基于FLUENT的高炉内煤粉燃烧效率模拟与优化研究  

NUMERICAL SIMULATION AND OPTIMIZATION OF COAL COMBUSTION EFFICIENCY IN BLAST FURNACE BASED ON FLUENT

作　　者：邵欣 邢国麟 韩思奇 武晋 张灵旺 SHAO Xin;XING Guo-lin;HAN Si-qi;WU Jin;ZHANG Ling-wang(Intelligent Manufacturing College, Tianjin Sino-German University of Applied Sciences, Tianjin 300350, China;Mechanical Engineering College, Tianjin Sino-German University of Applied Sciences, Tianjin 300350, China)

机构地区：[1]天津中德应用技术大学智能制造学院,天津300350 [2]天津中德应用技术大学机械工程学院,天津300350

出　　处：《环境工程》2018年第6期110-115,共6页Environmental Engineering

基　　金：2016年天津市自然科学基金项目(2017JCYBJC16800);国家重大科学仪器设备开发专项(2012YQ06016501);天津中德应用技术大学科技培育重点项目(zdkt2016-001)天津中德应用技术大学自制实验实训设备重点项目(ZDZY2016-03C);天津市科技计划项目(17JCTPJC48900)

摘　　要：基于高炉燃烧场内的固、气两相流运动特点,建立了煤粉燃烧物理模型。根据工厂中现有的高炉相关数据,采用FLUENT软件模拟燃烧过程,分析了煤粉燃尽率与煤粉粒径、煤粉挥发分含量、鼓风含氧量、喷煤量以及鼓风温度等参数之间的关系。通过仿真实验研究了高炉内气固流动和煤粉燃烧的基本行为和特点,模拟结果表明,煤粉燃烧的最佳工况为:煤粉粒径减少至40~50μm,煤粉挥发分含量增加至30%~35%,鼓风温度保持在1 800 K,煤粉喷吹量在300~400 kg/h范围内。Based on the characteristics of solid-gas two-phase flow in blast furnace combustion field,a physical model of pulverized coal combustion was established. According to the parameters of blast furnace in the factory,with the assistnace of FLUENT software,influences on the burnout of coal caused by the change of operating parameters such as particle diameter,VM content of coals,oxygen enrichment,coal injection rates and blast temperature were investigated. The numerical simulation revealed furnace characteristics of gas-particle flow and coal combustion. The result indicated that the best conditions were as follows： The particle diameter was reduced to 40 ～ 50 μm,the VM content of coals was increased to 30%～ 35%,the blast temperature was kept at 1 800 K,the coal injection rates changed from 300 ～ 400 kg/h.

关 键 词：煤粉 数值模拟 燃烧特性 燃尽率 

分 类 号：X701[环境科学与工程—环境工程]