文献类型：期刊文献

英文题名：The physicochemical properties of different biomass ashes at different ashing temperature

作者：Xiao, Ruirui[1];Chen, Xueli[1];Wang, Fuchen[1];Yu, Guangsuo[1]

机构：[1]E China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat, Shanghai 200237, Peoples R China

年份：2011

卷号：36

期号：1

起止页码：244

外文期刊名：RENEWABLE ENERGY

收录：;EI(收录号：20103713238211);WOS:【SCI-EXPANDED(收录号:WOS:000282845000029)】；

基金：This study was supported by the National Basic Research Program of China (20876048) and Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT-IRT0620).

语种：英文

外文关键词：Biomass ash; Ashing temperature; Ash characteristics; Ash fusion temperature

摘要：There are no specific standards for biomass ash analysis in China, so the standards for coal ash analysis are usually used to determine the property of biomass ash. Three kinds of biomass including rice straw, pine sawdust and Chinese Parasol Tree leaf burned at 815 degrees C, 600 degrees C and 500 degrees C respectively corresponding to the temperature required in the standard of GB and ASTM. The ash content and composition were analyzed. Based on the ash composition results, the volatilization of alkali oxides in biomass ash and slagging/fouling problems related to biomass thermochemical conversion were investigated. The alkali metals were relatively more volatile with the increasing of ashing temperature. The crystalline phase composition and surface morphology characteristics of the ash particles were investigated by XRD and SEM analysis. The increasing ashing temperature resulted in the decreasing of the diffraction intensities of metal salts and the increasing of the diffraction intensities of silicon compound. Ash fusion temperatures were measured by 5E-AFII Ash Fusion Analyzer. The results indicated that the ash content, composition, crystalline phases composition, surface morphology and ash fusibility were all closely related to ashing temperatures. The analysis at 600 degrees C ashing temperature was regarded as the optimal for an exact determination of ash properties. (c) 2010 Elsevier Ltd. All rights reserved.