TITLE: Gas/Slurry Flow in Coal-Liquefaction Processes (Fluid Dynamics in 3-Phase Flow Column)

AUTHOR: D. H. S. Ying;   R. Sivasubramanian;   E. N. Givens.

INST.  AUTHOR: Air Products and Chemicals, Inc., Allentown, PA.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  May 80,  71p.

ABSTRACT:

This work is a continuation of studies on the fluid dynamics of 3-phase flow to support the design of the 6000 T/D dissolver for the SRC-I demonstration plant. This plant will employ vertical tubular reactors feeding slurry and gas concurrently upward through these vessels. This reactor is essentially an empty vessel with only a distributor plate located near the inlet. Because the commercial plant represents a considerable scale-up, this program is addressing the need for additional data on behavior of three phase systems in large vessels. Parameters are being studied at conditions that relate directly to the projected demonstration plant operating conditions. The results show that the liquid axial dispersion coefficient was independent of liquid velocity regardless of the presence of solids, the solids concentration and their particle size. Increasing gas velocity, however, increased the liquid dispersion coefficient in all conditions. All the results clearly indicated a decrease in liquid dispersion coefficient as well as liquid backmixing in the presence of solid particles. The predicted axial dispersion coefficients from this correlation agree reasonably well with our experimental values for the air/water system. (ERA citation 06:016352)

CONTRACT  NUMBER: AC01-79ET14801