PSRI Consulting

PSRI has over 160 years of experience and over 225 reviewed publications in fluidization and particle technology
Consulting Results Coal combustion & gasification

Coal Combustion and Gasification

  • Pioneered the development of nonmechanical devices for solids flow (L-valves and loop seals) which are used in these processes
  • Investigated the effects of high pressure and high temperature on bed hydrodynamics for these processes
  • Developed a novel dipleg configuration to prevent blockage of secondary cyclone diplegs by discharging the first stage cyclone dipleg into the second stage cyclone dipleg
  • Demonstrated world’s tallest fluidizedbed operation for catalytic coal gasification at high pressures.
  • Help develop moving bed looping technology for coal gasification with emphasis hydrogen production
  • J.W. Chew, R. Hays, J.G. Findlay, T.M. Knowlton, S.B.R. Karri, R.A. Cocco, et al., Cluster characteristics of Geldart Group B particles in a pilot-scale CFB riser. I. Monodisperse systems, Chemical Engineering Science. 68 (2012) 72–81.
  • J.W. Chew, D.M. Parker, R.A. Cocco, C.M. Hrenya, Cluster characteristics of continuous size distributions and binary mixtures of Group B particles in dilute riser flow, Chemical Engineering Journal. 178 (2011) 348–358.
  • J.W. Chew, R. Hays, J.G. Findlay, T.M. Knowlton, S.B.R. Karri, R.A. Cocco, et al., Impact of material property and operating conditions on mass flux profiles of monodisperse and polydisperse Group B particles in a CFB riser, 214 (2011) 89–98.
  • T. Knowlton, S. Karri, J. Smith, Hydrodynamic Scale-Up of Circulating Fluidized Beds, Fluidization XII. 12 (2007) 1–16.
  • W. Yang, T. Knowlton, L-valve equations, Powder Technology. 77 (1993) 49–54.

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