Energy and Exergy Analysis of a Novel Efficient Combined Process by Hydrothermal Degradation and Superheated Steam Drying of Degradable Organic Wastes

查看全文 作　　者：Shuqing [1]GUO;Yunhan [2]XIAO;Wendong [2]TIAN;Zhedian [2]ZHANG 机构地区：[1]Zhongyuan University of Technology, Zhengzhou City, Henan Province, 450007, China;[2]Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China 出　　处：《Journal of Thermal Science》索引2006年第15卷第3期,共7页 摘　　要：This paper considers the combination of hydrothermal degradation(HTD)and superheated steam(SHS)drying indisposal and processing of degradable organic wastes in municipal solid wastes(MSW).In SHS drying, a fractionof dryer thermal energy input can be recovered and used to satisfy the heat requirement in maintaining the HTDoperating temperature.Both energy and exergy analysis are applied to the combined process.The analysis coversranges of dryer inlet temperatures of 202.38-234.19℃ and feed water content of 32.5-65%.Thermal energyanalysis shows that the combination of HTD and SHS drying can achieve thermal energy self-sufficiency(TES)by manipulating process variables.The exergy analysis indicates the location,type,and magnitude of the exergylosses during the whole process by applying the second law of thermodynamics. 关 键 词：热降解 过热蒸汽干燥 能量分析 放射性分析