Characteristics of the Temperature Distribution and Product Gas Evolving of an Updraft Biomass Gasifier

详细信息    查看全文

• 作者：Bin Li ; Hanping Chen ; Haiping Yang ; Xianhua Wang ; Shihong Zhang
• 刊名：Energy & Fuels
• 出版年：2013
• 出版时间：March 21, 2013
• 年：2013
• 卷：27
• 期：3
• 页码：1460-1465
• 全文大小：282K
• 年卷期：v.27,no.3(March 21, 2013)
• ISSN：1520-5029

文摘

This paper aims to reveal the temporal and spatial variation of temperature and product gas components inside the updraft biomass gasifier, and the relationship between it and the chemical reaction was also analyzed. Using wood processing residues, the gasification characteristics of the gasifier were studied in depth. The results indicated that the gas products could be ignited after the gasifier startup 4 min and the time of normal operation condition was 81 min. The optimum air flow rate of the gasifier was 1.9 m³/h, with a LHV of product gas of 4.38 MJ/Nm³, temperature of the oxidation zone of 960 掳C, and gasification intensity of 57.8 kg/(m²路h). Along with the height direction, the layered characteristic of reaction type was very obvious, and the height of the oxidation zone, reduction zone, pyrolysis zone, and desiccation zone could be calculated approximately as 130 mm, 95 mm, 195 mm, and the rest of the material height, respectively.