TITLE: Study of Ebullated-Bed Fluid Dynamics for H-Coal. Quarterly Progress Report No. 10, October 1-December 31, 1982.

AUTHOR: R. J. Schaefer;   D. N. Rundell;   J. K. Shou.

INST.  AUTHOR: Amoco Research Center, Naperville, IL.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  Mar 83,  46p.

ABSTRACT:

The H-Coal ebullated bed reactor contains at least four discrete components: gas, liquid, catalyst, and unconverted coal and ash. Because of the complexity created by these four components, it is desirable to understand the fluid results of prior cold flow model experiments in the operating H-Coal PDU reactor in Trenton, New Jersey. Studies are planned to examine the coalescence behavior of gas bubbles in three-phase ebullated beds. The work is divided into four parts: fluid dynamics measurements on the PDU reactor, gas bubble coalescence studies at Northwestern University, cold flow and mixing tests at Amoco's Naperville Research Center, and model implmentation. The objective of this quarterly progress report is to outline progress in the first three areas. Reactor fluid dynamics studies were carried out in cold-flow pilot plant Run 224 which used the Amocat-1A catalyst. The catalysts were fluidized by nitrogen and a slurry consisting of 25 wt % coal char fines in kerosene.  Analysis of Run 224 data was started and preliminary results reported.  Northwestern University completed the construction of a remote-controlled traversing camera mount for the video camera and electronic devices necessary to improve the quality of the video impage and to facilitate computer data acquisition. A holographic data analysis computer program  was developed for calculating the Sauter mean bubble diameter. In the liquid mixing study the experimental work for the liquid-phase mixing studies was completed. The results have been used to develop a correlation between the liquid dispersion coefficient and the process variables. The lateral gamma-ray scanning experiments across the reactor were performed in order to evaluate the radial uniformity of phase holdups. (ERA citation 08:031057)

REPORT  NUMBER: DOE/PC/30026-T4

CONTRACT  NUMBER: AC22-80PC30026