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Titolo:
DEWATERING OF CRUDE-OIL EMULSIONS .3. EMULSION RESOLUTION BY CHEMICALMEANS
Autore:
MOHAMMED RA; BAILEY AI; LUCKHAM PF; TAYLOR SE;
Indirizzi:
UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,DEPT CHEM ENGN & CHEM TECHNOL,PRINCE CONSORT RD LONDON SW7 2BY ENGLAND UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,DEPT CHEM ENGN & CHEM TECHNOL,PRINCE CONSORT RD LONDON SW7 2BY ENGLAND BP GRP RES & ENGN CTR,SURFACE & COLLOID SCI GRP SUNBURY TW16 7LN MIDDX ENGLAND
Titolo Testata:
Colloids and surfaces. A, Physicochemical and engineering aspects
fascicolo: 3, volume: 83, anno: 1994,
pagine: 261 - 271
SICI:
0927-7757(1994)83:3<261:DOCE.E>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Keywords:
CHEMICAL DEMULSIFICATION; CRUDE OIL EMULSION; DEWATERING; EMULSION RESOLUTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
13
Recensione:
Indirizzi per estratti:
Citazione:
R.A. Mohammed et al., "DEWATERING OF CRUDE-OIL EMULSIONS .3. EMULSION RESOLUTION BY CHEMICALMEANS", Colloids and surfaces. A, Physicochemical and engineering aspects, 83(3), 1994, pp. 261-271

Abstract

In Parts 1 and 2 of this series of papers, the importance of interfacial properties in determining the stability of water-in-Buchan crude oil emulsions has been demonstrated. In this third part of the series, we report on the chemical demulsification of water-in-crude oil emulsions. Two classes of experiment were carried out; bottle tests in whichemulsion resolution was followed by the appearance of a separated aqueous layer in the bottom of the tube, and microscopic examinations, where resolution was directly followed by observing coalescence of the droplets. Demulsification was achieved by adding one of the commercial demulsifiers Unidem120 and BJ18. Unidem120 is a blend of non-ionic andanionic surfactants, whereas BJ18 was specially developed for the demulsification of Buchan crude. Some of the pure constituents of these blended surfactants were also used for resolving water-in-Buchan crude oil emulsions. Two types of behaviour were observed: type I behaviour,showing constant water separation with increased demulsifier concentration, and type II, showing reduced water separation with increased demulsifier concentration. To a small extent, there exists a degree of functional specificity in the demulsifier molecules towards interactionwith the constituents of the interfacial film, and to a larger extentgood emulsion resolution is governed by the interfacial properties ofthe demulsifier blend.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 12:56:25