Process for the removal of hydrocarbonaceous compounds from an a

Details Process for the removal of hydrocarbonaceous compounds from an a Process for the removal of hydrocarbonaceous compounds from an a

1986-10-20

1988-07-19

Cintins, Ivars

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210674, 210691, 210694, 210757, 210908, 210909, C02F 128

Patent

active

047583460

ABSTRACT:
A process for the removal of trace quantities of hydrocarbonaceous compounds from an aqueous stream which comprises the steps of: (a) contacting the aqueous stream with an adsorbent to remove trace quantities of hydrocarbonaceous compounds from the aqueous stream to provide an aqueous stream having a reduced concentration of hydrocarbonaceous compounds; (b) contacting spent adsorbent which has accumulated the hydrocarbonaceous compounds from the aqueous stream with an elution solvent to remove the hydrocarbonaceous compounds from the spent adsorbent thereby regenerating the adsorbent; (c) contacting the elution solvent in admixture with the hydrocarbonaceous compounds which were removed from the spent adsorbent in step (b) in the presence of hydrogen with a hydrogenation catalyst in a hydrotreating reaction zone; (d) contacting the hydrotreating reaction zone effluent with an aqueous scrubbing solution; and (e) introducing a resulting admixture of the reaction zone effluent and the aqueous scrubbing solution into a separation zone to provide a hydrotreated elution solvent and a spent aqueous stream.

REFERENCES:
patent: 3595931 (1971-07-01), Hay et al.
patent: 4201665 (1980-05-01), Savage et al.
patent: 4568447 (1986-02-01), Pujado et al.
Kirk Othmer, Encyclopedia of Chemical Technology, Third Edition, vol. 12, p. 999.

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