Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Gas or vapor treating
Patent
1988-01-19
1989-06-20
McFarlane, Anthony
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Gas or vapor treating
208 78, 208113, 208160, 208164, 585301, 585666, 585910, B01J 3830, C10G 1118, C07C 5333
Patent
active
048409286
ABSTRACT:
Lower alkanes are converted to olefins in a `third bed` external catalyst cooler (ECC) in which hot catalyst, from the regenerator (`second bed`) operating in conjunction with a fluid catalytic cracker (`first bed`), thermally cracks and dehydrogenates the alkanes. Because this is an endothermic reaction, the catalyst is autogeneously cooled before it is recirculated to the FCC regenerator. The cracking catalyst is the catalyst of choice in the FCC reactor. The most evident benefit of using the ECC is that it eliminates internal regenerator coils for steam regeneration. Among several additional benefits is that the ECC allows flexibility in design of its fluid `third bed` for optimum weight hourly space velocity (WHSV), and control of the dehydrogenation temperature so as to get maximum conversion of alkanes. This conversion can be maintained because the FCC regenerator burns the coke made during alkane dehydrogenation. The ECC also permits control of the temperature at which the FCC regenerator operates so as to facilitate processing heavier than conventionally used feedstock in the FCC unit resulting in better earnings.
REFERENCES:
patent: 2397352 (1946-03-01), Hemminger
patent: 2772217 (1956-11-01), Nicholson
patent: 2784826 (1957-03-01), Drews et al.
patent: 3392110 (1968-07-01), Payne
patent: 3894934 (1975-07-01), Owen et al.
patent: 3907663 (1975-09-01), Owen
patent: 4152393 (1979-05-01), Callahan et al.
patent: 4293722 (1981-10-01), Ward et al.
patent: 4404090 (1983-09-01), Castillo et al.
patent: 4422925 (1983-12-01), William et al.
patent: 4551229 (1985-11-01), Pecoraro et al.
patent: 4578366 (1986-03-01), Centinkaya et al.
patent: 4614726 (1986-09-01), Walters et al.
patent: 4640763 (1987-02-01), Chou
patent: 4675461 (1987-06-01), Owen et al.
Harandi Mohsen N.
Owen Hartley
McFarlane Anthony
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
Wise L. G.
LandOfFree
Conversion of alkanes to alkylenes in an external catalyst coole does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Conversion of alkanes to alkylenes in an external catalyst coole, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conversion of alkanes to alkylenes in an external catalyst coole will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-525418