摘要
分析了Ｗ型火焰炉及四角切向燃烧煤粉锅炉燃用无烟煤的优缺点。研制成功了大速差射流型双通道通用煤粉主燃烧器及卫燃带敷设的新方法，从而克服了四角燃烧无烟煤锅炉的弱点。经过对我国最难燃的无烟煤──福建加福无烟煤（Ｖｄａｆ＝３％～５％）在福建永安火电厂４１０ｔ／ｈ锅炉中的工业性考核反焦作电厂６７０ｔ／ｈ锅炉燃用晋东南无烟煤（Ｖｄａｆ＝６％～１０％）的工业性考核后得出结论：采用这种新技术，四角燃烧炉与Ｗ型火焰炉一样能脱油稳定地、低负荷地燃烧无烟煤，从而突破了国际上普遍认为的当Ｖｄａｆ＜１３％时，只能用Ｗ型火焰炉不能用四角燃烧的禁区。
Abstract The advantages and disadvantages of using W type flame furnaces and four corner tangentially fired pulverized coal boilers for burning anthracite areanalyzed.A high velocity differential jet type dual channel principal pulverizedcoal general use burner and a new way of arranging the flame shielding zone hasbeen developed,wherewith the short comings of four corner firing when burninganthracite are overcome. According to industrial verification tests with China'smost unfavourable coal,Fujian Jafu anthracite (Vdaf =3%￣5% ),performed onFujian Yungan Power Plant's 410 t/h boiler and with South East Jin anthracite(Vdaf= 6% ￣10% )performed on Jiazuo Power Plant's 670 t/h boiler,the conclusion was drawn that by making use of this new technique, both four corner fired pulverized coal boilers as well as W type flame furnaces may not only get rid of oil but are also capable of burning anthracit stably at low loads and herewithgainsay the worldwide accepted point of view that for Vdaf<13% only W typeflame furnaces are practicable but not four corner fired furnaces.
出处
《动力工程》
CSCD
1995年第4期20-26,共7页
Power Engineering
