Index correlates asphaltene stability to coker furnace fouling potential

The coking stability index (CSI) test, which determines the relative stability of coker furnace feedstocks, is more accurate than historical analytical methods that evaluate the stability of petroleum fluids. The correlation of CSI to furnace run lengths provides refiners a better predictive tool to...

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Bibliographic Details
Published in:The Oil & gas journal 2004-09, Vol.102 (34), p.72-74
Main Authors: FALKLER, Thomas J, STARK, Joseph L
Format: Magazinearticle
Language:English
Subjects:
Applied sciences
Chemistry
Coke
Crude oil
Crude oil, natural gas and petroleum products
Energy
Exact sciences and technology
Flocculation
Fouling
Fuels
Heat exchangers
Lasers
Petroleum
Petroleum refineries
Process engineering
Product development
R&D
Raw materials
Refineries
Research & development
Resins
Solvents
Studies
Vacuum distillation
Weights & measures
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Summary:The coking stability index (CSI) test, which determines the relative stability of coker furnace feedstocks, is more accurate than historical analytical methods that evaluate the stability of petroleum fluids. The correlation of CSI to furnace run lengths provides refiners a better predictive tool to determine the fouling potential of a petroleum fluid. This study measured the CSI for three coking furnace feedstocks and found that the stability of asphaltenes in coker feedstocks has a positive correlation with furnace fouling. It established this link by studying the stability of coker feeds using a solvent titration method with a laser-based solids detection system. The work used a near infrared laser to measure the relative stability of the asphaltenes in the feed. The laser indicates the onset of asphaltene fiocculation during titration of the feedstock with a paraffinic solvent.
ISSN:0030-1388
1944-9151