کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5476925 | 1521432 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Co-gasification of lignite and waste wood in a pilot-scale (10Â kWe) downdraft gasifier
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
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چکیده انگلیسی
Gasification of lignite and waste wood mixtures is investigated in an atmospheric pilot-scale (10Â kWe) downdraft gasifier, employing air as the gasifying medium. The system was originally designed and built for lignite fuel. The gasifier was operated on various lignite particle sizes; 22-25Â mm particle size was found favourable. However, clinker formation was observed during operation of gasifier using lignite as a fuel. Other issues were clinker formation, bridging or channel burning, erosion and corrosion due to high ash content of lignite, etc. The co-gasification study was intended to minimize the clinker formation along with improvement in the producer gas heating value. In order to do so, experiments with mixture of waste wood-lignite were carried out. Mixture ratios of 10%-90%, 20%-80% and 30%-70% (w/w) of waste wood-lignite were investigated and results of co-gasification experiments were compared to lignite only gasification. The lignite and wood particle size was 22-25Â mm and 50Â ÃÂ 50Â ÃÂ 5Â mm respectively. The gasifier performance was evaluated on various parameters namely, specific gas yield, efficiency based on energy and exergy, fuel consumption rate and gas composition. Mass and energy balances were carried out for gasification of lignite and its mixture with waste wood. With increase in wood percentage, the clinker formation reduced and almost became negligent with wood percentage reaching to 30%. The energy efficiency, exergy efficiency, LHV (Lower heating value) of gas and gas yield increased by 8.92%, 11.66%, 6.31% and 9.33%, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 119, 15 January 2017, Pages 834-844
Journal: Energy - Volume 119, 15 January 2017, Pages 834-844
نویسندگان
Vimal R. Patel, Darshil Patel, Nandan Varia, Rajesh N. Patel,