贫燃再燃技术在管式加热炉上的应用前景

摘要

Reburning technology ,fuel-lean reburning technology and mechanism of NO x reduc-tion in reburning combustion were reviewed .The study also analyzed effect of several parameters such as mass ratio of reburn fuel to total fuel ,reburning region temperature ,equivalence ratio , residence time on reburning De-NOx efficiency .Taking into account the characteristics such as fluid in the tube and structure of petrochemical tube furnace ,reburning or fuel-lean reburning De-NOx technology could be applied to petrochemical tube furnace without increasing the furnace height by taking full advantage of the recirculation in furnace .%介绍了再燃、贫燃再燃脱硝技术以及再燃脱硝技术N Ox 的还原机理，分析了再燃比、再燃区温度、当量比和停留时间等参数对再燃脱硝效率的影响。结合管式加热炉结构和管内介质的特点，指出在不增加炉膛高度的情况下，应该充分利用炉内烟气回流，实现贫燃再燃脱硝技术，有效降低N Ox 排放。