文献类型：期刊文献

英文题名：Modelling of slag flow and prediction of corrosion state of refractory bricks in an entrained-flow gasifier

作者：Lin, Kuo[1,2];Shen, Zhongjie[1,2];Liang, Qinfeng[1,2];Xu, Jianliang[1,2];Liu, Haifeng[1,2]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, POB 272, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Clean Coal Technol, POB 272, Shanghai 200237, Peoples R China

年份：2020

卷号：275

外文期刊名：FUEL

收录：;EI(收录号：20231313812896);WOS:【SCI-EXPANDED(收录号:WOS:000535710000070)】；

基金：This work was supported by the National Key R&D Program of China (2018YFC0808500), and National Natural Science Foundation of China (21878082).

语种：英文

外文关键词：Gasification; Refractory brick; Corrosion model; External diffusion; Numerical simulation

摘要：The corrosion rate of refractory brick is a key factor for long-term and stable operation of a gasifier. In situ measurement of refractory brick corrosion was always a challenging topic due to the extreme temperature and pressure in the gasifier. In this paper, numerical simulations were adopted to accurately predict the corrosion depth of the refractory brick. Models for slag flow and refractory brick heat transfer were built, and various models of refractory brick corrosion rate were derived in detail. Heat transfer and brick corrosion models were validated with available industry data and the prediction accuracies of the different models were compared and discussed. Results showed that the external diffusion model could accurately predict the corrosion state, and the correlation coefficient with industry data was 0.998. The slag shear rate on the surface of the refractory brick was a key control parameter for corrosion, especially for a top single-burner down-flow gasifier.