TITLE: Internal R and D Task Summary Report: Large-Scale Dissolver Cold-Flow Modeling.

AUTHOR: S. F. Moujaes.

INST.  AUTHOR: International Coal Refining Co., Allentown, PA.

SPONSOR: Department of Energy, Washington, DC.


PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  Jun 84,  127p.


Cold-flow simulation of the SRC-I dissolvers has been performed on three columns with different height-to-diameter ratios to provide a better understanding of the fluid dynamics and operation of a three-phase gas/liquid/solid system. The experiments were conducted in 5-in.-, 12-in.-, and 6-ft-diameter columns. The effects of various parameters on gas holdup, liquid axial dispersion coefficients, solids axial distribution, and gas/liquid mass-transfer coefficients were investigated. In general, ICRC found that flow conditions such as superficial gas and liquid velocities, physical properties of the liquid such as surface tension and viscosity, and the solids loading and particle size could dramatically affect column performance by affecting gas holdup, axial liquid dispersion, gas/liquid mass-transfer coefficients, and solids distribution. This, in turn, could affect scale-up of the dissolver to demonstration plant size. 11 references, 64 figures, 14 tables. (ERA citation 09:032494)