Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1998-05-06
2000-08-29
Griffin, Walter D.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
20812001, 585648, 585653, C10G 1100
Patent
active
06110356&
ABSTRACT:
The invention improves a system and apparatus for the recovery of fine solid particles entering the slurry system of a fluidized catalytic contacting process by returning a portion of the recovered solids from the main separator directly back to the reactor stripper. The invention recovers fine particulate material from an FCC main column and returns the particulate material to an FCC stripper to reduce the amount of fine material that continues to recycle through the FCC reactor and product separator. By returning fine particulate material from the FCC product separation zone directly to a low velocity area of the stripping section, the invention breaks the reactor--main column recycle loop that concentrates the fines. Fines entering the reactor stripper will not be carried back into the cyclones for unwanted return to the main column. By the recycling of fines to the stripper via this invention, the fines concentration in the slurry system can decrease by up to 300%.
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Hedrick Brian W.
Lacijan Lawrence A
Schnaith Mark
Griffin Walter D.
McBride Thomas K.
Preisch Nadine
Tolomei John G.
UOP LLC
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