【摘要】：介紹了燃煤鍋爐NO_x的生成機理和低氮燃燒技術(shù)。對經(jīng)低氮燃燒技術(shù)改造的鍋爐進行了低氮燃燒和熱效率優(yōu)化調(diào)整試驗,分析了不同工況下鍋爐熱效率和NO_x排放情況。結(jié)果表明:鍋爐低氮燃燒器改造后,爐膛出口氧含量為3.5%~4.0%,燃盡風門開度40%~50%,上下層二次風門開度85%,中層二次風門開度30%,下層二次風門開度65%,采用"束腰"型配風方式工況下,鍋爐熱效率達到91.83%,NO_x排放濃度為431 mg/m~3,可以較好地平衡NO_x排放與鍋爐熱效率之間的關(guān)系,有利于鍋爐優(yōu)化運行。
[Abstract]:The formation mechanism and low nitrogen combustion technology of NO_x in coal-fired boiler are introduced. The optimization experiment of low nitrogen combustion and thermal efficiency was carried out for the boiler reformed by low nitrogen combustion technology, and the thermal efficiency and NO_x emission of the boiler under different working conditions were analyzed. The results show that the furnace outlet oxygen content is 3.5% 鈮，

本文編號：2528695