SYMPOSIA PAPER Published: 01 January 1987
STP19415S

The Relative Erosivity of Coal-Oil, Coal-Water, and Petroleum Coke-Oil Slurries

Source

The relative erosivity (defined as the ratio of the rate of mass loss from a target specimen tested in one slurry and the rate of mass loss in another slurry) for coal-water, coal-oil, and petroleum coke-oil slurries has been determined using pot testers with a rotating flat-plate specimen of either mild steel or 304 stainless steel with a tip speed of 18.3 m/s. Pittsburgh No. 8 seam coal and Whiting medium sulfur coke, both ground to passing 200 mesh, were used together with high flash distillate fuel oil. Slurry viscosity was measured before and after testing, and surface damage was examined using the scanning electron microscope. The effects of slurry concentration (solids loading), velocity, and target material were noted. Evidence of erosion-corrosion was observed for slurries with added stabilizers and for water-based slurries. The erosivity increased in the order coke-oil, coal-oil, coal-water and with increasing solids loading up to about 50% after which a decrease was observed. Comments on problems of erosivity measurement using pot testers are included.

Author Information

Lee, Y-H
University of Kansas, Lawrence, KS
Clark, HM
University of Kansas, Lawrence, KS
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Details
Developed by Committee: G02
Pages: 47–61
DOI: 10.1520/STP19415S
ISBN-EB: 978-0-8031-5009-6
ISBN-13: 978-0-8031-0941-4