Process for the removal of hydrocarbonaceous compounds from an aqueous stream and hydrogenating these compounds

Patent · Tue Jul 19 04:00:00 EDT 1988

OSTI ID:6779461

Johnson, R W

A process for the removal of trace quantities of hydrocarbonaceous compounds from an aqueous stream is described 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.

• Assignee: UOP Inc., Des Plaines, IL
• Patent Number(s): US 4758346
• OSTI ID: 6779461
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION
ADSORBENTS
ADSORPTION
AQUEOUS SOLUTIONS
CHEMICAL REACTIONS
DISPERSIONS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGENATION
LIQUID WASTES
MANAGEMENT
MIXTURES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PROCESSING
REMOVAL
SCRUBBING
SEPARATION PROCESSES
SOLUTIONS
SOLVENTS
SORPTION
TRACE AMOUNTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER
WATER TREATMENT