Mineral oils: processes and products – Fractionation – Liquid extraction with solvents
Patent
1980-11-26
1982-10-12
Gantz, Delbert E.
Mineral oils: processes and products
Fractionation
Liquid extraction with solvents
208325, C10G 2100, C10G 2106, C10G 2128
Patent
active
043537944
ABSTRACT:
A process for the solvent extraction of aromatic hydrocarbons from a mixture thereof with non-aromatic hydrocarbons, and for the recovery of a non-aromatic fraction substantially free of aromatic hydrocarbons, is disclosed. Said mixture is treated with an aromatic-selective solvent in a first extraction zone to provide an aromatic-rich solvent stream and a non-aromatic raffinate stream. The rich solvent stream is treated in a first solvent recovery zone to provide a high purity aromatic stream and a lean solvent stream. One portion of the lean solvent stream is recycled to the first extraction zone, and residual aromatic hydrocarbons are stripped from the remaining portion. This aromatics-free solvent is then utilized to extract residual aromatics from a fraction of the non-aromatic raffinate to provide a high purity paraffin stream.
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Maier William H.
Prabhu K. N. Srinivas
Winter, III George R.
Caldarola Glenn A.
Gantz Delbert E.
Hoatson Jr. James R.
Page II William H.
UOP Inc.
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