Rheological modifiers for petroleum coke-water slurry

David J. Marchand, Alexander Abrams, Brennan R. Heiser, Yongkwang Kim, Juhoe Kim, Seong H. Kim

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


The rheological properties of petroleum coke-water slurries (PWS) were examined and modified using polyvinyl alcohol (PVA), naphthalene sulfonate (NS), and xanthan gum (XG). PVA and NS were both very effective at reducing the slurry viscosity. Adsorption isotherms showed that PVA and NS must be adsorbed to the particle surface to be effective; the viscosity cannot be reduced further once the particle surface is saturated. Decreasing the slurry viscosity also caused very poor stability against settling due to gravity. Adding XG to PVA-treated slurries gave strong shear-thinning behavior, which allowed for excellent stability. PVA and XG are practical and effective for producing PWS with ideal rheological behaviors.

Original languageEnglish (US)
Pages (from-to)290-298
Number of pages9
JournalFuel processing technology
StatePublished - Apr 2016

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology


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