Liquid-liquid extraction process

Details Liquid-liquid extraction process Liquid-liquid extraction process

1976-10-29

1978-03-28

Crasanakis, George

Mineral oils: processes and products

Refining

Sulfur removal

208206, 208230, 208325, 260608, 260676R, C10G 1908, C10G 2702, C10G 2928, C07C14912

Patent

active

040813541

ABSTRACT:
High efficiency in liquid-liquid 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.

REFERENCES:
patent: 2258279 (1941-10-01), Caselli et al.
patent: 2367671 (1945-01-01), Dickinson et al.
patent: 2921020 (1960-01-01), Urban et al.
patent: 3661773 (1972-05-01), Zuiderweg et al.

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