Comparative investigations of coal pyrolysis under inert gas and H2 at low and high heating rates and pressures up to 10 MPa☆
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Influence and action mechanism of pressure on pyrolysis process of a low rank Naomaohu coal at different temperatures
2022, Journal of Analytical and Applied PyrolysisCitation Excerpt :One is the decrease of char yield under pressurized condition, known as the promoting effect. Due to the high volatile and hydrogen content of Naomaohu coal, at low temperature, tar free radicals and coal char undergo hydrogenation reaction, gas products and tar increase, and the char yield decreases [24–26], increasing the pressure within a certain range promotes this process. Furthermore, pressurization enhances the heat transfer rate of coal char and the movement rate of molecules [27], causing an increase in the release rate of volatiles and a decrease in the probability of secondary reactions of tar.
Early-stage kinetics and char structural evolution during CO<inf>2</inf> gasification of Morupule coal in a wire-mesh reactor
2021, Chemical Engineering Journal
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Presented at the Conference: ‘Industrial Conversion of Coal and Carbon to Gas, Liquid and High-Value Solid Products’ organized by the Industrial Carbon and Graphite Group of the Society of Chemical Industry, and held at the Society of Chemical Industry, 14, Belgrave Square, London SW1X 8PS, UK, 7–9 April 1981.