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Pyrolysis in Semi-Open Systems

Chapter

Abstract

Effects of pressure on product transport and enhanced secondary reactions are described, including simple ways of modeling them and the beneficial effect of H2. Fractionation of molecular types during vaporization is summarized. Cracking kinetics for oil and model compounds are reviewed. Nearly all results are consistent with an effective activation energy of 56–60 kcal/mol, although a higher energy may be appropriate at the low temperatures and higher pressures associated with cracking in the subsurface. The consequences of ignoring isoconversional character are described.

Keywords

Coal pyrolysis Coal hydrogenation Direct coal liquefaction Oil shale Effective activation energy DAEM Partition coefficient Kerogen decomposition Oil cracking Oil coking 

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.LivermoreUSA

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