电力科技与环保2025，Vol.41Issue(2)：281-293,13.DOI:10.19944/j.eptep.1674-8069.2025.02.011
超细水煤浆燃烧特性的数值模拟研究
Numerical simulation study on the combustion characteristics of ultra-fine coal water slurry
摘要
Abstract
[Objective]The clean and efficient utilization of coal resources is an essential requirement for constructing China's new energy system.As an important component of clean coal technology,coal water slurry holds significant advantages.Numerical simulation studies have been conducted on the combustion characteristics of ultra-fine coalwater slurry.[Methods]A three-dimensional model of the test platform was established,incorporating turbulence,radiation,combustion,and discrete phase models.The study analyzes how changes in operational parameters such as fuel concentration,particle size,atomization angle,total air volume,and the ratio of primary to secondary air affect the temperature and velocity fields of the test platform.[Results]The results indicate that an increase in fuel concentration raises the furnace temperature and accelerates combustion,leading to an earlier ignition point and shorter flames.changes in particle size have minimal impact on combustion.An increase in atomization angle significantly consolidates the high-temperature zones,showing a dispersal trend;an increase in total air volume gradually expands the ignition range of the flame and delays the ignition point.An increase in the ratio of primary to secondary air significantly skews the direction of the flame within the furnace.Thus,it is demonstrated that increasing fuel concentration and total air volume significantly enhances combustion efficiency,while appropriate adjustments to the atomization angle and air ratio help optimize the stability and efficiency of the combustion process.The numerical simulation has confirmed that the optimal combustion conditions should be selected with a fuel concentration of 50%,a fuel particle size of 30 μm,a atomization angle of 30°,a total air flow rate of 0.316 kg/s,and a primary-to-secondary air ratio of 3:7.[Conclusion]These findings are significant for enhancing combustion efficiency and advancing the industrial application of ultra-fine coal water slurry.关键词
超细水煤浆/燃烧试验台/燃烧特性/温度场/速度场/数值模拟Key words
ultrafine coal water slurry/combustion test platform/combustion characteristics/temperature field/velocity field/numerical simulation分类
能源与动力引用本文复制引用
原铎,王雨果,甄鹏,闫淑君,蔡晋,黄中..超细水煤浆燃烧特性的数值模拟研究[J].电力科技与环保,2025,41(2):281-293,13.基金项目
北京市杰出青年科学基金项目(JQ23010) （JQ23010）
国能准能集团有限责任公司科技项目(CEZB230302113) （CEZB230302113）
