초록 ▼

Hydrocarbon feedstocks containing relatively high levels of nitrogen contaminants are converted by catalytic cracking to products of lower average molecular weight by contacting the feedstock with a mixture of a cracking catalyst and separate particles of a nitrogen scavenger comprising microporous

Hydrocarbon feedstocks containing relatively high levels of nitrogen contaminants are converted by catalytic cracking to products of lower average molecular weight by contacting the feedstock with a mixture of a cracking catalyst and separate particles of a nitrogen scavenger comprising microporous solids selected from the group consisting of acid clays; hydrogen or ammonium exchanged mordenite, clinoptilolite, chabazite and erionite; mineral acids or mineral acid precursors supported on an inorganic, refractory oxide; and Catapal alumina.

대표청구항 ▼

A process for the catalytic cracking of a nitrogen-containing hydrocarbon feedstock which comprises contacting said feedstock in the vapor phase, without first treating said feedstock to remove at least a portion of said nitrogen compounds, with a mixture of a regenerated cracking catalyst and separ

A process for the catalytic cracking of a nitrogen-containing hydrocarbon feedstock which comprises contacting said feedstock in the vapor phase, without first treating said feedstock to remove at least a portion of said nitrogen compounds, with a mixture of a regenerated cracking catalyst and separate particles of a nitrogen scavenger under cracking conditions in the substantial absence of added molecular hydrogen in a cracking zone to convert components of said feedstock into lower molecular weight constituents, wherein said regenerated cracking catalyst comprises a molecular sieve having cracking activity dispersed in a matrix and said separate particles of said nitrogen scavenger comprise a mineral acid or a mineral acid precursor supported on an inorganic refractory oxide component.