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Breaking Water‐in‐Bitumen Emulsions using Polyoxyalkylated DETA Demulsifier
Author(s) -
Xu Yuming,
Wu Jiangying,
Dabros Tadek,
Hamza Hassan,
Wang Sanyi,
Bidal Marianne,
Venter Johann,
Tran Tom
Publication year - 2004
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450820423
Subject(s) - demulsifier , dehydration , settling , asphalt , settling time , chromatography , chemistry , materials science , chemical engineering , pulp and paper industry , emulsion , environmental science , composite material , environmental engineering , organic chemistry , engineering , control engineering , biochemistry , step response
Adding demulsifier is currently the most widely used method for breaking water‐in‐oil emulsions. Experimental demulsifiers based on DETA with various PO and EO contents were synthesized and their RSN values were determined. The dehydration efficiency of these demulsifiers was measured in diluted bitumen using both gravitational settling and centrifugation tests. The results indicate that some of the DETA products could perform potentially at least as well or better than the demulsifier currently used in a commercial plant. RSN values are correlated very well with EO and PO numbers. Optimal dehydration efficiency is in the RSN range of 18 to 22, which corresponds to a PO‐to‐EO ratio in the range of 1 to 1.8.