对置式水煤浆气化炉内燃烧气化过程的数值模拟  

Numerical simulation of combustion and gasification process in opposed coal water slurry gasifier

作　　者：常庆明[1] 洪守坤 张旭 CHANG Qing-ming;HONG Shou-kun;ZHANG Xu(Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China)

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081

出　　处：《天然气化工—C1化学与化工》2021年第2期87-92,共6页Natural Gas Chemical Industry

基　　金：国家自然基金资助项目(NO.51375353)。

摘　　要：以某煤处理量600 t/d对置式四喷嘴气化炉为研究对象,采用非均匀结构化网格,通过Fluent软件对其炉膛内水煤浆燃烧气化过程进行数值仿真。模拟计算了炉内温度场和气化产物浓度分布,并讨论了水煤浆浓度、喷射角度以及氧煤比等工艺参数对炉内气化燃烧过程的影响。结果表明,随喷射角度的增大和水煤浆浓度的升高,有效合成气含量有所增大;随氧煤比增大,有效合成气含量升高,并在氧煤比为1.3时达到最大值。Taking an opposed four-nozzle gasifier with a coal processing capacity of 600 t/d as the research object,the numerical simulation of the gasification combustion of coal-water slurry in the furnace was carried out through Fluent software with non-uniform structured grid.The temperature field and gasification product concentration distribution in the furnace was simulated,and the influences of process parameters such as coal water slurry concentration,injection angle and oxygen-to-coal ratio on the gasification combustion process in the furnace were discussed.The results show that with the increase of the injection angle and coal-water slurry concentration,the effective syngas content increases.With the oxygen-to-coal ratio increases,the effective syngas content increases,and reaches the maximum when the oxygen-to-coal ratio is 1.3.

关 键 词：对置式气化炉 数值模拟 水煤浆浓度 氧煤比 喷射角度 

分 类 号：TQ545[化学工程—煤化学工程]