TITLE: Modified Sedimentation-Dispersion Model for Solids Behavior in Coal Liquefaction Reactors.

AUTHOR: D. N. Smith;   J. A. Ruether;   G. J. Stiegel;   Y. T. Shah.

INST.  AUTHOR: Department of Energy, Pittsburgh, PA. Pittsburgh Energy Technology Center.

SPONSOR: Pittsburgh Univ., PA. Dept. of Chemical and Petroleum Engineering.*Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  1984,  17p.

NTIS ORDER NO.: DE85013465/INW

NOTES: AIChE annual meeting, San Francisco, CA, USA, 25 Nov 1984.

ABSTRACT:

A modified sedimentation-dispersion model for solid phase behavior in a three-phase slurry reactor is presented. The model incorporates a mass balance of solids that is described by solids dispersion, hindered settling and convection transport. The modified sedimentation-dispersion model incorporates boundary conditions that provide for a closed form solution of the axial solids distribution as a function of hindered settling and solids dispersion and can account for the spatial distribution of particle size and concentration in polydispersed systems.  The application of the model to indirect coal liquefaction processes is briefly discussed. 6 refs., 5 figs. (ERA citation 10:033119)

REPORT  NUMBER: CONF-841121-19