摘要
针对一种典型的600 MW亚临界前后墙对冲燃烧锅炉,在现场试验的基础上系统研究了煤粉含量、一次风速和负荷等因素对煤粉着火特性的影响规律。结果表明:试验所采用的宏燃煤属于易着火、易燃尽的煤种。随着煤粉含量升高,D层和E层燃烧器着火距离缩短,更有利于煤粉着火和燃烧。一次风速降低时,着火距离缩短,随着风速的提高,着火距离先增大后趋于平缓。保持煤粉含量和一次风速不变,随着锅炉负荷升高,着火距离呈现明显的下降趋势。
Aiming at a typical 600 MW subcritical front and rear wall opposed-fired boiler,the influence of pulverized coal concentration,primary air speed and load on the ignition characteristics of pulverized coal was systematically studied on the basis of field tests.The results show that the Hongran coal used in the test is easy to catch fire and easy to burn out.As the pulverized coal concentration increases,the ignition distances of the D-layer and E-layer burners are shortened,which is more conducive to the ignition and combustion of pulverized coal.When the wind speed becomes lower once,the ignition distance is shortened.As the air speed increases,the ignition distance first becomes larger,and then becomes gentle.Keeping the pulverized coal concentration and primary wind speed unchanged,as the boiler load increases,the ignition distance shows an obvious downward trend.
作者
郭秋实
陈安合
王路路
张达
任福虎
王欢
Guo Qiushi;Chen Anhe;Wang Lulu;Zhang Da;Ren Fuhu;Wang Huan(Inner Mongolia Datang International Tuoketuo Power Generation Co., Ltd., Hohhot 010200, China;North China Electric Power Test and Research Institute, China Datang Corporation Scienceand Technology General Research Institute Co., Ltd., Beijing 100040, China)
出处
《发电设备》
2021年第5期305-308,共4页
Power Equipment
关键词
对冲锅炉
旋流燃烧器
煤粉
着火距离
opposed boiler
swirl burner
pulverized coal
ignition distance
