低氮燃燒器選擇考慮的主要參數

自2017年，發布的鍋爐氮氧化物排放的標準后要求新建的鍋爐氮氧化物排放低于30毫克,在用的鍋爐氮氧化物排放低于80毫克.對于目前市場上大部分的在用燃氣鍋爐業主來說,意味著必須更換成低氮燃燒器,才能滿足排放要求.那么低氮燃燒器選擇考慮的重要參數有哪些呢？

 since 2017, issued after the boiler nox emissions standards for new boiler nox emissions below 30 mg, in boiler nox emission is less than 80 mg. For most in use gas boiler owners on the market at present, means must be replaced as low nitrogen burner, in order to meet the emission requirements. So low nitrogen burner choose to consider what are the important parameters?

NOx排放

NOx emissions

必須滿足國家和地方的環保排放要求，在滿足要求的前提下，從企業的社會責任角度出發，盡量應該選擇NOx排放更低的設備；

It is necessary to meet the requirements of national and local environmental protection emissions. On the premise of meeting the requirements, from the perspective of corporate social responsibility, the equipment with lower NOx emissions should be selected as far as possible.

尾氧含量

The tail oxygen content

為了達到充分燃燒的極限過?？諝庀禂禐榇蠹s1.1,對應的理論尾氧含量為大約2%.更高的尾氧含量通常意味著燃燒器效率的降低。理想的燃燒器最好尾氧含量可以控制在3%以內；市場上表面燃燒的燃燒器的尾氧含量通常在7%左右，相對于3%的尾氧含量，意味著產生相同的熱量，需要多耗費大約6~8%的天然氣。對于常年運轉或者設備長期在較高負荷運轉，天然氣消耗量比較大的業主，選擇一款尾氧含量低的燃燒器對于降低運行成本至關重要。

In order to reach the maximum excess air coefficient of full combustion, which is about 1.1, the theoretical tail oxygen content is about 2%. A higher tail oxygen content usually means a reduction in burner efficiency. The optimal tail oxygen content of the ideal burner can be controlled within 3%. The tail-oxygen content of combustion burners on the market's surface is usually around 7%, which means the same amount of heat is produced, compared with 3% of tail-oxygen content, which requires about 6-8% more natural gas to be consumed. For the owners who operate all year round or whose equipment is under high load for a long time and whose natural gas consumption is relatively high, it is very important to select a burner with low tail oxygen content to reduce the operating cost.

可調比

Adjustable than

采用了電子比例調節的低氮燃燒器通常應該具備至少５：１以上的高可調比。更低的可調比意味著實際運行過程中更多的ON/Off啟停，同時也意味著更多的天然氣消耗。除非是負荷常年在一個比較小的穩定區間的鍋爐，選擇一個高可調比的燃燒器對于降低天然氣的消耗，降低運行成本，延長設備的使用壽命非常重要。

Low nitrogen burners with electronic proportional regulation should usually have a high adjustable ratio of at least 5 to 1. A lower tunable ratio means more ON/Off stops during the actual operation and more gas consumption. Unless it's stable load all the year round in a smaller range of boiler, choose a high adjustable ratio of burner for reducing the consumption of natural gas, reduce running cost, prolong the service life of equipment is very important.