Discovery and intensity characterization of TDP and PRP based on temperature evolution history during the pyrolysis for large biomass particle  

作　　者：Rui Chen Jun Cai Xinli Li Xiaobin Qi 

机构地区：[1]State Key Laboratory of Coal Conversion,Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China [2]University of Chinese Academy of Sciences,No.19 Yuquan Road,Shijingshan District,Beijing 100049,China [3]Shanxi Engineering Research Center of Coal Clean,Efficient Combustion and Gasification,No.1619 Yunzhou Street,Datong City,Shanxi Province 037305,China [4]Shanxi Key Laboratory of Coal Flexible Combustion and Thermal Conversion,No.1619 Yunzhou Street,Datong City,Shanxi Province 037305,China

出　　处：《Carbon Resources Conversion》2024年第3期41-50,共10页碳资源转化（英文）

基　　金：supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA29020600);the Special Research Assistant Project of the Chinese Academy of Sciences.

摘　　要：The pyrolysis behaviors and temperature evolution history of lignocellulosic biomass(Beech,BH)were characterized using a novel pyrolysis model-C-DAEM.The simulation results were validated through corresponding experimental data.Based on the simulation results,two distinct peaks were observed in the temperature difference between the surface and center(TDSC)curve,namely the thermal disturbance peak(TDP)and the pyrolysis reaction peak(PRP).The presence of TDP and PRP was confirmed by examining the heat flux ratio between the pyrolysis rate and the temperature rise rate.Moreover,the results indicated that three factors,namely heating temperature,particle size,and pyrolysis rate,influenced the relative intensity between TDP and PRP.By changing the values of each impact factor,conditions where TDP owns the same height with PRP were obtained under different working conditions.These findings have led to the development of a dimensionless number,naming the pyrolysis-heating surface-center number(PHSC number).This number could provide a comprehensive indication of the collective impact of the aforementioned factors when TDP and PRP exhibit equal peak heights.

关 键 词：DAEM Large biomass particle PYROLYSIS Temperature distribution Dimensionless number 

分 类 号：TQ35[化学工程]