Mineral oils: processes and products – Fractionation – Liquid extraction with solvents
Patent
1984-07-23
1985-10-08
Gantz, D. E.
Mineral oils: processes and products
Fractionation
Liquid extraction with solvents
208321, 203 3, 196132, C10G 2130
Patent
active
045458944
ABSTRACT:
In an aromatic extraction process, the flow rate of aromatics to the extraction column is utilized to control the downstream stripping column so as to maintain a desired purity of the aromatic extract stream withdrawn from the stripping column. Also, the flow rate of solvent to the extraction column is manipulated so as to maintain a desired aromatic concentration in the raffinate stream withdrawn from the extraction column. This control, together with other interactive control functions, results in a control of the aromatic extraction process which substantially maximizes the profitability of the extraction process.
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Blaesi John E.
Stewart William S.
Caldarola Glenn A.
Gantz D. E.
Phillips Petroleum Company
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