Abstract
The study deals with the hydropyrolysis of coal under shock heating in order to learn more about the elementary reactions, which take place on the coal surface or in the interior of the carbon grain and which determine the product range and product yield. For recording the factors influencing primary cracking of products and the secondary reactions of the crack products, investigations were carried out by varying the particle diameter of the coals used (3 coals of different carbonization degrees) and the hydrogen pressure. For further recording of secondary reactions and thus the mechanism of the hydropyrolysis, typical crack products with primary character were presented on or in the coal; this was done by the absorption of a defined quantity of model compounds from the gas phase. For shock heating, the Curie point method (inductive heating) was used. It turned out that, with increasing H/sub 2/ pressure, the formation of H-transporting compounds and the availability of the molecular hydrogen from the gas phase is increased but the volatility of the reaction products is inhibited by cross-linking reactions of radicals with high-molecular crack products. High temperatures in shock heating can compensate this negative effect.
Citation Formats
Sperling, R.
Coal reactions during shock heating in a hydrogen atmosphere. Reaktionsverhalten von Kohlen bei schockartiger Aufheizung in Wasserstoffatmosphaere.
Germany: N. p.,
1987.
Web.
Sperling, R.
Coal reactions during shock heating in a hydrogen atmosphere. Reaktionsverhalten von Kohlen bei schockartiger Aufheizung in Wasserstoffatmosphaere.
Germany.
Sperling, R.
1987.
"Coal reactions during shock heating in a hydrogen atmosphere. Reaktionsverhalten von Kohlen bei schockartiger Aufheizung in Wasserstoffatmosphaere."
Germany.
@misc{etde_6088969,
title = {Coal reactions during shock heating in a hydrogen atmosphere. Reaktionsverhalten von Kohlen bei schockartiger Aufheizung in Wasserstoffatmosphaere}
author = {Sperling, R}
abstractNote = {The study deals with the hydropyrolysis of coal under shock heating in order to learn more about the elementary reactions, which take place on the coal surface or in the interior of the carbon grain and which determine the product range and product yield. For recording the factors influencing primary cracking of products and the secondary reactions of the crack products, investigations were carried out by varying the particle diameter of the coals used (3 coals of different carbonization degrees) and the hydrogen pressure. For further recording of secondary reactions and thus the mechanism of the hydropyrolysis, typical crack products with primary character were presented on or in the coal; this was done by the absorption of a defined quantity of model compounds from the gas phase. For shock heating, the Curie point method (inductive heating) was used. It turned out that, with increasing H/sub 2/ pressure, the formation of H-transporting compounds and the availability of the molecular hydrogen from the gas phase is increased but the volatility of the reaction products is inhibited by cross-linking reactions of radicals with high-molecular crack products. High temperatures in shock heating can compensate this negative effect.}
place = {Germany}
year = {1987}
month = {Apr}
}
title = {Coal reactions during shock heating in a hydrogen atmosphere. Reaktionsverhalten von Kohlen bei schockartiger Aufheizung in Wasserstoffatmosphaere}
author = {Sperling, R}
abstractNote = {The study deals with the hydropyrolysis of coal under shock heating in order to learn more about the elementary reactions, which take place on the coal surface or in the interior of the carbon grain and which determine the product range and product yield. For recording the factors influencing primary cracking of products and the secondary reactions of the crack products, investigations were carried out by varying the particle diameter of the coals used (3 coals of different carbonization degrees) and the hydrogen pressure. For further recording of secondary reactions and thus the mechanism of the hydropyrolysis, typical crack products with primary character were presented on or in the coal; this was done by the absorption of a defined quantity of model compounds from the gas phase. For shock heating, the Curie point method (inductive heating) was used. It turned out that, with increasing H/sub 2/ pressure, the formation of H-transporting compounds and the availability of the molecular hydrogen from the gas phase is increased but the volatility of the reaction products is inhibited by cross-linking reactions of radicals with high-molecular crack products. High temperatures in shock heating can compensate this negative effect.}
place = {Germany}
year = {1987}
month = {Apr}
}