文献类型：期刊文献

英文题名：Experimental and modeling study on gasification of millimeter coal char particle via real-time measurement and correction of reaction temperature

作者：Zhang, Haigang[1,3];Shen, Zhongjie[1,3];Xu, Jianliang[1,3];Liang, Qinfeng[1,3];Dai, Zhenghua[1,2,3];Gong, Jianhong[4];Liu, Haifeng[1,3]

机构：[1]East China Univ Sci & Technol, Natl Energy Coal Gasificat Technol Res & Dev Ctr, POB 272, Shanghai 200237, Peoples R China;[2]Xinjiang Univ, Sch Chem Engn & Technol, Urumqi 830046, Peoples R China;[3]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, POB 272, Shanghai 200237, Peoples R China;[4]Sinopec Res Inst Petr Proc, Beijing 100083, Peoples R China

年份：2024

卷号：230

外文期刊名：INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER

收录：;EI(收录号：20242316190540);WOS:【SCI-EXPANDED(收录号:WOS:001249191100001)】；

基金：This study is supported by the National Natural Science Foundation of China (22378130) , the National Key R &D Program of China (2022YFC3902502-04) , Key R &D Program of Xinjiang Uygur Autono- mous Region (2022B03026-1) , the Fundamental Research Funds of the Central Universities (2022ZFJH004) .

语种：英文

外文关键词：Coal gasification; Temperature distribution; Heat transfer; Ash layer; Modified kinetic model

摘要：Accurate measurement of particle temperature is crucial for calculating the kinetic parameters of gas-solid reaction, and predicting the carbon conversion in gasifiers. In this study, an in-situ experiment of single coal particle gasification was conducted by the online temperature measurement system. The heat and mass transfer processes of the internal carbon core were modeled under the consideration of the ash layer, and the actual reaction temperature of the internal core was calculated. The results showed a gradual decrease in particle surface temperature from the periphery to the interior during the gasification process. Highly non-uniform temperature distributions exceeding 80 K on the surface of the reacting particles were observed. Calculation results showed the temperature of the internal carbon core was lower than the surface by 27 K to 72 K from 1173 K to 1373 K. A modified kinetic model was proposed based on the unreacted core temperature and the reaction area. Compared with the traditional model, the proposed model prediction demonstrated a better agreement with the experimental data, particularly in the initial and late stages.