VERBESSERTES VERFAHREN ZUR THERMISCHEN UMWANDLUNG VON BIOMASSE ZU FLÜSSIGEN PRODUKTEN

摘要

PCT No. PCT/CA93/00504 Sec. 371 Date Jul. 31, 1995 Sec. 102(e) Date Jul. 31, 1995 PCT Filed Nov. 24, 1993 PCT Pub. No. WO94/12592 PCT Pub. Date Jun. 9, 1994A high conversion of biomass, such as wood, sawdust, bark, or agricultural wastes, to liquids is obtained bypyrolysis at short reaction tines in a reactor capable of high heat transfer rates; the reactor being of the fluidized bed, circulating fluidized bed or transport type in which the conveying gas contains low and carefully controlled amounts of oxygen, allowing a reaction system with low concentrations of carbon monoxide or flammable gases with a resulting improvement in operating safety and potential improvement in thermal efficiency and capital costs. The oxidation steps may be carried out in one or two stages. The resulting liquid product may be used as an alternative liquid fuel or as a source of high-value chemicals.