System for controlling nitrogen oxide in coke-oven exhaust from source

The invention discloses a system for controlling a nitrogen oxide in coke-oven exhaust from the source. The system comprises a PLC control unit, a flame temperature monitoring unit, a flue gas component analysis unit, a furnace top observation hole pressure monitoring unit, a gas flow control unit, a coking end time judgement and analysis unit, a coke maturity judgement and analysis unit and a single combustion chamber control unit. Nox is controlled on the source, by means of a combustion control technology and technical means of controlling distribution of air amount and flue temperature, controlling combustion chamber pressure distribution and the like, generation of Nox is controlled, and the method is low in investment and has hardly any operation cost. 本发明公开了种从源头控制焦炉废气中氮氧化物的系统。该系统包括：PLC控制单元、火焰温度监测单元、烟气成分分析单元、炉顶看火孔压力监测单元、煤气流量控制单元、火落时间判断分析单元、焦炭成熟度判断分析单元及单燃烧室控制单元。在源头上控制NO，通过燃烧控制技术，控制空气量、火道温度的分布、控制燃烧室压力分布等技术手段，控制NO的生成，这种方法投入小，几乎没有运行成本。