燃气发电机组由于其燃料适应性好，发电效率高，机组运行方式灵活等特点，广泛应用于天然气发电，生物沼气发电，垃圾填埋气发电等领域。在常见的几种燃气类型中，由于不同的燃气产生来源和工艺过程，燃气中会常常包含着多种杂质。下面就几种常见的杂质类型进行简要的分析。

Gas generator units are widely used in natural gas power generation, biogas power generation, landfill gas power generation and other fields due to their good fuel adaptability, high power generation efficiency, flexible unit operation mode and other characteristics. In several common types of fuel gas, due to different sources and processes of fuel gas, fuel gas often contains a variety of impurities. The following is a brief analysis of several common impurity types.

1、颗粒物

1. Particulate matter

粉尘等固体颗粒物对燃气发电机组的影响，主要在于造成过滤器堵塞、进气量不足和压力降低等。在发动机气缸内部会造成缸壁和活塞磨损，同时也会污染润滑油，进而造成其他部件如滑动轴承的磨损，影响机组的正常运行。

The impact of solid particles such as dust on gas turbine generator units mainly lies in filter blockage, insufficient air intake and pressure reduction. In the engine cylinder, the cylinder wall and piston will be worn, and at the same time, the lubricating oil will be polluted, which will cause the wear of other components, such as sliding bearings, and affect the normal operation of the unit.

、发动机燃气进气阀组自带的过滤器仅用于保护系统不受颗粒物损坏，不能作为工作负荷过滤器。用户应在燃气管路设置工作负荷过滤器，且过滤器在颗粒直径大于3μm时，低分离率须达到99.99%或以上。

The filter attached to the engine gas inlet valve group is only used to protect the system from particle damage, and cannot be used as the working load filter. The user shall set a working load filter in the gas pipeline, and the filter shall be set with a particle diameter greater than 3 μ M, the low separation rate must reach 99.99% or above.

2、硫

2. Sulfur

在生物沼气等燃气中常常含有硫化氢等含硫化合物，如果在气缸内燃烧则形成二氧化硫和三氧化硫。由于燃气中含有水分且燃气燃烧也将产生水分，含硫化合物溶于水形成氢硫酸、亚硫酸和硫酸，这些酸性物质会对发动机金属部件产生腐蚀。

Fuel gas such as biogas often contains sulfur compounds such as hydrogen sulfide, which will form sulfur dioxide and sulfur trioxide if burned in the cylinder. As the fuel gas contains water and the fuel gas combustion will also produce water, sulfur compounds dissolve in water to form hydrosulfuric acid, sulfite and sulfuric acid, which will corrode the metal parts of the engine.

燃气发电机组对于燃气含硫量的具体要求跟机组型号以及燃气甲烷浓度等都有关系，一般来说进入发动机的燃气中含硫总量应低于300mg/Nm3。此外，带预燃室的机型通常有额外的要求。如果有带催化剂的尾气处理设备，还需考虑催化剂对硫含量的要求。

The specific requirements for the sulfur content of the gas in the gas generator set are related to the unit model and the gas methane concentration. Generally, the total sulfur content in the gas entering the engine should be less than 300mg/Nm3. In addition, models with precombustion chambers usually have additional requirements. If there is tail gas treatment equipment with catalyst, the sulfur content requirements of catalyst shall also be considered.

3、油

3. Oil

由于不同的运行温度和热化学反应过程，生物质热解和气化过程中会产生成百上千种不同类别的焦油。通常，此类碳氢化合物在低温遇冷时凝结成液态，会堵塞进气系统、涡轮增压器叶片和中冷器等。对生物质热解气进行预处理后，对其中焦油的露点进行分析是一个行之有效的方法。

Due to different operating temperatures and thermochemical reaction processes, hundreds of different types of tar will be produced during biomass pyrolysis and gasification. Usually, such hydrocarbons will be condensed into liquid when they are cold at low temperature, which will block the intake system, turbocharger blades, intercoolers, etc. It is an effective method to analyze the dew point of tar after pretreatment of biomass pyrolysis gas.

这类杂质对发电机组带来的危害将逐渐累积，并对机组的运行效果，正常维护间隙甚至使用寿命产生非常深远的负面影响。因此，通过预处理方式去除或减少燃气中的杂质非常重要，且需按照燃气发电机组制造商的技术要求和建议来进行。更多相关内容就来我们网站http://www.huannengpower.com进行咨询！

The harm brought by such impurities to the generator set will gradually accumulate, and have a very far-reaching negative impact on the operating effect, normal maintenance clearance and even service life of the unit. Therefore, it is very important to remove or reduce impurities in the gas by pretreatment, and it should be carried out according to the technical requirements and recommendations of the gas generator set manufacturer. More relevant content will come to our website http://www.huannengpower.com Consult!