沼气发电机组是必备的机器，其中Cat?（卡特）CG170系列机组具有较高的性价比优势：

A biogas generator set is an essential machine, among which Cat? The (Carter) CG170 series units have a high cost performance advantage:

高盈利能力：CG170系列机组发电效率高达44.2%。

High profitability: The CG170 series units have a power generation efficiency of up to 44.2%.

高稳定性:基于无气流燃烧和扩大机油箱延长了维护保养间隔; 每年运行时间高达8000小时或以上。

High stability: Based on no airflow combustion and expanding the oil tank, maintenance intervals are extended; The annual running time can reach 8000 hours or more.

最低润滑油消耗量：润滑油消耗率约为同等品牌机组的三分之一。

Minimum lubricating oil consumption: The lubricating oil consumption rate is about one-third of that of units of the same brand.

排放控制：高效清洁的燃烧满足所有通用排放要求。

Emission control: Efficient and clean combustion meets all universal emission requirements.

气体预处理及脱硫系统

Gas pretreatment and desulfurization system

气体预处理系统主要包含除湿、过滤和稳压装置，提供满足发动机启动和运行的气体。气体预处理系统是沼气发电机组必须配置的设备。

The gas pretreatment system mainly includes dehumidification, filtration, and stabilization devices, providing gas that meets the requirements of engine start and operation. The gas pretreatment system is a necessary equipment for the biogas generator set.

由于沼气中通常含有H?S气体，H?S气体具有高度腐蚀性，任何发动机对H?S均有一定的要求。当沼气中的H?S气体含量高于发动机要求时，一定要进行脱硫处理。

Due to the usual presence of H in biogas? S gas, H? S gas has high corrosiveness, and any engine is sensitive to H? S has certain requirements. When H in biogas? When the S gas content exceeds the engine requirements, desulfurization treatment must be carried out.

脱硫方法有两种：干法脱硫和湿法脱硫。对于高H?S含量气体（H?S含量在10000ppm以上）时，通常采用湿法脱硫。湿法脱硫可以采用不同催化剂：络合铁、PDS等。

There are two types of desulfurization methods: dry desulfurization and wet desulfurization. For high H? Wet desulfurization is usually used for gases with an S-content (H-S content above 10000ppm). Wet desulfurization can use different catalysts such as complex iron and PDS.

脱硝装置

Denitration device

沼气发电机组是长期运行的，且现有的环保法规越来越严格（对NOx的排放要求通常为100mg、80mg，甚至低至35mg。），脱硝装置成为必备的要素。目前卡特彼勒燃气发电机组有两种排放类型：250mg 和 500mg NOx。其工作原理是利用尿素溶液或氨水作为还原剂，在催化剂的作用下将烟气中的NOx 还原成N2排放在空气中，减少污染。

Biogas power generation units operate for a long time, and existing environmental regulations are becoming increasingly strict (NOx emission requirements are usually 100mg, 80mg, and even as low as 35mg), making denitrification devices an essential element. At present, Caterpillar gas generators have two types of emissions: 250mg and 500mg NOx. Its working principle is to use urea solution or ammonia water as a reducing agent, under the action of a catalyst, to reduce NOx in the flue gas to N2 and discharge it into the air, reducing pollution.