Mineral oils: processes and products – Refining – Metal contaminant removal
Patent
1980-02-29
1981-07-21
Tufariello, T. M.
Mineral oils: processes and products
Refining
Metal contaminant removal
208301, 208349, C10G 2904, C10G 2500, C10G 700
Patent
active
042797381
ABSTRACT:
A method of recovering petroleum products from an interface mixture containing a low boiling gasoline having lead components, a medium boiling aviation fuel, and a high boiling residual petroleum product comprising the steps of preheating a fluid stream containing the interface mixture, introducing the fluid stream into a first fractionation tower operating at a first temperature below the degrading point of the lead components and below the initial boiling point of the aviation fuel; recovering the majority of the gasoline and a major quantity of the lead components as a first overhead product stream from the first tower, recovering a minor fraction of the gasoline along with a minor quantity of the lead components; in addition to the aviation fuel and the residual petroleum product, as a first bottoms stream from the first tower; introducing the bottoms stream into a bottom-fed reactor vessel having a catalyst bed containing a catalyst capable of chemically adsorbing the lead components while the first bottoms stream is liquid; withdrawing a second overhead stream from the top of the reactor vessel and heating the same to a second temperature near the initial boiling point of the aviation fuel; and introducing the heated second overhead stream into a second fractionation tower wherein the remaining gasoline and a small fraction of the aviation fuel are carried off as overhead products, recovering the residual petroleum product as a second bottoms stream, and recovering the remaining fraction of aviation fuel as an intermediate side stream.
REFERENCES:
patent: 2897131 (1959-07-01), Berger
patent: 3893912 (1975-07-01), Zimmerman
patent: 3923643 (1975-12-01), Lewis
Dorman William S.
Tufariello T. M.
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