| 摘要 |
CATALYTIC CRACKING WITH REDUCED EMISSION OF NOXIOUS GASES A cyclic, fluidized catalytic cracking process providing reduced emissions of noxious effluents in regeneration zone flue gases is operated with homogeneous or non-homogeneous, regenerable, fluidized, solid particles which are circulated throughout the catalytic cracking process cycle and which comprise (l) a molecular sieve-type cracking catalyst, comprising a cracking catalyst matrix containing crystalline aluminosilicate distributed throughout said matrix and (2) a metallic reactant which reacts with sulfur oxides to form a metal and sulfurcontaining compound in the solid particles. The method involves the introduction of a compound of the metal or metals in the metallic reactant into the cracking process cycle and incorporating the metallic reactant into the solid particles in situ. |
