Biogas contains about one tenth of hydrogen sulfide, which will generate carbon dioxide after combustion with biogas. When the concentration of sulfur dioxide in the greenhouse reaches the limit, some crops sensitive to sulfur dioxide, such as tomato, eggplant, spinach and lettuce, will dehydrate and die the plant tissue. Therefore, it is necessary to undergo desulfurization treatment when burning biogas in greenhouse.

yl6809永利是基于沼气中的硫化氢，硫化氢是一种酸性气体，无论是对人体还是对环境、设备、管道以及仪表等都会产生污染和腐蚀的影响。所以，无论是直接用于燃烧或沼气发电，还是为了为延长设备的使用寿命，在输气管路中必须安装脱硫器，对沼气进行必要的脱硫、脱碳、脱水、除尘等处理。

Biogas desulfurization is based on hydrogen sulfide in biogas. Hydrogen sulfide is an acidic gas, which will cause pollution and corrosion to human body, environment, equipment, pipelines and instruments. Therefore, whether it is directly used for combustion or biogas power generation, or in order to prolong the service life of the equipment, a desulfurizer must be installed in the gas transmission pipeline to carry out necessary desulfurization, decarbonization, dehydration, dust removal and other treatment of biogas.

气脱硫器是农村户用沼气输气系统中不可缺少的一种仪器，yl6809永利器主要有以下4个作用。

Gas desulfurizer is an indispensable instrument in rural household biogas gas transmission system. Biogas desulfurizer mainly has the following four functions.

（1）脱除沼气中的硫化氢气体

(1) Removing hydrogen sulfide gas from biogas

硫化氢对灶具及压力表和管路具有腐蚀作用，以及燃烧不完全带来的异味而造成污染环境，脱除沼气中的硫化氢气体可以避免以上问题的出现。

Hydrogen sulfide corrodes the stove, pressure gauge and pipeline, and pollutes the environment due to the peculiar smell caused by incomplete combustion. Removing hydrogen sulfide gas from biogas can avoid the above problems.

（2）显示压强

(2) Display pressure

有的yl6809永利器上面会附有一个压力表，压力表显示的数字就是沼气池中的压强大小。

Some biogas desulfurizers will be attached with a pressure gauge, and the number displayed by the pressure gauge is the pressure in the biogas digester.

（3）开、关气体通道

(3) Open and close the gas channel

可以根据需要打开或关闭气体通道。

The gas channel can be opened or closed as required.

（4）防止气体回流

(4) Prevent gas backflow

脱硫器具有防止气体回流，以免回火发生。

The desulfurizer can prevent gas backflow to avoid tempering.

沼气中含有少量的硫化氢气体。硫化氢的存在，不仅对人体有害，更是一种酸性气体，对管道、开关阀门、仪表、沼气灯和灶具的电子点火装置等都具有很强的腐蚀性，对家用电器也有腐蚀作用。因此，在输气管道中安装yl6809永利器，可以很好的保证我们安全用气，还能够延长设备的使用寿命。

Biogas contains a small amount of hydrogen sulfide gas. The existence of hydrogen sulfide is not only harmful to human body, but also an acidic gas. It has strong corrosivity to pipelines, on-off valves, instruments, biogas lamps and electronic ignition devices of stoves, as well as household appliances. Therefore, the installation of biogas desulfurizer in the gas transmission pipeline can not only ensure our safe use of gas, but also prolong the service life of the equipment.