为了掌握鞍钢焦炉烟气污染物排放特性，提高焦炉燃料燃烧效率，节省煤气消耗， 采用MGA5型红外烟气分析仪对鞍钢12座大容积焦炉的废烟气组成成分进行定量测定。结果表明，目前的JN型焦炉废烟气取样点处氧体积分数普遍偏高，平均为4.63%，使得废烟气带走的热量较多，从而导致炼焦耗热量和生产成本增加。根据焦炉燃料及废烟气流经途径，提出焦炉废烟气多点测量技术，在保证燃料充分燃烧的情况下，空气过剩系数明显降低，最大限度地降低了废烟气带走的热量，减少了焦炉废烟气中氮氧化物的排放。此外，采用多点测量技术，还能够及时监控蓄热室封墙的窜漏情况，有利于提高炼焦生产的操作管理水平。

In order to master the flue gas pollutants emission characteristic of Ansteel’s coke oven，increase the combustion efficiency，and save the fuel usage of the fuel，the compositions of waste flue gas from12 large-volume coke ovens in Ansteel were quantitatively determined by MGA5 infrared flue gas analyzer. The results show that average oxygen content at the measured points of the JN type coke oven is generally high （4.63%）. The waste gas takes more heat away， which leads to more coking heat consumption and production cost. According to flow through the way of the coke oven fuel and waste gas， multi-point measurement technology of coke oven waste flue gas is put forward， ensuring that fuel is fully combusted， which also reduces air excess coefficient， minimizes the waste away from the heat， and decreases the emission of nitrogen oxides from the coke oven waste flue gas. In addition， the use of multi-point measurement technology also monitors the wall leakage of the regenerative chamber timely， which is conducive to improving the level of operation and management of coking production.