Mineral oils: apparatus – Solvent extraction
Patent
1975-11-03
1977-08-02
Wolk, Morris O.
Mineral oils: apparatus
Solvent extraction
196 46, 261114R, 23283, B01D 1104, C10G 1908
Patent
active
040393895
ABSTRACT:
High efficiency in extraction operations, such as extracting mercaptans from hydrocarbons with caustic, is obtained over a wide range of flow rates through a single extraction column by the provision of an intermediate product drawoff means located between a downstream section of extraction trays having greatest efficiency at low throughputs and an upstream section of trays having peak efficiency at high throughputs. A second product stream is removed after passing through the low flow rate trays and is blended with the stream from the intermediate drawoff means.
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Erickson Robert W.
Hoatson Jr. James R.
Marcus Michael S.
Page II William H.
UOP Inc.
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