Health & Environmental Research Online (HERO)


Print Feedback Export to File
8248273 
Journal Article 
Kinetics of Thermal Liquefaction of Belle Ayr Subbituminous Coal 
Cronauer, DC; Shah, YT; Ruberto, RG 
1978 
0 
Industrial and Engineering Chemistry Product Research and Development
ISSN: 0196-4305 
17 
3 
281-288 
English 
This paper presents the results of a kinetic study of thermal liquefaction of Belle Ayr subbituminous coal. The experimental work was carried out in a laboratory-scale, continuous stirred tank reactor. The results for the conversion of coal and the production of pre-asphaltenes, asphaltenes, oils, and gases such as C1-C6, NH3, H2S, CO, CO2, and water are given as functions of slurry space time and temperature. A temperature range of 400 to 470 °C and a space time range of approximately 5 to 55 min were examined. All the experimental data were taken at a total unit pressure of 2000 psig and coal-to-solvent ratio of 1:1.5. Two solvents, hydrogenated anthracene oil and hydrogenated phenanthrene, were investigated. The experimental results were correlated by a kinetic model which assumes the reaction mechanism. It is shown that this reaction mechanism (with all reaction rates assumed to be pseudo first order with respect to reacting species) correlates data reasonably well at the temperature levels of 400, 425, and 450 °C for all space times, and at 460 and 470 °C for small space times. © 1978, American Chemical Society. All rights reserved.