Coal-Biomass Preheating Combustion Characteristics in Cement *** 1:Preheating of Coal/Biomass

作     者：LI Pengpeng REN Qiangqiang HAN Shaobo ZHANG Chi LYU Qinggang 

作者机构：School of Energy Power and Mechanical EngineeringNorth China Electric Power UniversityBeijing 102206China Institute of Engineering ThermophysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2023年第32卷第5期

页      面：1868-1877页

核心收录：

学科分类：080703[工学-动力机械及工程] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0814[工学-土木工程] 

基　　金：supported by Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA29020200) 

主　　题：cement precalciner biomass circulating fluidized bed preheating combustion 

摘      要：The co-combustion of biomass and coal can positively impact the environment and reduce the cost of power ***,biomass fuels have many *** fluidized bed(CFB)preheating combustion is suitable for co-combusting coal and biomass because of better fuel *** the cement industry,fuel combustion and raw meal decomposition in precalciners affect cement quality and cause pollutant *** preheating combustion method used in precalciners can improve combustion performance and reduce NO_(x)*** study investigated the preheating characteristics of a coal-biomass mixed fuel in a cement *** effects of load,biomass type,and biomass proportion on the preheated fuel and the conditions of the CFB were *** results indicated that a lower load reduces the combustible components in gaseous and solid preheated ***,due to the gas volume remains constant under different loads,a lower load also increases temperature and intensifies the *** carbon chain and microscopic structural activities of preheated fuels are considerably enhanced,facilitating their combustion in precalciners and reducing nitrogen oxides in rotary ***,adding biomass can improve the reactivity of a fuel subjected to ***,biomass fuels(e.g.,rice husks)exhibit high combustion efficiency,and thus high energy *** present study achieved better pore structure and molecular activity using preheated fuel from a CFB *** addition,the improvement of pore structure and molecular activity increases with the proportion of the biomass.