立式旋风燃烧液态排渣锅炉沾污特性热态试验研究  

Experimental Study on Slagging and Fouling Characteristics During Combustion in the Slag-tap Vertical Cyclone Boiler

作　　者：张斯卓 袁益超[1] 张翔[2] 闫凯[2] ZHANG Sizhuo;YUAN Yichao;ZHANG Xiang;YAN Kai(Shanghai Key Laboratory of Multiphase Flow and Heat Transfer for Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Boiler Works Co.,Ltd.,Shanghai 200245,China)

机构地区：[1]上海理工大学上海市动力工程多相流动与传热重点实验室,上海200093 [2]上海锅炉厂有限公司,上海200245

出　　处：《动力工程学报》2023年第5期550-557,630,共9页Journal of Chinese Society of Power Engineering

基　　金：国家重点研发计划资助项目(2018YFB0604100)。

摘　　要：针对采用液态排渣锅炉解决易结渣煤种的清洁高效利用问题,必须掌握液态排渣锅炉热力计算方法及其受热面的沾污特性。根据某75 t/h立式旋风燃烧液态排渣锅炉不同工况下的热态试验结果,结合苏联73标准中双炉室液态排渣锅炉传热计算方法,对立式旋风燃烧液态排渣锅炉受热面沾污特性进行了研究,获得了液态排渣方式对过热器、省煤器和空气预热器受热面沾污特性的影响规律。结果表明:苏联73标准中双炉室液态排渣锅炉“ВТИ法”较“ЦКТИ法”能较好地反映双炉室液态排渣锅炉炉膛的实际运行情况,其对于炉膛的传热特性及沾污特性的处理方法是合理的;高、低温过热器热有效系数的修正系数分别为1.19~1.25和0.63~0.67,随着锅炉负荷的增大而增大;高、低温省煤器污染系数的修正系数分别为5.00~5.80和6.00~6.90,随着锅炉负荷的增大而减小;高、低温空气预热器利用系数的修正系数分别为0.53~0.56和0.80~0.85,随着锅炉负荷的增大而增大。In order to realize the efficient and clean utilization of slagging coal with the slag-tap boiler,it is necessary to accurately master the thermal calculation method for the slag-tap boiler and its slagging and fouling characteristics of heat transfer surfaces.Based on the hot-state experimental results for a 75 t/h slag-tap vertical cyclone boiler under different operating conditions and the thermal calculation method of the slag-tap boiler with double furnaces in the 1973 edition of the standard of thermal calculation for boiler utilities of USSR(1973 Ed.of USSR),the slagging and fouling characteristics of heat transfer surfaces of the slag-tap vertical cyclone boiler were studied.The fouling characteristics of superheaters,economizers and air heaters in the slag-tap vertical cyclone boiler were obtained.Results show that methodВТИin 1973 Ed.of USSR is more consistent with the performance of the furnaces in the slag-tap boiler with double furnaces than methodЦКТИ.The modification coefficients of thermal effectiveness factor of high and low temperature superheater are 1.19~1.25 and 0.63~0.67 respectively.The coefficients increase with the increase of the boiler load.The modification coefficients of fouling factor of high and low temperature economizer are 5.00~5.80 and 6.00~6.90 respectively.The coefficients decrease with the increase of the boiler load.The modification coefficients of utilization factor of high and low temperature air heater are 0.53~0.56 and 0.80~0.85 respectively.The coefficients increase with the increase of the boiler load.

关 键 词：旋风燃烧 液态排渣锅炉 热力计算 沾污 

分 类 号：TK229.6[动力工程及工程热物理—动力机械及工程]