THERMOCHEMICAL TREATMENT OF CELLULOSIC MATERIALS
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United States of America Patent
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Oct 14, 2021
app pub date -
Aug 15, 2019
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Aug 24, 2018
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Abstract
A method of producing levoglucosenone from particulate cellulosic material. The method comprises forming a premix of particulate cellulosic material, water, acid and a polar organic solvent. The solvent has a higher boiling point than levoglucosenone. The pre-mix is fed into a pyrolysis reactor, such as a fluidised bed reactor, in which the pre-mix is fluidised by a fluidising gas. The reactor is maintained at a temperature within the range 250° C. to 450° C., and gaseous products and char are withdrawn from the pyrolysis reactor. Levoglucosenone and the polar organic solvent are condensed from the gaseous products, produced by the reactor.
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