GENERATING DEOXYGENATED PYROLYSIS VAPORS

摘要

The present disclosure relates generally to novel biomass pyrolysis processes and systems that decrease entrainment of char and other contaminants with the pyrolysis vapors. The process for the production and upgrading of a pyrolysis product, includes the steps of: (a) pyrolyzing a biomass feedstock in a first reactor comprising at least one auger that conveys the feedstock through the reactor from a first end towards a second end, wherein said pyrolyzing forms primary pyrolysis products comprising a primary gaseous product and char; (b) passing the primary gaseous product through a first outlet at or near the top of the first reactor and to an upgrading reactor; (c) contacting the primary gaseous product with an upgrading catalyst in the upgrading reactor that is isolated from contact with the char, wherein the primary gaseous product does not condense prior to thecontacting and comprises compounds containing less than 16 carbon atoms.