造纸、酒精、生物发酵、餐厨垃圾、养殖场这些行业，午夜黄色视频在线观看产量不小，直接排空既浪费能源又污染环境。但很多企业上了发电机组后才发现，设备故障率居高不下，拆开一看，管路和发动机内部全是腐蚀痕迹。问题出在午夜黄色视频在线观看里的硫化氢。

Industries such as papermaking, alcohol, biological fermentation, kitchen waste, and livestock farms have a significant production of biogas. Direct discharge of biogas not only wastes energy but also pollutes the environment. But many companies only realize after installing generator sets that the equipment failure rate remains high. Upon inspection, there are corrosion marks all over the pipelines and inside the engine. The problem lies in the hydrogen sulfide in the biogas.

一、脱硫是提纯的第一道关

1、 Desulfurization is the first step in purification

午夜黄色视频在线观看成分复杂，除了甲烷和二氧化碳，还含硫化氢、氨、水分、粉尘和少量硅氧烷。硫化氢燃烧后生成二氧化硫，遇水形成亚硫酸，对金属管道和发动机缸体腐蚀出众。一般要求进入发电机组的午夜黄色视频在线观看硫化氢浓度降到200ppm以下，精密设备甚至要降到50ppm以内。不脱硫直接烧，再好的机组也扛不住。

Biogas has a complex composition, containing not only methane and carbon dioxide, but also hydrogen sulfide, ammonia, moisture, dust, and a small amount of siloxane. After the combustion of hydrogen sulfide, sulfur dioxide is generated, which forms sulfurous acid when it comes into contact with water, and it corrodes metal pipelines and engine cylinder blocks extremely strongly. Generally, it is required that the concentration of hydrogen sulfide in the biogas entering the generator set be reduced to below 200ppm, and for precision equipment, it may even be reduced to below 50ppm. No matter how good the unit is, it cannot withstand direct combustion without desulfurization.

二、脱硫工艺怎么选

2、 How to choose desulfurization process

生物脱硫适合大气量、连续产气的场景，运行成本低，但启动慢、对温度敏感。干法脱硫用氧化铁或活性炭做填料，适合小气量和精细脱硫，更换方便但运行费用偏高。湿法脱硫处理高浓度硫化氢效果好，但药剂消耗和污水处理是负担。实际项目中常组合使用：先湿法粗脱，再干法精脱，兼顾成本和效果。

Biological desulfurization is suitable for high gas volume and continuous gas production scenarioses, with low operating costs, but slow start-up and temperature sensitivity. Dry desulfurization uses iron oxide or activated carbon as fillers, suitable for small gas volume and fine desulfurization, easy to replace but with high operating costs. Wet desulfurization has a good effect on treating high concentration hydrogen sulfide, but the consumption of chemicals and sewage treatment are burdens. In practical projects, it is often used in combination: first wet coarse removal, and then dry fine removal, balancing cost and effectiveness.

三、提纯到多少才算够

3、 How much purification is enough

如果只是直燃发电或锅炉，脱硫脱水除尘就够了。如果要提纯为生物天然气并入管网或做车用，还得脱除二氧化碳，把甲烷浓度提到95%以上。这一步投资大、能耗高，有足够的气量和稳定的销路才划算。

If it's just direct combustion power generation or boilers, desulfurization, dehydration, and dust removal are enough. If you want to purify it into bio natural gas and integrate it into the pipeline or use it for vehicles, you also need to remove carbon dioxide and increase the methane concentration to over 95%. This step requires a large investment and high energy consumption, and requires sufficient gas volume and stable sales channels to be cost-effective.

四、气柜不能省

4、 Gas holders cannot be saved

产气量随工艺、温度、微生物活性波动，没有气柜缓冲，后端设备就得频繁启停。气柜的作用是削峰填谷，保证利用端稳定运行。阶段性生产的项目更要配气柜。

The gas production fluctuates with the process, temperature, and microbial activity. Without a gas holder buffer, the backend equipment needs to be frequently started and stopped. The function of the gas holder is to cut peaks and fill valleys, ensuring stable operation at the utilization end. Stage production projects require more gas cabinets.

五、算清账再上马

5、 Calculate the accounts before starting the project

气量够不够、硫化氢多高、周边有没有电和蒸汽需求、当地有没有补贴，这些决定了项目选发电、产蒸汽还是提纯入网。找有整体方案能力的厂家，把净化、存储、利用打通设计，比单买设备拼凑靠谱得多。

Whether the gas volume is sufficient, how high the hydrogen sulfide is, whether there is electricity and steam demand in the surrounding area, and whether there are subsidies in the local area, all determine whether the project chooses to generate electricity, produce steam, or purify and connect to the grid. Finding manufacturers with overall solution capabilities to integrate purification, storage, and utilization design is much more reliable than simply buying equipment and piecing them together.