基于拉丁超立方抽样的垃圾锅炉二次风配比模拟及优化  

Numerical Simulation and Optimization of Secondary Air Ratio of Waste Incineration Boiler Based on Latin Hypercube Sampling Method

作　　者：龚凌诸 黄志鸿 张自丽 陈小韩 孙加康 杨超群 杨祉聪 龙志强 GONG Lingzhu;HUANG Zhihong;ZHANG Zili;CHEN Xiaohan;SUN Jiakang;YANG Chaoqun;YANG Zhicong;LONG Zhiqiang(Energy Equipment and Energy Storage Security Research Institute,Fujian University of Technology,Fuzhou 350118,China;Fuzhou Green Chemical and Cleaner Production Industry Technology Innovation Center,Fuzhou 350118,China;Fujian Boiler and Pressure Vessel Inspection and Research Institute,Fuzhou 350008,China)

机构地区：[1]福建理工大学能源装备与储能安全研究所,福建福州350118 [2]福州市绿色化工与清洁生产行业技术创新中心,福建福州350118 [3]福建省锅炉压力容器检验研究院,福建福州350008

出　　处：《锅炉技术》2025年第2期14-22,共9页Boiler Technology

基　　金：福建省对外合作项目(202310028);福建省科技计划项目(2020Y0055)。

摘　　要：针对现有垃圾焚烧锅炉存在的过负荷问题,对福州市某台600t/d城市生活垃圾焚烧锅炉进行了100%和110%负荷的数值模拟,有效模拟了城市生活垃圾焚烧锅炉内温度场等分布情况,分析了过负荷对于垃圾焚烧锅炉的运行影响。利用拉丁超立抽样方法对二次风配比进行抽样;研究二次风配比对炉膛温度、速度矢量及NO_(x)浓度的影响。结果表明:焚烧炉处于110%工况运行时,炉内燃烧剧烈,温度增高,对水冷壁的冲蚀更加严重;当二次风配比OFA1:OFA2:SA1:SA2为45:71:80:54时,城市生活垃圾焚烧炉二次燃烧状况较好,烟气在炉膛出口温度较低,且在第一烟道分布均匀,改善了水冷壁受热不均的问题,第一烟道出口的NO,质量浓度为182.98mg/m^(2),相较于优化前的原始工况下降了5.84%。Aiming at the overload problem of the existing waste incinerators,this study carried out the numerical simulation of a 600 t/d urban solid waste incineration boiler in Fuzhou under 100% load and 11o%load respectively.In this research,the distribution of temperature field in the incinerator was effectively simulated,and the influences of the overload problem on the incinerator operation were analyzed as well.Besides,the influences of secondary air ratio on furnace temperature,velocity vector and NO_(x) concentration were studied by sampling method of Latin hypercube.The results show that when the incinerator is running at 110% load,the combustion in the furnace is intense,the temperature increases heavily and the erosion of the water wall is more serious.In addition,when the ratio of secondary air OFA1:OFA2:SA1:SA2 is 45:71:80:54,the secondary combustion of the waste incinerator is better and the flue gas temperature at the furnace outlet is generally lower.Moreover,the gas distribution in the first flue gas pass is uniform,which reduces the uneven heating of the water wall.At this time,the mass concentration of NOr at the first flue gas pass is 182.98 mg/m^(3),which is 5.84% lower than that before optimization.

关 键 词：垃圾焚烧锅炉 数值模拟 FLIC 二次风优化 NO_(x)浓度 

分 类 号：X705[环境科学与工程—环境工程]