文献类型：期刊文献

英文题名：Measurement and modeling on local ash layer induced combustion temperature heterogeneity of single coal/biomass particle

作者：Zhang, Haigang[1,2];Shen, Zhongjie[1,2];Liu, Junjie[1,2];He, Guinan[1,2];Liu, Ming[4];Liu, Haifeng[1,2,3];Wang, Chi-Hwa[5]

机构：[1]East China Univ Sci & Technol, Natl Energy Coal Gasificat Technol Res & Dev Ctr, POB 272, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, POB 272, Shanghai 200237, Peoples R China;[3]Liaoning Petrochem Univ, Fushun 113001, Liaoning, Peoples R China;[4]Shanghai Power Equipment Res Inst Co LTD, Shanghai 200240, Peoples R China;[5]Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117585, Singapore

年份：2025

卷号：510

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20251218075251);WOS:【SCI-EXPANDED(收录号:WOS:001467932800001)】；

基金：This study is supported by the National Natural Science Foundation of China (22378130 and U23B20170) , the National Key R & D Program of China (2022YFC3902502-04) .

语种：英文

外文关键词：Coal and biomass; Combustion; Single particle surface; Temperature heterogeneity; Heat transfer

摘要：The in-situ measurement experiments of single coal/biomass particle combustion were conducted on a high-resolution micro-infrared online visualization system, with heterogenetic temperature distribution modification and modeling. Morphology and combustion characteristics of coal and biomass single particles were comparatively analyzed, and the evolution pattern and surface temperature were obtained. Results showed that coal particles performed two-stage shrinking processes and progressive temperature distribution, while the biomass particles showed a one-stage shrinking process and random temperature distribution during combustion. The instantaneous heat release capacity of biomass is comparable to that of coal. Biomass particles had lower combustion temperature on the surface than coal particles, with a difference of 33 C-degrees. For coal particles, the calculated carbon core temperature was significantly higher than the measurements (>200 C-degrees) and decreased with increasing temperature and decreasing ash layer thickness. This model facilitated the quantitative assessment of heat transfer retardation effects induced by ash layer formation.