Mineral oils: processes and products – Chemical conversion of hydrocarbons – With preliminary treatment of feed
Patent
1986-09-03
1988-06-07
Sneed, Helen M. S.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
With preliminary treatment of feed
208113, 208155, 20415715, 2041576, 20415814, 219 1057, C10G 5502
Patent
active
047494700
ABSTRACT:
A fluid catalytic cracking (FCC) process and apparatus which exposes a residuum to microwave energy to activate the residuum prior to feeding to a fluid catalytic cracking riser. The process and apparatus also cracks a portion of a light hydrocarbon stream to produce reactive free radical and olefinic compounds by contacting the light hydrocarbon stream with a fluid catalytic cracking stream in the riser. The catalyst and activated light hydrocarbon stream then combines with the microwave-activated residuum in the riser. The present invention may be employed in a multiple riser system or in a single riser system. The present invention minimizes coke production by quickly and uniformly heating residuum in the microwave heater prior to passing into the riser. The present invention further minimizes coke production by combining the residuum with the catalyst and light hydrocarbons in the riser for, preferably, less than about 1 second, prior to separating the hydrocarbons from the catalyst in the multiple riser system, or prior to diluting the residuum with vacuum gas oil, additional catalyst and recycled heavy cycle oil in the single riser system.
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Herbst Joseph A.
Owen Hartley
Schipper Paul H.
Gilman Michael G.
McFarlane Anthony
McKillop Alexander J.
Mobil Oil Corporation
Schneller Marina V.
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