitoring the efficiency of the separation system by determining the amount of the collected separated catalyst or the particle size of the collected separated catalyst.