天然气非催化部分氧化转化炉模拟  

Simulations Studies on Non-catalytic Partial Oxidation Reformer for Natural Gas

作　　者：徐月亭[1] 代正华[1] 李超[1] 刘海峰[1] 周志杰[1] 王辅臣[1] 

机构地区：[1]华东理工大学煤气化与能源化工教育部重点实验室,上海市煤气化工程研究中心,上海200237

出　　处：《高校化学工程学报》2014年第6期1249-1254,共6页Journal of Chemical Engineering of Chinese Universities

基　　金：973项目(2010CB227000);中央高校基本科研业务费(WB1213004)资助

摘　　要：O2/CH4比、操作压力和气化炉长度等因素对天然气非催化部分氧化转化炉的运行至关重要。研究建立了基于反应动力学的反应器网络模型和平衡模型。考察了O2/CH4摩尔比、压力与停留时间对合成气出口温度和组成的影响。结果表明,反应器网络模型的预测结果与工业运行数据吻合较好。随着O2/CH4摩尔比增大、压力的上升或停留时间的变长,两种模型模拟结果的差异逐渐变小。反应器网络模型模拟结果表明,O2/CH4摩尔比上升,合成气温度逐渐升高,出口甲烷含量逐渐降低,H2/CO摩尔比逐渐下降。在停留时间较短时,压力的上升会促进甲烷的转化,而在停留时间较长时,较高的压力会抑制甲烷的转化。The O2/CH4 ratio, pressure and residence time are the key operating factors of non-catalytic partial oxidation reformers for natural gas. In this work, the reactor network model with detailed chemical kinetics and equilibrium model were established and used to model an industrial reformer. The effects of O2/CH4 mole ratio, operating pressure and residence time on the performance of the reformer were studied. The results of reactor network model are in agreement with measured operating parameters. With the increasing of O2/CH4 mole ratio, operating pressure or residence time, the differences between the results from the reactor network model and the ones from equilibrium model become smaller. The results of reactor network model indicates that a higher O2/CH4 mole ratio will lead to a higher outlet temperature, a lower outlet CH4 concentration and a lower syngas H2/CO mole ratio. It was found that the elevated pressure can promote the conversion of CH4 when the gas residence time is relatively short, while the increasing of the operating pressure will lead a decreasing of CH4 conversion when the residence time is long enough.

关 键 词：天然气 非催化部分氧化 平衡模型 反应器网络 反应机理 

分 类 号：TQ031.7[化学工程] TQ646