Reciprocating biomass conversion scheme
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United States of America Patent
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Jun 25, 2019
Grant Date -
Dec 24, 2015
app pub date -
Jun 17, 2015
filing date -
Jun 18, 2014
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Abstract
A method for converting a biomass to a bio-oil includes providing a four-stroke internal combustion engine having at least one cylinder, at least one piston, and a crankshaft coupled to each of the at least one piston. The method also includes coupling a power source to the crankshaft in a manner such that the power source drives rotation of the crankshaft. The method also includes injecting a first mixture including a biomass and a non-oxidizing compression gas into one of the cylinders. The method also includes compressing and heating the first mixture during a compression stroke of the pistons. The compression and heating of the first mixture pyrolizes the biomass to produce a second mixture including a bio-oil and the compression gas. The method also includes decompressing and cooling the second mixture during an expansion stroke of the pistons. The decompression and cooling of the second mixture quenches secondary pyrolysis.
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