Mineral oils: processes and products – Refining – Sulfur removal
Patent
1992-05-15
1993-12-21
Morris, Theodore
Mineral oils: processes and products
Refining
Sulfur removal
208203, 208229, 208236, 208250, 208301, 208305, 210674, 585823, 585824, C10G 1902, C10G 2505, C10G 2512
Patent
active
052718352
ABSTRACT:
A process is disclosed for improving catalyst performance and yields in the manufacture of motor gasoline components. More particularly the process is directed to the removal of H.sub.2 S, sulfur compounds, trace amounts of acetonitrile or acetone or propionitrile from a hydrocarbon feedstock, comprising a C.sub.3 -C.sub.5 product fraction from a fluid catalytic cracking unit which may be used subsequently in an etherification process for the production of ethers such as MTBE and TAME and/or an alkylation process for the production of alkylate. The hydrocarbon feedstock is passed to an amine treating zone, a mercaptan sulfur removal zone and an adsorption zone for the removal of sulfur compounds, water and trace amounts of acetonitrile or acetone or propionitrile. The regeneration of the adsorption zone includes the contacting of the sorbent with a heated regenerant vapor stream. The spent regenerant vapor stream is condensed to provide a hydrocarbon phase and an aqueous phase. The trace amounts of the acetonitrile, acetone, and propionitrile are removed in the aqueous phase. The hydrocarbon phase is treated to remove sulfur compounds and can be recycled as the regenerant.
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Gorawara Jayant K.
Markovs John
Rastelli Henry
Griffin Walter D.
McBride Thomas K.
Morris Theodore
Silverman Richard P.
Tolomei John G.
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