کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11016675 1774266 2019 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrothermal gasification of sorbitol: H2 optimisation at high carbon gasification efficiencies
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Hydrothermal gasification of sorbitol: H2 optimisation at high carbon gasification efficiencies
چکیده انگلیسی
Using both experiments and modelling, hydrothermal gasification of sorbitol (SB) aiming at maximal carbon to gas conversion and H2 production was investigated over a wide temperature range (270-350 °C). Kinetics were studied in a continuous tubular reactor using a Pt/γ-Al2O3 catalyst. The addition of N2, resulting in lower H2 concentrations in the liquid phase, was found to have a beneficial effect in terms of higher H2 yield without compromising on the carbon gasification. The highest H2 yield obtained in this work was 4 mol H2/mol SB. Existing reaction schemes for sorbitol gasification were used to derive a path-lumped scheme. A multi-phase reactor model including a path-lumped scheme and gas-liquid-solid mass transfer was developed and parameterized based on datasets with varying temperature, space velocity, inlet gas composition (N2 or H2) and gas-liquid flow ratio. The developed model was used to provide guidelines for the design of an industrial reactor for the gasification of 10 tons/h of 10 wt% aqueous sorbitol. The effect of N2 stripping and industrially attainable kLa values were found to boost the H2 yield from 4 to 12 mol H2/mol SB making it an attractive process for further consideration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 358, 15 February 2019, Pages 351-361
نویسندگان
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