颗粒停留时间对福建无烟煤在CFB锅炉中燃尽的影响  

Influence of Particles' Lingering Time on the Burn-off Rate of Fujian Anthracite in CFB Boilers

作　　者：何宏舟[1] 杨翔翔 

机构地区：[1]集美大学能源与动力工程研究所,厦门361021 [2]黎明大学,泉州310027

出　　处：《动力工程》2007年第1期42-44,共3页Power Engineering

基　　金：福建省自然科学基金资助项目(编号E0510026)

摘　　要：讨论与细颗粒无烟煤焦在CFB锅炉燃烧室中停留时间有关的若干因素对燃尽的影响。指出燃烧室高度、炉膛烟气流速、分离器效率和飞灰回燃等是影响福建无烟煤在CFB锅炉中燃尽的重要因素。提高炉膛燃烧室高度、适当降低炉膛烟气流速、提高分离器分离效率、采用飞灰回燃等措施能有效地延长福建无烟煤细颗粒在CFB锅炉燃烧室中的停留时间,从而有利于福建无烟煤的燃尽。Factors related to the effect of lingering time of fine anthracite coke particles on the burn-off rate in CFB boiler＇s combustion chamber is being discussed, pointing out that the combustion chamber＇s height, the flue gas＇ flow velocity within the furnace, the seperator＇ s efficiency and reburning of fly ash are important factors that influence Fujian anthracite＇s burn-off rate in CFB boilers. Measures, such as raising the combustion chamber＇s height properly, reducing flue gas＇ velocity within the furnace, improving the separator＇ s efficiency and reburning of fly ash may .all effectively elongate the lingering time of fine anthracite particles and therewith beneficial by raising the burn-off rate of the coal. Figs 2, table 1 and refs 7.

关 键 词：动力机械工程 CFB锅炉 福建无烟煤 燃尽 

分 类 号：TK224.11[动力工程及工程热物理—动力机械及工程]