Process for the production of bio-oil
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United States of America Patent
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Mar 6, 2018
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app pub date -
Jul 10, 2015
filing date -
Sep 6, 2013
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Abstract
The present disclosure relates to a process for the production of bio-oil which involves heating a mixture of a biomass slurry and a first catalyst composition at a temperature ranging from 200 to 350° C. and at a pressure ranging from 70 to 250 bars to obtain a mass containing crude bio oil, a residue and the catalyst; separating the crude bio oil from said mass to obtain a separated crude bio oil; extracting said separated crude bio oil with at least one solvent and evaporating said solvent to obtain a solvent free crude bio oil; subjecting said solvent free crude bio oil to reduction in the presence of a second catalyst composition and hydrogen source at temperature and pressure conditions similar to those employed for the conversion of bio mass into crude bio oil to obtain bio-oil. The second catalyst composition is the same as that of the first catalyst composition. The process also comprises a method step of recovering the first catalyst and reusing it either for preparing crude bio oil or bio oil or both.
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