沼氣中的硫化氫和水形成弱酸，會腐蝕發動機的管路和金屬零件，尤其是銅鋁零件。因此，管道、中冷器、渦輪增壓器和活塞部件，如油漆、瓷器等。應該氮化保護。此外，由于硫化氫燃燒的產物二氧化硫的耐腐蝕性較好，燃燒室和排氣管的周邊部分應考慮防腐措施。

Hydrogen sulfide and water in biogas form weak acids, which can corrode engine pipelines and metal parts, especially copper and aluminum parts. Therefore, pipelines, intercoolers, turbochargers, and piston components such as paint, porcelain, etc. It should be nitrided for protection. In addition, due to the good corrosion resistance of sulfur dioxide, the product of hydrogen sulfide combustion, anti-corrosion measures should be considered for the surrounding parts of the combustion chamber and exhaust pipe.

有時，沼氣發動機組在不使用時會被擱置很長時間。錯位時間長了，再啟動就容易失靈。那么沼氣發動機長期放置的注意事項如下：

Sometimes, biogas engine sets are left unused for a long time. If the misalignment time is too long, it is easy to malfunction when restarting. The precautions for long-term placement of biogas engines are as follows:

1.在進氣口加入少量水機油，盤車使其附著在活塞頂部、氣缸套內壁和氣門密封面上，將氣門設置在關閉狀態，使氣缸套與外界隔絕。

1. Add a small amount of water and engine oil to the intake port, turn the engine to attach it to the top of the piston, the inner wall of the cylinder liner, and the valve sealing surface. Set the valve in the closed position to isolate the cylinder liner from the outside world.

2.當確定沼氣發動機不會長時間使用時，要盡可能排干冷卻水和潤滑油。讓沼氣發電機組干凈。

When it is determined that the biogas engine will not be used for a long time, it is necessary to drain the cooling water and lubricating oil as much as possible. Clean the biogas generator set.

3.蓋住空氣濾清器、排氣管和油箱，防止灰塵落入。

3. Cover the air filter, exhaust pipe, and fuel tank to prevent dust from falling in.

4.確保沼氣發動機組清潔。去除表面的灰塵和油污。

4. Ensure that the biogas engine set is clean. Remove surface dust and oil stains.

5.取下沼氣發動機的氣門蓋，用刷子涂上少量無水機油，刷在搖臂等部位。

5. Remove the valve cover of the biogas engine, apply a small amount of anhydrous engine oil with a brush, and brush it on the rocker arm and other parts.

6.沼氣發動機應放置在通風良好、干燥和清潔的地方。嚴禁與化學品(如化肥、農藥)一起存放。

6. The biogas engine should be placed in a well ventilated, dry, and clean place. It is strictly prohibited to store together with chemicals (such as fertilizers and pesticides).

下面沼氣發電機組廠家總結在選購沼氣發電機組時的幾點建議：

Below are a few suggestions from biogas generator manufacturers when selecting biogas generators:

1.根據沼氣產量，選擇合適的裝機容量，防止機械設備閑置或沼氣浪費

1. Select an appropriate installed capacity based on biogas production to prevent mechanical equipment from being idle or biogas waste

2.1000KW左右的沼氣發生器市場占有率高，價格高，維護、檢修、保養費用相對較低

A biogas generator with a market share of around 2.1000KW has a high price and relatively low maintenance, repair, and upkeep costs

3.當采用多臺發電機組時，宜采用1000KW左右的同一規格型號，以減少運行費用和備件儲存。量少的時候選功率小一點的。如1000KW加1.500 kW，以便在氣源變化較大時調節輸出功率，保證發電機組在70%以上功率輸出

When using multiple generator sets, it is advisable to use the same specification and model of around 1000KW to reduce operating costs and spare parts storage. Choose a smaller power when the quantity is small. Add 1.500 kW to 1000KW in order to adjust the output power when there is a significant change in the gas source, ensuring that the generator set outputs more than 70% of the power