Importance

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Abstract

A fast pyrolysis system includes an auger housing having an inlet, an outlet, and an inner wall. A rotatable auger is mounted in the housing. The auger has surfaces defining at least one spiral channel. The spiral channel is tapered from a first depth adjacent the housing inlet to a second lesser depth adjacent the housing outlet. The auger is rotatable to propel particulate materials from the housing inlet toward the housing outlet to heat the particulate material to a first temperature sufficient to convert at least a portion of the particulate material into a vapor. A heat exchanger transfers a heat of vaporization from a heated medium to the auger housing inner wall. A filter assembly is connected downstream to the housing outlet in order to filter char fines from the vapor. A condenser is connected downstream to the filter assembly and is adapted to condense the vapor stream into bio-oil.

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First Claim