文献类型：期刊文献

英文题名：In situ experimental study of CO2 gasification of petcoke particles on molten slag surface at high temperature

作者：Liu, Ming[1];Shen, Zhongjie[1];Liang, Qinfeng[1];Xu, Jianliang[1];Liu, Haifeng[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, POB 272, Shanghai 200237, Peoples R China

年份：2021

卷号：285

外文期刊名：FUEL

收录：;EI(收录号：20203909226535);WOS:【SCI-EXPANDED(收录号:WOS:000588132400113)】；

基金：This study was supported by the Shanghai Engineering Research Center of Coal Gasification (18DZ2283900), National Natural Science Foundation of China (21878095 and 21908063) and National Key R&D Program of China (2018YFC0808500).

语种：英文

外文关键词：Interface reaction; Molten slag; Petcoke particle; Catalytic effect; Heat and mass transfer

摘要：The gasification reaction of petcoke on wall slag layer was an important issue that should be studied during the co-gasification process of coal and petcoke. In present work, the gasification characteristics of petcoke particles on molten slag surface was investigated using a high temperature stage microscope. The catalytic effect of slag on petcoke gasification on slag surface was demonstrated. The experimental results demonstrated that the catalytic effect of slag only worked when the particle was on the surface of slag. The catalyst vapor had no influence on the reactivity of petcoke. What's more, the SEM analysis result showed that the reaction surface area of petcoke was decreased as a result of the deposition process. The effect of molten slag on particle temperature could be neglected as a result of the weak endothermic effect. Therefore, the change of petcoke reactivity rely on the synergy between catalytic effect of slag and the decreased reaction surface area. Besides, the increased residence time of petcoke also could increase the carbon conversion compared with that in gasifier chamber.