Demulsification of bitumen emulsions using polyureas
Patent
·
OSTI ID:5876944
A process for recovering bitumen from oil-in-water (O/w) emulsions is disclosed wherein water soluble demulsifiers are used. These demulsifiers are polyureas of average molecular weight greater than about 5,000 prepared by the reaction between a polyisocyanate and a polyoxyalkylenediamine. To resolve the bituminous petroleum emulsions, the process is carried out between 25/sup 0/ and 160/sup 0/ C wherein the demulsifier of the invention is contacted with the bituminous emulsion.
- Assignee:
- Texaco Canada Resources Inc (Canada); Texaco Inc
- Patent Number(s):
- US 4384951
- OSTI ID:
- 5876944
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
04 OIL SHALES AND TAR SANDS
040402* -- Oil Shales & Tar Sands-- Surface Methods
ADDITIVES
AMIDES
BITUMENS
CARBONIC ACID DERIVATIVES
CHEMICAL PREPARATION
COLLOIDS
DEMULSIFICATION
DEMULSIFIERS
DISPERSIONS
EMULSIONS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
POLYMERS
RECOVERY
SYNTHESIS
TAR
UREA
040402* -- Oil Shales & Tar Sands-- Surface Methods
ADDITIVES
AMIDES
BITUMENS
CARBONIC ACID DERIVATIVES
CHEMICAL PREPARATION
COLLOIDS
DEMULSIFICATION
DEMULSIFIERS
DISPERSIONS
EMULSIONS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
POLYMERS
RECOVERY
SYNTHESIS
TAR
UREA