首先要知道沼氣中含有水分和硫化氫，水分對沼氣的利用影響大。沼氣中的水分與硫化氫共同作用能加速管道及閥門、流量計等的腐蝕，為正常供氣延長設備的使用壽命。在輸氣管路中須安裝沼氣脫硫器，所以在進行沼氣脫硫時需要同時進行脫水處理，去除沼氣中的水分和硫化氫，增加產出沼氣的質量。

Firstly, it is important to know that biogas contains water and hydrogen sulfide, and water has a significant impact on the utilization of biogas. The combined action of moisture in biogas and hydrogen sulfide can accelerate the corrosion of pipelines, valves, flow meters, etc., extending the service life of equipment for normal gas supply. It is necessary to install a biogas desulfurizer in the gas transmission pipeline, so dehydration treatment needs to be carried out simultaneously during biogas desulfurization to remove moisture and hydrogen sulfide in the biogas and increase the quality of produced biogas.

沼氣脫硫器的脫硫方法有濕法和干法脫硫兩種。干法脫硫具有工藝簡單、成熟可靠、造價低等優(yōu)點，并有較好的凈化效果。其中最受歡迎的是使用脫硫劑。

There are two desulfurization methods for biogas desulfurizers: wet and dry desulfurization. Dry desulfurization has the advantages of simple process, mature and reliable, low cost, and good purification effect. The most popular one among them is the use of desulfurizers.

沼氣脫水器外部采用碳鋼結構內部防腐處理，當沼氣以一定的壓力從上部的進氣口進入后，水滴在離心力作用下旋轉與脫水器壁發(fā)生碰撞，使水滴失去動能與沼氣相分離，以達到除塵和脫水的目的。而后器內的水滴沿內壁向下流動而存于裝置底部，并定期排除。

The exterior of the biogas dehydrator adopts a carbon steel structure with internal anti-corrosion treatment. When biogas enters from the upper inlet at a certain pressure, the water droplets rotate and collide with the wall of the dehydrator under centrifugal force, causing the water droplets to lose kinetic energy and separate from the biogas, achieving the purpose of dust removal and dehydration. The water droplets inside the device flow downwards along the inner wall and are stored at the bottom of the device, and are regularly discharged.

從軟體沼氣池中出來的沼氣中含有大量的水氣、硫化氫等有害氣體。沼氣經過初步脫水除塵后然后進入脫硫器，利用合理的反應條件可將沼氣中的硫化氫脫至200ppm以下。

The biogas coming out of the soft biogas digester contains a large amount of harmful gases such as water and hydrogen sulfide. After preliminary dehydration and dust removal, biogas enters the desulfurizer. By using reasonable reaction conditions, hydrogen sulfide in biogas can be removed to below 200ppm.

脫硫后的沼氣進入沼氣增壓風機進行增壓輸送。

The desulfurized biogas enters the biogas booster fan for pressurization and transportation.

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