工业尾气种类繁多，不同气源的成分、热值、特性差异极大。不是一台发电机能“通吃”所有尾气。这篇按气源分类，讲透不同场景的选型要点。

There are many types of industrial exhaust gases, and the composition, calorific value, and characteristics of different gas sources vary greatly. Not one generator can 'eat' all the exhaust gases. This article categorizes by gas source and explains the key selection points for different scenarios.

含氢尾气（焦炉煤气、化工驰放气）

Hydrogen containing tail gas (coke oven gas, chemical exhaust gas)

气源特点：氢气含量高（30%~100%），热值相对较低，易燃易爆，回火和爆震风险大。

Gas source characteristics: high hydrogen content (30%~100%), relatively low calorific value, flammable and explosive, high risk of tempering and detonation.

发电技术要求：

Power generation technology requirements:

进气隔离技术：燃气和空气在进入气缸后才混合，进气管内没有混合燃气，杜绝回火放炮

Air intake isolation technology: Gas and air are mixed only after entering the cylinder, and there is no mixed gas in the intake pipe to prevent backfire and blasting

纯空气扫气技术：用纯空气对燃烧室扫气，避免未燃混合气进入排气管引发爆燃，同时减少燃气损失，提高利用效率

Pure air scavenging technology: using pure air to sweep the combustion chamber to prevent unburned mixture from entering the exhaust pipe and causing detonation, while reducing gas loss and improving utilization efficiency

抗爆震技术：采用大能量点火系统、降低压缩比、中冷技术和空燃比自动控制，抑制氢气爆震

Anti knock technology: using high-energy ignition system, reducing compression ratio, intercooler technology, and automatic control of air-fuel ratio to suppress hydrogen detonation

1000r/min低转速：相对1500r/min高速机，机械冲击更小，寿命更长，配件消耗更低

1000r/min low-speed: Compared to 1500r/min high-speed machines, it has less mechanical impact, longer lifespan, and lower accessory consumption

安全配套：发电机房须安装轴流风机强制通风，配置可燃气体、有毒气体报警装置并与风机联动。

Safety support: The generator room must be equipped with axial flow fans for forced ventilation, combustible gas and toxic gas alarm devices, and linked with the fans.

低氢尾气（高炉煤气、兰炭气）

Low hydrogen tail gas (blast furnace gas, blue coke gas)

气源特点：氢气含量低（<30%），其他可燃成分（CO等）占比较高，热值极低。

Gas source characteristics: low hydrogen content (<30%), high proportion of other combustible components (CO, etc.), extremely low calorific value.

发电技术要求：适配低氢燃气的专用机型，通过空燃比优化和进气系统调整，在极低热值条件下维持稳定燃烧。自然吸气机型在此类场景中适应性更好——对进气压力要求低（>2kPa即可），对燃气中杂质容忍度高。

Power generation technology requirements: Suitable for specialized models of low hydrogen gas, maintain stable combustion under extremely low calorific value conditions through air-fuel ratio optimization and intake system adjustment. Natural aspirated models have better adaptability in such scenarios - they require low intake pressure (>2kPa is sufficient) and have a high tolerance for impurities in the gas.

热破坏法处理有机废气（VOCs）

Thermal destruction method for treating organic waste gas (VOCs)

对于含VOCs的工业尾气，发电机组同时扮演“废气处理装置”角色。采用热破坏法——将有机废气在高温下氧化分解为CO?和H?O，释放的热能驱动发电。这类机组的优势是：处理效率和发电效率同步实现，不产生NOx等二次污染物。

For industrial exhaust gases containing VOCs, the generator set also plays the role of a "waste gas treatment device". Using thermal decomposition method - oxidizing and decomposing organic waste gas into CO? And H? O at high temperature, the released heat energy drives power generation. The advantage of this type of unit is that it achieves synchronous processing efficiency and power generation efficiency, without producing secondary pollutants such as NOx.

选型核心四问

Four core questions for selection

气源组分是什么？ 氢含量、CO含量、甲烷含量直接影响燃气的燃烧特性和安全风险等级。拿到完整的气体组分分析报告是选型的第一步。

What are the components of the gas source? The hydrogen content, CO content, and methane content directly affect the combustion characteristics and safety risk level of gas. Obtaining a complete gas composition analysis report is the first step in selection.

气源压力与流量是否稳定？ 波动幅度决定是否需要增压设备或缓冲罐。

Is the pressure and flow rate of the gas source stable? The fluctuation amplitude determines whether pressurization equipment or buffer tanks are needed.

场地条件是否满足安全要求？ 厂房通风、燃气报警、消防设施缺一不可。氢气比空气轻得多，扩散性好，通风良好时安全性甚至优于天然气。

Do the site conditions meet safety requirements? Ventilation, gas alarm, and fire-fighting facilities are indispensable in the factory building. Hydrogen is much lighter than air, has good diffusion, and is even safer than natural gas when well ventilated.

是要“并网”还是“孤岛运行”？ 决定是否需要并网柜和相关审批手续。

Should we "connect to the grid" or "operate in isolation"? Determine whether grid connected cabinets and related approval procedures are required.

结语

Conclusion

工业尾气发电没有“万能机”。选型的关键不是“哪家设备好”，而是“哪家设备适配你的气”。先搞清楚气源成分，再看技术方案能否解决对应风险——这才是工业尾气发电项目的正确打开方式。

There is no universal machine for industrial exhaust power generation. The key to selection is not 'which device is good', but 'which device is suitable for your gas'. First, clarify the composition of the gas source, and then see if the technical solution can solve the corresponding risks - this is the correct way to open an industrial exhaust power generation project.

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