文献类型：期刊文献

英文题名：Comprehensive model with time limited wall reaction for entrained flow gasifier

作者：Xu, Jianliang;Liang, Qingfeng;Dai, Zhenhua;Liu, Haifeng[1]

机构：[1]East China Univ Sci & Technol, Key Lab Coal Gasificat & Energy Chem, Minist Educ, POB 272, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, POB 272, Shanghai 200237, Peoples R China

年份：2016

卷号：184

起止页码：118

外文期刊名：FUEL

收录：;EI(收录号：20162902593806);WOS:【SCI-EXPANDED(收录号:WOS:000381619800014)】；

基金：This work was supported by the National Natural Science Foundation of China (21376082) and the Foundation of Shanghai Science and Technology Committee (14dz1200100).

语种：英文

外文关键词：Slag model; Numerical simulation; Gasification; Wall reaction

摘要：A comprehensive model with time limited wall reaction was developed for the simulation of complex gas particle molten slag three-phase reactions and flow processes in an entrained flow gasifier. Promotional conversion rate, wall reaction time and particle size/density evolution have been considered in the wall reaction model. In order to validate the proposed model, an industrial single swirling burner gasifier was simulated, and the gasifier performance, residual carbon ratio in the trapped particle and fly ash are compared with experimental measurements. The comparison results indicate that the proposed model has sufficient accuracy for entrained flow gasifier simulation. In a single swirling burner gasifier, approximately 55.4% of the coal particles fed from the swirling burner are trapped by the molten slag surface, and 22.5% of carbon in the trapped particles are converted during the wall reaction process. The detailed residence time of the trapped particle has been calculated; the average fly time of the particle before trapped is approximately 0.66 s; and the average wall reaction time on the membrane wall is approximately 3.55 s. (C) 2016 Elsevier Ltd. All rights reserved.