针对工业有机固废非均匀燃烧导致料层局部高温的问题,设计了"风移变拱"固定床实验装置并提出模型化方法,研究了不同混烧方式工况下层状燃烧特征的差异,揭示了不同混烧方式的层状燃烧局部高温特征.通过构建包括燃料种类、掺混比和过量空气系数的局部高温表征模型,可在技术层面上为城市废弃物焚烧设施协同处理高热值工业废弃物提供分析判断手段和技术参考.
在锅炉燃烧系统中因为燃料的影响,在尾部排烟中会含有硫元素.排烟温度控制不合理会使烟气冷却为硫酸溶液,对锅炉的安全运行造成隐患.通过测量锅炉烟气酸露点来指导调节排烟温度,对提高锅炉的安全运行有重要作用.设计了一种锅炉酸露点测量装置,测得排烟酸露点,实现对锅炉安全稳定运行的指导.
Since the characteristics of furfural residue, such as high moisture, low calorific value, and easy slagging and ash deposition during combustion, a horizontal circulating fluidized bed boiler burning furfural residue was developed based on the furnace structure of "three beds with two returns". Besides, the operation strategy was proposed based on ash circulation, secondary air regulation, and bed material selection. During the operation, the temperature and pressure measured in the boiler remained stable, the oxygen content at the furnace outlet was maintained below 5%, and the emission of NO x , SO 2 , and particulate matter was ultra-low. The boiler shows excellent operation stability and economic and environmental protection performance, which will help furfural enterprises consume furfural residue by themselves, obtain continuous, stable, high-quality steam, and dispose of relevant waste as well as.
采用一种 14 组分 37 步简化机理模型、RNG k-ε湍流模型以及稳态层流小火焰(SLF)燃烧模型,研究了N2 稀释条件下组分H2/CO的比例对合成气燃烧特性的影响.数值模拟结果表明:当组分H2/CO的体积比从 3:7 变化至 7:3 时,合成气燃烧过程中生成的OH自由基浓度上升,燃烧位置向入口靠近;火焰燃烧峰值温度随H2/CO体积比的增大而下降,火焰峰值温度所在位置向燃料入口靠近;火焰传播速度随H2/CO体积比的增大而加快,燃烧反应在更短的距离和时间内完成.
