文献类型：期刊文献

英文题名：Multi-dimensional modeling of non-catalydic partial oxidation of natural gas in a high pressure reformer

作者：Zhou, Xinwen[1];Chen, Caixia[1];Wang, Fuchen[1]

机构：[1]E China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China

年份：2010

卷号：35

期号：4

起止页码：1620

外文期刊名：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000275259800012)】；

语种：英文

外文关键词：Non-catalytic partial oxidation of methane; Industrial reformer; Simulation; Synthesis gas; Mixing; CFD

摘要：A three-dimensional simulation model for non-catalytic partial oxidation of natural gas in a high pressure reformer has been developed. in the model, the numerical methods and submodels conventionally used in turbulent reacting flows are used. The GRI-Mech 3.0 mechanism and a tabulated chemistry approach are applied to model the non-catalytic oxidation of natural gases under high pressures and temperatures. The reactions are assumed to be fast, hence only the equilibrium states of the multi-step reactions are read in an off-line generated chemistry table. This chemistry table has been created using the equilibrium solver EQUIL from the CHEMKIN II package, and the equilibrium values are functions of the initial mixture compositions and the temperatures at a constant pressure. A presumed PDF model is applied to simulate the interactions between turbulent mixing and the multi-step chemical reactions. Simulations have been performed for a commercial natural gas reformer at various O-2/CH4 and O-2/H2O ratios and pressures in order to investigate the effect of these parameters on the syngas yields. The results have provided some insights into the strategies of solving the hot-spot problem in industrial reformers. (C) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.