沼气脱硫作为一种新能源，得到越来越广泛的运用。

Biogas desulfurization, as a new energy source, is being increasingly widely used.

　　1.脱硫的作用

1. The role of desulfurization

　　沼气中含有微量的硫化氢，略带臭味，通常用于热电联产的燃气发动机，或用于蒸汽或动力出产的锅炉。在焚烧过程中，硫化氢将转化为硫化氢O4。这种酸极具腐蚀性，会在很短时间内损坏发动机或锅炉。在焚烧前除掉硫化氢是必要的。

Biogas contains trace amounts of hydrogen sulfide, with a slight odor, and is usually used in gas engines for cogeneration, or in boilers for steam or power production. During the incineration process, hydrogen sulfide will be converted into hydrogen sulfide O4. This type of acid is highly corrosive and can quickly damage engines or boilers. It is necessary to remove hydrogen sulfide before incineration.

　　2.进步运用寿数削减运转本钱

2. Improve the use of lifespan to reduce operating costs

　　硫化氢腐蚀将逐年削减后端用气设备的寿数，这就是为什么内燃机制造商要求沼气中的硫化氢不能超过20-200ppm。否则，替换各类配件等修理的运转费用将大幅度添加。此外，故障越多，修理费将会进步，收入大大降低。为保证体系设备安全，进步设备运用寿数，满意环保要求，需求去除硫化氢。

Hydrogen sulfide corrosion will gradually reduce the lifespan of backend gas equipment, which is why internal combustion engine manufacturers require that hydrogen sulfide in biogas cannot exceed 20-200ppm. Otherwise, the operating costs of replacing various accessories and repairing them will be significantly increased. In addition, the more malfunctions there are, the more repair costs will increase and the revenue will be greatly reduced. To ensure the safety of system equipment, improve the service life of equipment, and meet environmental requirements, it is necessary to remove hydrogen sulfide.

　　3.保护环境，削减碳减排

3. Protecting the environment and reducing carbon emissions

　　HS2是有毒气体，未经净化的沼气焚烧会导致二氧化硫的排放，形成严峻的恶臭问题以及酸雨。为了健康安全，在运用沼气之前必须要去除硫化氢。

HS2 is a toxic gas, and the incineration of untreated biogas can lead to the emission of sulfur dioxide, resulting in severe odor problems and acid rain. For the sake of health and safety, hydrogen sulfide must be removed before using biogas.

　　4.沼气脱硫的办法常用的有：生物脱硫、干法脱硫或湿法脱硫及其他脱硫办法。

The commonly used methods for biogas desulfurization include biological desulfurization, dry desulfurization, wet desulfurization, and other desulfurization methods.

　　当沼气从厌氧发酵装置中产生时，特别是在中高温下发酵时，它携带很多的硫化氢。因为沼气中仍有很多水蒸气，水和沼气中的硫化氢共同作用，加速了金属管道、阀门、流量计的腐蚀和阻塞。此外，硫化氢焚烧后产生的二氧化硫与焚烧产品中的水蒸气结合形成亚硫酸，对设备的金属表面形成腐蚀，还污染大气环境，影响人体健康。因而，在运用沼气之前，必须除掉其中的硫化氢。

When biogas is produced from anaerobic fermentation equipment, especially during fermentation at medium and high temperatures, it carries a lot of hydrogen sulfide. Because there is still a lot of water vapor in biogas, the combined action of water and hydrogen sulfide in biogas accelerates the corrosion and blockage of metal pipelines, valves, and flow meters. In addition, the sulfur dioxide generated after hydrogen sulfide incineration combines with the water vapor in the incineration product to form sulfite, which corrodes the metal surface of the equipment and pollutes the atmospheric environment, affecting human health. Therefore, before using biogas, hydrogen sulfide must be removed from it.

　　工业上常用的沼气脱硫办法有干法脱硫、湿法脱硫和生物脱硫。

The commonly used methods for biogas desulfurization in industry include dry desulfurization, wet desulfurization, and biological desulfurization.

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The above is an introduction to biogas desulfurization. To learn more, please click: https://www.hneee.net We will wholeheartedly provide you with full score service. Welcome to call us!