一、為啥低負(fù)荷時(shí)氮氧化物總超標(biāo)？

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

　　當(dāng)發(fā)電機(jī) “小功率干活” 時(shí)，燃燒溫度和混合效率會(huì)下降，反而容易產(chǎn)生更多氮氧化物（NOx）。就像汽車怠速時(shí)尾氣更嗆人，這時(shí)必須用對(duì)方法才能既環(huán)保又省錢！

　　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、燃燒優(yōu)化：從源頭掐斷氮氧化物生成

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

　　1. 讓燃?xì)饪諝?“提前混勻”

　　1. Let the gas and air mix well in advance

　　怎么做：給燃燒器裝個(gè) “高效攪拌器”（比如多孔混合裝置），讓燃?xì)夂涂諝庠邳c(diǎn)火前就像調(diào)雞尾酒一樣充分混合。效果：某電廠用了這招，低負(fù)荷時(shí) NOx 從 150mg/m3 降到 80mg/m3，相當(dāng)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. 分階段 “喂” 空氣

　　2. Feed the air in stages

　　核心技巧：先給 70%-80% 的空氣讓燃料 “半燃燒”，降低局部溫度；再補(bǔ)空氣讓燃料燒干凈。類比：像煲湯先小火慢燉再大火收汁，既省氣又不 “糊鍋”（減少高溫生成 NOx）。實(shí)測(cè)：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. 換個(gè) “趁手” 的燃燒器

　　3. Replace the burner with a handy one

　　改造重點(diǎn)：把燃燒器噴口改成 “喇叭口” 形狀（漸擴(kuò)式），讓氣流更穩(wěn)；加個(gè) “旋轉(zhuǎn)功能”（旋流設(shè)計(jì)），讓燃料空氣混合更勻。結(jié)果：某機(jī)組改完后，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、后處理技術(shù)：給尾氣 “戴口罩”

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

　　1. 催化還原法（SCR）

　　1. Catalytic Reduction Method (SCR)

　　原理：用尿素或氨水當(dāng) “清潔劑”，在催化劑幫助下把 NOx 變成無害的氮?dú)夂退?。低?fù)荷對(duì)策：選低溫下也能干活的催化劑，給尾氣 “熱身”（加熱），讓 “清潔劑” 噴得更準(zhǔn)。厲害之處：能把 NOx 降到 50mg/m3 以下，比國標(biāo)還嚴(yán)！

　　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. 非催化還原法（SNCR）

　　2. Non catalytic reduction method (SNCR)

　　怎么用：在高溫區(qū)（850-1100℃）噴 “清潔劑”，直接和 NOx 反應(yīng)。低負(fù)荷技巧：多噴點(diǎn) “清潔劑”，找準(zhǔn)溫度合適的位置噴，配合燃燒優(yōu)化讓溫度更穩(wěn)定。效果：NOx 能降 40%-50%，適合預(yù)算有限的場(chǎng)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、燃料與系統(tǒng)優(yōu)化：省錢又減排

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

　　1. 給燃料 “提純”

　　1. Purify the fuel

　　操作：把天然氣里的含氮雜質(zhì)去掉（深度脫硫脫氮），就像炒菜少放鹽，從源頭減少 NOx 原料。數(shù)據(jù)：某電廠處理后，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. 讓尾氣 “循環(huán)再利用”（FGR 技術(shù)）

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

　　核心：把一部分尾氣 “回爐” 到燃燒室，降低燃燒溫度和氧氣濃度?？刂埔c(diǎn)：循環(huán) 10%-20% 的尾氣就行，太多會(huì)影響燃燒，太少?zèng)]效果。實(shí)測(cè)：NOx 從 120mg/m3 跌到 60mg/m3，相當(dāng)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. 裝個(gè) “智能大腦”

　　3. Install an "intelligent brain"

　　功能：用傳感器和電腦自動(dòng)監(jiān)控，根據(jù)負(fù)荷變化實(shí)時(shí)調(diào)參數(shù)（比如混合比、噴藥量）。好處：NOx 排放波動(dòng)范圍能縮小到 ±10mg/m3，再也不用人工反復(fù)調(diào)！

　　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!

　　本文由燃?xì)獍l(fā)電機(jī)友情奉獻(xiàn).更多有關(guān)的知識(shí)請(qǐng)點(diǎn)擊:http://www.hebsunpu.com我們將會(huì)對(duì)您提出的疑問進(jìn)行詳細(xì)的解答，歡迎您登錄網(wǎng)站留言.

　　This article is a friendly contribution from the analysis of gas generator sets For more information, please click: http://www.hebsunpu.com We will provide detailed answers to your questions. You are welcome to log in to our website and leave a message