一、为啥低负荷时氮氧化物总超标？

　　1、 Why do nitrogen oxides always exceed the standard at low loads 

　　当发电机 “小功率干活” 时，燃烧温度和混合效率会下降，反而容易产生更多氮氧化物（NOx）。就像汽车怠速时尾气更呛人，这时必须用对方法才能既环保又省钱！

　　When the generator operates at low power, the combustion temperature and mixing efficiency will decrease, and it is easier to produce more nitrogen oxides (NOx). Just like when the exhaust of a car is more pungent at idle, the right method must be used to be both environmentally friendly and cost-effective! 

　　二、燃烧优化：从源头掐断氮氧化物生成

　　2、 Combustion optimization: cutting off the generation of nitrogen oxides from the source

　　1. 让燃气空气 “提前混匀”

　　1. Let the gas and air mix well in advance

　　怎么做：给燃烧器装个 “高效搅拌器”（比如多孔混合装置），让燃气和空气在点火前就像调鸡尾酒一样充分混合。效果：某电厂用了这招，低负荷时 NOx 从 150mg/m³ 降到 80mg/m³，相当于砍掉快一半！

　　How to do it: Install an "efficient mixer" (such as a porous mixing device) on the burner to thoroughly mix the gas and air like a cocktail before ignition. Effect: A certain power plant used this trick to reduce NOx from 150mg/m³  to 80mg/m  at low loads, which is equivalent to cutting it in half! 

　　2. 分阶段 “喂” 空气

　　2. Feed the air in stages

　　核心技巧：先给 70%-80% 的空气让燃料 “半燃烧”，降低局部温度；再补空气让燃料烧干净。类比：像煲汤先小火慢炖再大火收汁，既省气又不 “糊锅”（减少高温生成 NOx）。实测：NOx 排放直降 30%-40%！

　　Core technique: First, give 70% -80% of the air to allow the fuel to "semi burn" and reduce the local temperature; Add more air to make the fuel burn clean. Analogy: For example, when making soup, first simmer it slowly over low heat and then collect the juice over high heat, it saves gas and does not "burn the pot" (reducing the generation of NOx at high temperatures). Actual measurement: NOx emissions have decreased by 30% -40%! 

　　3. 换个 “趁手” 的燃烧器

　　3. Replace the burner with a handy one

　　改造重点：把燃烧器喷口改成 “喇叭口” 形状（渐扩式），让气流更稳；加个 “旋转功能”（旋流设计），让燃料空气混合更匀。结果：某机组改完后，NOx 又少了 20%-30%！

　　Key points of renovation: Change the burner nozzle to a "horn mouth" shape (gradually expanding) to make the airflow more stable; Add a 'rotation function' (swirl design) to make the fuel air mix more evenly. Result: After the modification of a certain unit, NOx decreased by 20% -30% again! 

　　三、后处理技术：给尾气 “戴口罩”

　　3、 Post treatment technology: wearing a mask on exhaust gas

　　1. 催化还原法（SCR）

　　1. Catalytic Reduction Method (SCR)

　　原理：用尿素或氨水当 “清洁剂”，在催化剂帮助下把 NOx 变成无害的氮气和水。低负荷对策：选低温下也能干活的催化剂，给尾气 “热身”（加热），让 “清洁剂” 喷得更准。厉害之处：能把 NOx 降到 50mg/m³ 以下，比国标还严！

　　Principle: Use urea or ammonia water as a "cleaning agent" to convert NOx into harmless nitrogen and water with the help of a catalyst. Low load strategy: Choose a catalyst that can work even at low temperatures to warm up the exhaust gas and spray the cleaning agent more accurately. Impressive feature: It can reduce NOx to below 50mg/m³ , even stricter than the national standard! 

　　2. 非催化还原法（SNCR）

　　2. Non catalytic reduction method (SNCR)

　　怎么用：在高温区（850-1100℃）喷 “清洁剂”，直接和 NOx 反应。低负荷技巧：多喷点 “清洁剂”，找准温度合适的位置喷，配合燃烧优化让温度更稳定。效果：NOx 能降 40%-50%，适合预算有限的场景。

　　How to use: Spray "cleaner" in high temperature zone (850-1100 ℃) to directly react with NOx. Low load technique: Spray more "cleaning agents", find the appropriate temperature position to spray, and optimize combustion to make the temperature more stable. Effect: NOx can be reduced by 40% -50%, suitable for budget limited scenarios. 

　　四、燃料与系统优化：省钱又减排

　　4、 Fuel and system optimization: saving money and reducing emissions

　　1. 给燃料 “提纯”

　　1. Purify the fuel

　　操作：把天然气里的含氮杂质去掉（深度脱硫脱氮），就像炒菜少放盐，从源头减少 NOx 原料。数据：某电厂处理后，NOx 直接降了 10%-20%！

　　Operation: Remove nitrogen impurities from natural gas (deep desulfurization and denitrification), just like adding less salt to stir fry, reducing NOx raw materials from the source. Data: After treatment at a certain power plant, NOx was directly reduced by 10% -20%! 

　　2. 让尾气 “循环再利用”（FGR 技术）

　　2. Make exhaust gas "recycled and reused" (FGR technology)

　　核心：把一部分尾气 “回炉” 到燃烧室，降低燃烧温度和氧气浓度。控制要点：循环 10%-20% 的尾气就行，太多会影响燃烧，太少没效果。实测：NOx 从 120mg/m³ 跌到 60mg/m³，相当于砍半！

　　Core: Return a portion of the exhaust gas to the combustion chamber to reduce combustion temperature and oxygen concentration. Control points: Cycle 10% -20% of the exhaust gas, too much will affect combustion, too little will have no effect. Actual measurement: NOx has dropped from 120mg/m³  to 60mg/m³ , which is equivalent to cutting it in half! 

　　3. 装个 “智能大脑”

　　3. Install an "intelligent brain"

　　功能：用传感器和电脑自动监控，根据负荷变化实时调参数（比如混合比、喷药量）。好处：NOx 排放波动范围能缩小到 ±10mg/m³，再也不用人工反复调！

　　Function: Use sensors and computers to automatically monitor and adjust parameters in real-time based on changes in load, such as mixing ratio and spraying amount. Benefit: The fluctuation range of NOx emissions can be reduced to ± 10mg/m³ , eliminating the need for manual adjustment!

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