文献类型：期刊文献

英文题名：Numerical Simulation of Industrial Opposed Multiburner Coal-Water Slurry Entrained Flow Gasifier

作者：Sun, Zhonghua[1];Dai, Zhenghua[1];Zhou, Zhijie[1];Guo, Qinghua[1];Yu, Guangsuo[1]

机构：[1]E China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat, Shanghai 200237, Peoples R China

年份：2012

卷号：51

期号：6

起止页码：2560

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20120814789957);WOS:【SCI-EXPANDED(收录号:WOS:000300211800008)】；

基金：This work is financially supported by the National Key State Basic Research Development Program of China (973Program, Grant 2010CB227006), the National High Technology Research and Development of China (863 Program, Grant 2009AA04Z159), and the National Nature Science Foundation of China (Grant 20876048).

语种：英文

外文关键词：Numerical models - Oxygen

摘要：A comprehensive three-dimensional numerical model is developed for simulation of the industrial opposed multiburner (OMB) coal-water slurry (CWS) entrained flow gasifier. The CWS gasification process is divided into several submodels, including water evaporation, coal pyrolysis, and homogeneous and heterogeneous char reactions. The "effectiveness factor" method is used to extrapolate the intrinsic char reactivity data to industrial CWS gasifier conditions. Numerical simulations with the proposed models are performed on the industrial OMB gasifier, and the predicted temperature and gas compositions at the outlet of the gasifier are in good agreement with industrial operating data. The profiles of flow field, temperature, and gas composition in the gasifier are described. In addition, the effects of the slurry concentration and oxygen/coal ratio on the gasifier performance are also studied, which reveal that the lower oxygen/coal ratio or higher slurry concentration leads to higher cold gas efficiency, while the carbon conversion slightly changes about 99%.