Hydropyrolysis of sugar cane bagasse : effect of sample configuration on bio-oil yields and structures from two bench-scale reactors

摘要: Abstract A wire-mesh reactor, with the capability of virtually eliminating secondary reactions, has been used as base-case in study product yields and structures from pyrolysis hydropyrolysis a sample sugar cane bagasse fixed-bed `hot-rod' reactor. Results two reactors have compared to determine how best assess bench-scale data which might be for eventual process development. Experiments carried out at 600°C pressures up 70 bar. Structural features bio-oils examined by size exclusion chromatography FT-infrared spectroscopy. In both effect increasing pressure was reduce bio-oil total volatile yields; were marginally higher than under equivalent operating conditions. About 5 6% is lost consequent increase recovered chars. Pressure reactor bed depth appear affect only thermally more sensitive components bio-oils, beyond 40 bar, or level reported, found not an appreciable extent. Taken together, these indicate that about one-third original biomass may converted oil direct pyrolysis. Size chromatograms spectra experiments conducted 1 70 bar suggest oils hot-rod experience greater degree reactions those Using tetrahydrofuran eluent, highest molecular masses around 1000 u terms polystyrene standards. However, comparison using 1-methyl-2-pyrrolidinone indicated partial loss when THF. Our findings strongly THF suitable eluent characterisation biomass-derived chromatography.