Nature and Origin of Foulant on Filters in Coker Gas Oil Hydrotreater Feed Streams

Process changes in a bitumen-upgrading plant resulted in an unexpected fouling problem on the feed filters to hydrotreater units. This work was undertaken to investigate the nature of the foulant and to determine its origin. Samples of foulant were extracted directly from a filter, fractionated, and...

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Bibliographic Details
Published in:Energy & fuels 2008-03, Vol.22 (2), p.742-746
Main Authors: Woods, John R, Kung, Judy, Xu, Zhiming, Kotlyar, Luba S, Sparks, Bryan D, McCracken, Thom, Wu, Xin A
Format: Article
Language:English
Subjects:
Applied sciences
Crude oil, natural gas and petroleum products
Energy
Exact sciences and technology
Fuels
Indexing in process
Processing of crude oil and oils from shales and tar sands. Processes. Equipment. Refinery and treatment units
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Summary:Process changes in a bitumen-upgrading plant resulted in an unexpected fouling problem on the feed filters to hydrotreater units. This work was undertaken to investigate the nature of the foulant and to determine its origin. Samples of foulant were extracted directly from a filter, fractionated, and characterized by a number of complementary techniques. These results were then compared to similar data from various gas oil fractions found in the feed. We concluded that the fouling was caused by oxidation of a nitrogen-rich pyrrole fraction present in gas oils.
ISSN:0887-0624
1520-5029
DOI:10.1021/ef7004354