德士古气化炉内气体辐射的数值模拟研究  

Numerical Simulation of Gas Radiation in Texaco Gasifier

作　　者：李勇亮 董美蓉[1,2] 谭次洋 梁友才 陆继东 LI Yong-liang;DONG Mei-rong;TAN Ci-yang;LIANG You-cai;LU Ji-dong(School of Electric Power,South China University of Technology,Guangzhou Guangdong 510640,China;Guangdong Province Engineering Research Center of High Efficient and Low Pollution,Guangzhou Guangdong 510640,China)

机构地区：[1]华南理工大学电力学院,广东广州510640 [2]广东省能源高效低污染转化工程技术研究中心,广东广州510640

出　　处：《当代化工》2023年第1期209-214,共6页Contemporary Chemical Industry

基　　金：国家自然科学基金项目(项目编号:51976064)。

摘　　要：为了探究气体辐射对气化炉物理场的作用机制,采用数值模拟的方法,以灰气体加权和模型(WSGG)描述气体辐射特性,对比分析了加入气体辐射后辐射强度、温度分布以及气体组分体积分数分布的变化。结果表明:气体辐射在气化炉的辐射热流计算中占有很大一部分比例;在定热流边界条件的情况下,气体辐射模型对温度分布的影响主要是体现在射流区中下部;气体辐射的加入会使H_(2)与CO_(2)的反应朝正向进行,在一定程度上改善模拟结果的准确度和精确度。In order to explore the effect mechanism of gas radiation on the physical field of gasifier, numerical simulation method was adopted. The weighted-sum-gray-gas model(WSGG) was used to describe the radiation characteristics of gas, and the changes of radiation intensity, temperature field and component volume fraction were compared and analyzed. The results showed that gas radiation occupied a large proportion in the calculation of radiant heat flow of gasifier. In the case of constant heat flow boundary conditions, the effect of gas radiation model on temperature distribution was mainly reflected in the middle and lower part of the jet region. The addition of gas radiation made the reaction of H_(2)and CO_(2)go forward, which improved the accuracy and precision of simulation results to a certain extent.

关 键 词：气化炉 气体辐射 灰气体加权和模型 数值模拟 

分 类 号：TQ546[化学工程—煤化学工程]