Theoretical analysis of anomalous explosion behavior for H2/CO/O2/N2 and CH4/O2/N2/CO2 mixtures in the light of combustion-induced rapid phase transition

In this work, a theoretical analysis was performed of anomalous explosion behavior for H-2/CO/O-2/N-2 and CH4/O-2/N-2/CO2 mixtures. In particular, a criterion has been developed that allows to distinguish cRPT, in both forms of incipient and fully developed phenomenon, from deflagration and detonation. The developed criterion, based on the evaluation of a characteristic time ratio (water condensation time/reaction time), has been validated using our experimental data and BASF experimental data. It has been found that the anomalous behavior observed by BASF researchers can be successfully interpreted in the light of cRPT. An updated explosion classification, which includes cRPT, has also been proposed. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.