TITLE: Kinetic Model Development for Low-Rank Coal Liquefaction. Progress Report, March 31-July 31, 1984.

AUTHOR: R. G. Anthony;   C. V. Philip;   A. Koker;   P. Moore;   Y. Tarng.

INST.  AUTHOR: Texas A and M Univ., College Station. Kinetics, Catalysis, and Reaction Engineering Lab.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  Aug 84,  66p.

NTIS ORDER NO.: DE85017933/INW

ABSTRACT:

Progress reports are presented for the following tasks: (1) batch liquefaction of ZAP-2 lignite with a UNDERC-PDU-recycle solvent; (2) estimation of parameters in a bubble column reactor for coal liquefaction; and (3) analysis of the coal derived products. During this quarter the emphasis has been on the refining of the experimental techniques for conducting the tubing bomb reactor experiments, analyzing the products by size exclusion chromatography (SEC) and size exclusion chromatography combined with gas chromatography (SEGC). The contents of the tubing bomb microreactors are mixed by insertion of a short 1.5 mm stainless steel rod inside the reactor. The reactors are agitated by shaking at 400 cpm. A cold experiment with mineral oil in a glass tube was used to test the degree of mixing. Data are reported that were obtained by agitating the reactors at 220 cpm which was believed to be adequate. However, because the data show repolymerization, the system was redesigned to operate at 400 cpm. The data which show polymerization and condensation of THF soluble material were also taken at 793 exp 0 K. This high temperature combined with the fact that the product slurry is probably not a very good hydrogen donor solvent could also have caused the polymerization of the THF solubles. The SEGC analysis procedure has been modified to collect all of the sample from the SEC. The previous procedure collected only 100 microliter samples. The procedure was changed to insure that no components were missed. SEC's of ZAP-2, B-3, Wyodak and Big Brown product slurries are presented in this report. Quantitative analysis should be possible by the end of the next quarter. 8 refs., 15 figs., 7 tabs. (ERA citation 10:043622)

REPORT  NUMBER: DOE/FC/10601-1910

CONTRACT  NUMBER: AC18-83FC10601