Gas separation: processes – Solid sorption – Moving sorbent
Reexamination Certificate
2011-01-11
2011-01-11
Bhat, N. (Department: 1797)
Gas separation: processes
Solid sorption
Moving sorbent
C422S144000, C422S147000, C208S04800Q, C208S113000, C208S176000, C095S271000
Reexamination Certificate
active
07867321
ABSTRACT:
An improved cyclone system for disengaging solid and gaseous particles in fluid catalytic cracking (FCC) processes with reduced coke formation in disengager vessels, without favoring release of the disengaged catalyst into cyclones in subsequent stages, said system comprising legless cyclones42fitted with external collector pipes43, is described. The collector pipes43optimize the purge of gases coming from the disengager vessel49, reducing the time the hydrocarbons remain inside the disengager vessel49, thus preventing overcracking and subsequent coke formation. Positioning of the external collector pipes43prevents release of the disengaged catalyst into cyclones in subsequent stages. The present invention also relates to a process and device for disengaging solid and gaseous particles in fluid catalytic cracking (FCC) processes, reducing coke formation in disengager vessels and minimizing the release of catalyst into consecutive stages, said process and device being part of the system of the present invention.
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Dubois Aurelio Medina
Freire Paulo Sergio
Fusco José Mozart
Guerra Eduardo Cardoso de Melo
Huziwara Wilson Kenzo
Bhat N.
Petroleo Brasileiro S.A. - Petrobras
Sughrue & Mion, PLLC
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