Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural parallel stages of chemical conversion
Patent
1980-09-08
1982-01-05
Gantz, Delbert E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural parallel stages of chemical conversion
208113, 208120, C10G 1118
Patent
active
043092730
ABSTRACT:
Cracking catalyst fines that are separated from the cracked fluid leaving the cracking or separation zone of a catalytic cracker are not dropped back into the separation zone or cracker and thus are not left in the cracker-regenerator loop but rather are removed from this loop, e.g., by connecting the dip-leg of one or more of the cyclones in the cracker with a conduit guiding these fines to a location of disposal outside of the catalyst loop. In one embodiment, these fines are introduced into another catalytic cracker or the separation vessel associated with a further catalytic cracker so that these fines ultimately occur in the bottoms product from a fractionator associated with this further cracker. By this process, the bottoms product of the main fractionator associated with the main cracker can be more efficiently utilized for the production of a carbon black feedstock because this bottoms product contains a very significantly reduced quantity of catalyst fines.
REFERENCES:
patent: 2349575 (1944-05-01), Voorhees
patent: 2767126 (1956-10-01), Rice
patent: 2794710 (1957-06-01), Lawson
patent: 3758400 (1973-07-01), Hampton
patent: 3904509 (1975-09-01), Anthoney
patent: 4148712 (1979-04-01), Nielsen et al.
patent: 4222856 (1980-09-01), Hansel et al.
Gantz Delbert E.
Phillips Petroleum Company
Schmitkons G. E.
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