摘要
基于生物质湿解腐殖化处理过程中蒸汽的供给和节能与环保的多重考虑，构建了湿解腐殖化处理分别与过热蒸汽干燥及热风干燥联合的系统，并对两种不同干燥方式的系统进行了热力学分析。结果表明，在环境温度20℃，给料含水质量分数30％～65％时，过热蒸汽干燥可以实现29．71％～40．95％的能量自给率；在给料含水质量分数为60％，环境温度5～35℃时，能量自给率大约为28．70％，同热风干燥相比，节煤率都超过了30％。
Based on the consideration of energy-saving and environmental protect in producing hydrothermal humification materials system, two modes were presented. One case was the combination of hydrothermal humification processing and superheated steam drying; the other was the combination of hydrothermal humification processing and conventional hot air drying. Energy analysis was applied to both combined process. The analysis covers the ranges of ambient temperatures of 5-35℃ and feed water content of 30%-65%. In superheated steam drying, the dryer operates in a superheated steam recycle mode, thermal energy recovered by condensing the purged superheated steam can be used in supplying the hydrothermal humification digester and the preheater heat requirement. Thermal energy analysis shows that, for the superheated steam drying system, the thermal energy self-sufficiency is 29.71%-40.95% for feed water content of 30%-65%, and about 28.7% for ambient temperature 5-35℃, respectively. Compared with hot air drying, coal saving is over 30%.
出处
《热科学与技术》
CAS
CSCD
北大核心
2014年第2期136-141,共6页
Journal of Thermal Science and Technology
基金
国家自然科学基金资助项目(51206194)
关键词
湿解腐殖化
生物质
过热蒸汽干燥
热风干燥
热力学分析
hydrothermal humification
biomass
superheated steam drying
hot-air drying
thermalanalysis
