In-Situ Upgrading Of Biomass Pyrolysis Vapor Using Water-Gas Shift And Hydroprocessing
AssigneeChevron U.S.A. Inc.
InventorsYunquan Liu, Armando Joseph Belardinelli, Curtis L. Krause
Life of this patent
Estimating the term…
Abstract
Processes for thermal conversion of biomass are provided. The processes involve upgrading the pyrolysis vapor from a pyrolysis reactor. The steps include thermally converting a biomass feedstock in a pyrolysis reactor, recovering a pyrolysis vapor from the reactor, passing the pyrolysis vapor in contact with a water-gas shift reaction catalyst and a hydrotreating catalyst, and converting the resulting upgraded pyrolysis vapor into a liquid product. The resulting biooil liquid product is more refined, and the overall processes offer economic and energy efficiency.
Claims15
A process for the thermal conversion of biomass comprising the steps of:
- a) thermal conversion of a biomass feedstock in a pyrolysis reactor;
- b) recovering a pyrolysis vapor from the reactor;
- c) passing the pyrolysis vapor in contact with a water-gas shift reaction catalyst and a hydrotreating catalyst to produce an upgraded pyrolysis vapor;
- and
- d) converting the upgraded pyrolysis vapor from step c) into a liquid product.
Dependencies are inferred from the claim text.