Pressurised gasification of wet ethanol fermentation residue for synthesis gas production.
Pressurised steam gasification of wet biomass in a fixed-bed downdraft gasifier was implemented to identify reaction conditions yielding the highest synthesis gas concentration and efficiency, and to examine the generation of sulphur compounds. The gasification of lignin-rich fermentation residue derived from a bench-plant for bioethanol production from woody biomass was investigated at p=0.99MPa and T=750-900°C for steam to biomass ratios (S/B) of 3.4-17 and equivalence ratios (φ) of 3.3-∞. The results showed that the highest concentration of around 70mol% was obtained at T⩾850°C, φ=13 and S/B=3.4, the highest efficiency of 0.26 was obtained at T=900°C, φ=3.3 and S/B=3.4, and sulphur compounds were H2S and COS. For the production of BTL synthesis gas, pressurised gasification has the potential to convert the wet residue below 77.3wt.% moisture contents.
Biomass Technology Research Centre, National Institute of Advanced Industrial Science and Technology (AIST), 3-11-32, Kagamiyama, Higashihiroshima, Hiroshima 739-0046, Japan.
Kenji
K
Koido
Toshiaki
T
Hanaoka
Kinya
K
Sakanishi
D056804:Biofuels / Q000382:microbiology*; D002248:Carbon Monoxide / Q000378:metabolism*; D000431:Ethanol / Q000378:metabolism*; D005740:Gases / Q000378:metabolism*; D006859:Hydrogen / Q000378:metabolism*; D008031:Lignin; D011312:Pressure; D013227:Steam; D014867:Water / Q000737:chemistry; D014934:Wood / Q000382:microbiology*
D056804:Biofuels; D005740:Gases; D013227:Steam; D014867:Water; D000431:Ethanol; D002248:Carbon Monoxide; D006859:Hydrogen; D008031:Lignin