NOVELTY - Production and upgrading of a pyrolysis product, involves: (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; (b) passing the primary gaseous product through a first outlet at or near the top of the first reactor and to a second reactor; (c) contacting the primary gaseous product with an upgrading catalyst; and (d) removing the char from the first reactor via a second outlet located at or near the bottom of the first reactor.    USE - The process is useful for producing and upgrading of a pyrolysis product (claimed).    ADVANTAGE - The process allows for rapid catalytic upgrading of primary pyrolysis products into products that are fungible with current petroleum-derived liquid hydrocarbon fuels, while preventing char and associated catalyst poisons from contacting upgrading catalysts that convert these primary products.    DETAILED DESCRIPTION - Production and upgrading of a pyrolysis product, involves: (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, where the 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 a second reactor, where the primary gaseous product passing through the first outlet entrains less than 0.5 wt.% of the char produced by the pyrolyzing of step (a); (c) contacting the primary gaseous product with an upgrading catalyst; and (d) removing the char from the first reactor via a second outlet located at or near the bottom of the first reactor. An INDEPENDENT CLAIM is included for a system for the production and upgrading of a pyrolysis product, comprising a pyrolysis reactor adapted for pyrolyzing a biomass feedstock to produce a primary gaseous product, where the pyrolysis reactor comprises at least one auger, an inlet for a biomass feedstock and an outlet, where the pyrolysis reactor contains a solid particulate heat carrier and char, where the reactor is adapted to provide a disengagement zone that is, in turn, adapted to allow the terminal falling velocity of entrained char and heat carrier particles to become greater than the upward local velocity of the primary gaseous product in the disengagement zone prior to leaving the first reactor via the outlet such that the reactor retains at least 99.5 wt.% of the solid particulate heat carrier and char in the pyrolysis reactor.