Reactivity of coal in direct hydrogenation processes. Technical progress report, December 1985-February 1986

Technical Report · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5850275

Baldwin, R M

This document summarizes the second quarter of research into the relationship between coal characteristics and coal reactivity in direct hydrogenation liquefaction processes. The objective of the research program is to measure and model the rate and extent of coal liquefaction under some standard set of conditions for a wide suite of coals, and then correlate the observed liquefaction reactivity with basic coal chemical and geochemical features. Research during the past 3 months has focussed on measuring the reactivity profiles for a suite of 13 coals from the Exxon sample bank at one set of reaction conditions. The reaction parameters employed were as detailed in the previous quarterly report, and consisted of microautoclave (tubing-bomb) runs in 1-methylnaphthalene vehicle at a vehicle-to-coal ratio of 1/1. The initial (cold) hydrogen partial pressure was set at 900 psi, and all runs were made at 425/sup 0/C in order to obtain comparative data for kinetic analysis. The results of these runs show that striking differences are present in the rate and extent of reaction for this initial coal suite. Preliminary examination of the reaction profiles indicates that previous correlations developed for coals from a much narrower rank spectrum will need to be modified in order to account for the reactivity differences being observed within this first comprehensive data set. Additional data on the rate and extent of formation of solvent solubility classifications (oils/asphaltenes/preasphaltenes) has been found to show extreme differences in coals of similar reactivity. 5 refs., 4 figs., 1 tab.

• Research Organization: Colorado School of Mines, Golden (USA). Dept. of Chemical Engineering and Petroleum Refining
• DOE Contract Number: FG22-85PC80907
• OSTI ID: 5850275
• Report Number(s): DOE/PC/80907-T1; ON: DE86011275
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ACTIVATION ENERGY
ALKYLATED AROMATICS
AROMATICS
ASPHALTENES
ASPHALTS
AUTOCLAVES
BITUMENS
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COAL LIQUEFACTION
COAL RANK
CONDENSED AROMATICS
CORRELATIONS
DATA
ENERGY
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
FURANS
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
HYDROGENATION
INFORMATION
KINETICS
LIQUEFACTION
MATERIALS
MEDIUM PRESSURE
METHYLNAPHTHALENES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
REACTION KINETICS
RESEARCH PROGRAMS
SOLVENT PROPERTIES
SUBBITUMINOUS COAL
TAR
TETRAHYDROFURAN
THERMOCHEMICAL PROCESSES
TIME DEPENDENCE
YIELDS