B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/349
B01D 53/34 (2006.01) B01D 47/10 (2006.01) B01D 53/50 (2006.01)
Patent
CA 1236681
Abstract of the Disclosure A process for removing catalyst fines and more that 99% of sulfur oxides in the regenerator effluent gas of a fluid catalytic cracking system which comprises contacting within a venturi structure a gaseous effluent containing sulfur oxides with a liquid scrubbing mixture; passing the admixture of said gaseous effluent and liquid scrubbing mixture through a constricted passage of the venturi structure to increase the velocity thereof; separating the admixture into a liquid portion and a gas portion; delivering the gas portion of the separation step to a packed tower beneath the packed section thereof; contacting the gas portion with liquid scrubbing mixture in the packed section of the tower to form a gaseous overhead effluent substantially free of sulfur oxides and a bottoms liquid; combining the bottom liquid from the packed section of the tower with the liquid portion from the separating step to form a combined liquid bottoms; adjusting the pH of the combined liquid bottoms with a basic solution to form a liquid scrubbing mixture; and dividing the liquid scrubbing mixture into a tower bottoms products, a first recycle stream providing the liquid scrubbing mixture to the venturi structure, and a second recycle stream providing the liquid scrubbing mixture to the packed tower.
497902
Koch Refining Company
Smart & Biggar
LandOfFree
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