鍋爐低氮燃燒器改造的注意事項有哪些？

      根據《中華人民共和國大氣污染防治法》、北京市《鍋爐大氣污染物排放標準》(DB11/139-2015)的規定，自2017年4月1日起，對燃氣鍋爐排放濃度超過80毫克/立方米的單位應處10—100萬罰款，情節嚴重的，責令停業、關閉。2017是“清煤降氮”的關鍵之年，今年越來越多的企業加入到鍋爐改造的大潮中，那么鍋爐低氮燃燒器改造的注意事項有哪些呢？

According to the law of the People's Republic of China on the prevention and control of atmospheric pollution, Beijing "boiler air pollutant emission standard" (DB11/139-2015), since April 1, 2017, the concentration of gas boiler emissions more than 80 mg/cubic meter of the unit should be about 10, 1 million fine, if the circumstances are serious, shall be ordered to shut, shut down. 2017 is the key year of "clean coal and reduce nitrogen". This year more and more enterprises are joining the trend of boiler reform.

（1）鍋爐低氮燃燒器改造注意事項一：調試之前的檢查

Note for boiler low nitrogen burner renovation 1: inspection before commissioning

查看低氮燃燒器的燃氣是否到位，燃氣管路的是否干凈通暢，閥門是否已開啟。低氮燃燒器有無管路泄露現象，管道安裝是否合理。從燃氣閥前管道放氣排空，以確保管路中無混合空氣，同時排空管應接出室外。

Check whether the gas of the low nitrogen burner is in place, whether the gas pipeline is clean and free, and whether the valve has been opened. Low nitrogen burners with or without pipeline leakage, pipeline installation is reasonable. Drain air from the pipe in front of the gas valve to ensure that there is no mixed air in the pipeline and the drain pipe should be outside.

（2）鍋爐低氮燃燒器改造注意事項二：燃燒穩定和燃燒的動態平衡

Attention to the reform of boiler low nitrogen burner two: combustion stability and dynamic balance

切記燃燒調整是低氮燃燒器一切調整的基礎，對于汽溫來說燃燒更是本質，不論在任何工況變化下只要保證燃燒穩定和燃燒的動態平衡，因為汽溫是煙氣發熱量與蒸汽吸熱量相平衡的標志，只要能維持這個動態平衡，汽溫就能保持穩定。

Remember that combustion adjustment is the basis of all low nitrogen burner adjustment, combustion is essential for steam temperature, under any condition change, no matter as long as the guarantee stability and combustion of dynamic balance, because the steam temperature is a sign of flue gas heat and steam heat absorption phase equilibrium, as long as you can to maintain the dynamic balance, steam temperature can remain stable.

（3）鍋爐低氮燃燒器改造注意事項三：鍋爐的火焰中心

Note for boiler low nitrogen burner renovation 3: boiler flame center

鍋爐火焰中心的高低也是影響汽溫高低的重要因素，在運行中汽溫高時可減小上排燃燒器煤量增加下排燃燒器煤量，反之亦然。低氮燃燒器在運行中還要注意磨煤機不同組合方式運行對汽溫的影響，下排組合煙溫水平低汽溫調節裕度大，而上排組合煙溫水平高造成汽溫調節裕度小易超溫，要根據情況及時加強吹灰和注意調整配風。

The height of the boiler flame center is also an important factor influencing the temperature of steam. When the temperature of steam is high, the amount of coal in the upper exhauster can be reduced and the amount of coal in the lower burner can be increased, and vice versa. Also note in the operation of the low nitrogen burner in coal mill run different combinations of the influence of steam temperature, discharge low level of combined smoke temperature steam temperature regulation margin, and combination on the smoke temperature caused high steam temperature regulating margin small yi chao wen, according to the situation in a timely manner to strengthen blowing and pay attention to adjust the air distribution.

由于鍋爐低氮燃燒器在市場上運營改造的時間短，對問題的認識還不充分，對處理問題的經驗還不足，為緩解燃煤發電廠的環保壓力，降低氮的減排技術還需進一步研究和發展，選擇值得相信的低氮燃燒器尤其重要。更為重要的是在新的減排技術和環保設施應用后產生的問題處理能力要進一步提升，為燃煤發電廠的可持續發展爭取更大的環保效益。

Nitrogen burner on the market because of the low boiler operating time is short of, understanding of the problem is not enough, but not enough experience to deal with problems, coal-fired power plants to alleviate environmental pressure, reduce nitrogen emissions technology still need further research and development, choose low nitrogen burner that is worth of trust is particularly important. More importantly, after the application of new emission reduction technologies and environmental protection facilities, the capacity to deal with problems will be further improved, so as to achieve greater environmental benefits for the sustainable development of coal-fired power plants.