Removal of carbonyl impurities

Details Removal of carbonyl impurities Removal of carbonyl impurities

1977-06-29

1978-11-14

O'Keefe, Veronica

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 710

Patent

active

041255682

ABSTRACT:
Impurities that are carbonyl-containing organic compounds (e.g., acetaldehyde) are removed from organic hydrocarbons produced in conventional production facilities. The process comprises contacting the hydrocarbon product (e.g., butadiene) with an aqueous "scrubbing solution," containing a water soluble reducing agent (e.g., NaHSO.sub.3) in slightly greater amount than is theoretically required for complete reaction with the carbonyl compounds, in an in-line mixing means and then passing the mixture to a phase separator to separate the layers. The resulting "scrubbed" hydrocarbon product is substantially purified (e.g., to as low as less than 2 ppm carbonyl compounds). An optional second mixer and scrubbing tower are provided as a back-up system in case of surge conditions or maintenance of the first system.

REFERENCES:
patent: 3536775 (1970-10-01), Hutson, Jr. et al.
patent: 3674887 (1972-07-01), Clay
patent: 3682779 (1972-08-01), Ritter et al.
patent: 3804911 (1974-04-01), Liakumovich et al.
patent: 3842137 (1974-10-01), Libers et al.

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