Method for producing and preparing fast pyrolysis products from biomass for an entrained-flow pressure gasification

US8043391B2 · kind B2 · utility

Assignee

• Forschungszentrum Karlsruhe GmbH · DE

Inventors

• Eckhard Dinjus · Leimersheim, DE
• Edmund Henrich · Dettenheim, DE
• Klaus Raffelt · Karlsruhe, DE
• Friedhelm Weirich · Karlsdorf-Neuthard, DE

Key dates

• Filing date: Jul 29, 2006
• Grant date: Oct 25, 2011
• Expiry date: Dec 7, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P30/20
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method is provided for producing and preparing fast pyrolysis products from a biomass for entrained-flow pressure gasification that includes: heating of the biomass under exclusion of oxygen in a pyrolysis reactor, a temperature of between 400 to 600° C. being established for one to 50 seconds, such that the biomass reacts to form porous pyrolysis coke, pyrolysis condensate and pyrolysis gas; and drawing off the pyrolysis gas; condensing vaporous constituents of the pyrolysis condensate in a plurality of condensation stages so as to: condense, in a first condensation stage, at temperatures above the dew point of water, a low-temperature carbonization tar from the vaporous constituents; and condense and separate at temperatures between 0° C. and the dew point of water, in at least one subsequent condensation stage, an aqueous solution of oxygen containing organic compounds.