生物质热解半焦特性及其水蒸气吸附规律  

PROPERTY OF BIOMASS CHAR AND ITS VAPOR ADSORPTION ABILITY

作　　者：张军[1] 陈群[1] 由长福[1] 

机构地区：[1]热科学与动力工程教育部重点实验室,清华大学热能工程系,北京100084

出　　处：《太阳能学报》2016年第2期500-504,共5页Acta Energiae Solaris Sinica

摘　　要：选择杨木和松木两种木材作为热解原料，在常压下250～550℃内选取4个温度进行热解，并对生物半焦的性质进行分析。通过对生物半焦比表面积、表面官能团、孔隙率、氧碳比、氮碳比等性质的分析，研究热解得到的生物质半焦水蒸气吸附的影响规律。研究发现：生物半焦对水蒸气的吸附并非由单一性质所决定，而是受到比表面积、表面官能团、孔隙率等因素共同决定。The vapor absorption process of the biomass char is of great importance in improving soil quality. The poplar and pine were used as the raw materials for the biomass char production. The two kinds of woods were pyrolyzed at four selected temperatures between 250℃ and 550℃ under atmospheric pressure. The properties of the biomass char were analyzed after pyrolysis. Through the specific surface area, surface functional groups, porosity, carbon and oxygen ratio, nitrogen and carbon ratio analyses, the influence of the biomass char＇ s property on its vapor adsorption ability was investigated. The results show that the water vapor adsorption of the biomass char is not determined by a single property, but by joint decision of specific surface area, surface functional groups, porosity and other factors.

关 键 词：生物质热解 生物半焦 比表面积 表面官能团 水蒸气吸附 

分 类 号：TK6[动力工程及工程热物理—生物能]