沼气发电机组是必备的机器，其中有很多发电机具有较高的性价比优势：高稳定性、最低润滑油消耗量、高效清洁的燃烧满足所有通用排放要求。

Biogas generator sets are essential machines, among which many generators have high cost-effectiveness advantages: high stability, minimum lubricant consumption, efficient and clean combustion that meets all general 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 pressure stabilization devices, providing gas that meets the requirements for engine start-up and operation. The gas pretreatment system is a necessary equipment for biogas generators.

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 presence of H2S gas in biogas, which is highly corrosive, any engine has certain requirements for H2S. When the content of H2S gas in biogas exceeds the requirements of the engine, 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 methods of desulfurization: dry desulfurization and wet desulfurization. For gases with high H2S content (H2S content above 10000ppm), wet desulfurization is usually used. Wet desulfurization can use different catalysts such as complexed iron, PDS, etc.

脱硝装置

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

配电设备

Power distribution equipment

无论是高压还是低压的沼气发电机组，配电设备必不可少，其电气系统通常包含：并网控制柜、并网开关柜、PT柜（发电机组额定电压为高压时需配置）、配电柜、动力电缆及电缆槽或沟、控制电缆及电缆槽或沟。

Whether it is a high voltage or low voltage biogas generator set, distribution equipment is essential. Its electrical system usually includes: grid control cabinet, grid switch cabinet, PT cabinet (required when the rated voltage of the generator set is high voltage), distribution cabinet, power cable and cable trough or trench, control cable and cable trough or trench.

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