文献类型：期刊文献

英文题名：Numerical investigation of the oxy-fuel combustion in the fluidized bed using macroscopic model supported by CFD-DDPM

作者：Dong, Lu[1];Wang, Liang[2];Wen, Huaizhou[3];Lin, Zhong[4];Yao, Zhiyi[5];Zou, Chan[1];Xu, Hongpeng[6];Hu, Hongyun[1];Yao, Hong[1]

机构：[1]Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China;[2]China Power Hua Chuang Suzhou Elect Technol Res Co, Suzhou 215125, Peoples R China;[3]Xian Thermal Power Res Inst Co Ltd, Xian 740032, Peoples R China;[4]Guangdong Ocean Univ, Fac Chem & Environm Sci, Zhanjiang 524088, Peoples R China;[5]CBE Ecosolut Pte Ltd, 3 Res Link, Singapore 117580, Singapore;[6]Yanshan Univ, Sch Vehicle & Energy, Qinhuangdao 066004, Peoples R China

年份：2024

卷号：12

期号：5

外文期刊名：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:001312551900001)、、EI(收录号：20243616990926)、Scopus(收录号：2-s2.0-85202862801)、WOS

基金：This work was supported by the National Natural Science Foundation of China (52206141, 41977125) , the Natural Science Foundation of Hebei Province (E2021203041) , and the Project funded by China Post-doctoral Science Foundation (2023T160245, 2022M711238) .The au-thors also gratefully acknowledge the assistance of the Analytic and Testing Center of Huazhong University of Science and Technology for the experimental measurements.

语种：英文

外文关键词：Macroscopic model; Oxy-fuel combustion; DDPM; Recirculated flue gas; Reactor network

外文摘要：Oxy-fuel combustion (OFC) presents a promising strategy for reducing carbon emissions from coal combustion. Traditional multiphase flow models (MFM) used for OFC simulations face challenges in integration and optimization with systems like carbon capture and electrolysis. Constructing a cost-effective and versatile macroscopic model simulation is critical for the industrial application of OFC. This study employs CFD-DDPM to obtain fluid dynamics parameters and couples heat and mass transfer models to construct macroscopic model of OFC based on a fluidized bed. Through calculations of OFC using both the macroscopic model and CFD-DDPM, molar fractions of O2, CO2, NO, and SO2 under various combustion conditions were found consistent with experimental measurements. Predictions under Recirculated Flue Gas (RFG) conditions showed comparable O2 and CO2 molar fractions at 30 % O2 & RFG, with the macroscopic model achieving 10.3 % and 69.3 %, versus 6.9 % and 72 % in CFD-DDPM. This demonstrates the ability of a macroscopic model to predict the design of the OFC in the fluidized bed. Importantly, the computational time of the macroscopic model is over 99 % shorter than that of CFDDDPM. Consequently, employing a rapid simulation based on the macroscopic model method enables efficient simulation of OFC systems and facilitates the integration of oxygen combustion systems with other technologies like electrolysis. This approach provides valuable guidance for the development and application of OFC technology.