Hi all, Got a question about Imbert style downdrafts…. One of the obvious characteristics of an Imbert style gasifier is the hearth restriction. The combustion/oxidation zone is physically larger than the subsequent charcoal/reduction zone. As best I can find in the literature, the size change is worked out so that there is an approximate four-fold increase in superficial gas velocity through the reduction zone versus the oxidation zone. The actual velocity increase is even higher due to the higher temp of the reduction zone over the oxidation zone and also to an increase of total mass as the gasification of the solid fuel adds its molecular load to the gas stream.
So my question is, why? Why did the engineers of the Imbert decide that they needed a higher gas velocity through the reduction zone versus the oxidation zone? Thanks! -brian _______________________________________________ Gasification mailing list [email protected] http://listserv.repp.org/mailman/listinfo/gasification_listserv.repp.org http://gasifiers.bioenergylists.org http://info.bioenergylists.org
