Method of removing benzene from petroleum desalter brine

Patent · Tue Aug 17 00:00:00 EDT 1993

OSTI ID:6163023

Hart, P R

A method is described for removing benzene from petroleum refinery desalter effluent brine containing dispersed oil, solids, oily solids and benzene comprising contacting the brine with a sufficient amount for the purpose of flocculating oily solids of a combination of a aluminum chlorohydrate and a water soluble cationic polymer selected from the group consisting of polyamines and dialkyldiallylammonium polymers, in a ratio of from 1:10 to 100:1 at a temperature of about 250 F, separating the resulting floc from the brine; and thereafter contacting the brine with a sufficient amount for the purpose of reducing benzene levels in the brine of an oil solvent in combination with a demulsifier.

• Assignee: Betz Labs., Inc., Trevose, PA (United States)
• Patent Number(s): US 5236591; A
• Application Number: PPN: US 7-843747
• OSTI ID: 6163023
• Resource Relation: Patent File Date: 28 Feb 1992
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
BENZENE
REMOVAL
PETROLEUM REFINERIES
WATER TREATMENT
ALUMINIUM COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BRINES
CHLORINE COMPOUNDS
DEMULSIFIERS
FLOCCULATION
HYDRATES
OILS
PARTICULATES
POLYMERS
ADDITIVES
AROMATICS
HALOGEN COMPOUNDS
HYDROCARBONS
INDUSTRIAL PLANTS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARTICLES
PRECIPITATION
SEPARATION PROCESSES
020800* - Petroleum- Waste Management