Low concentration gas power generation technology is mainly applied to internal combustion engine power generation, gas turbine power generation, and oxidation power generation. Due to the influence of coal mining technology, the concentration of gas extracted by high negative pressure systems and ground drilling is generally greater than 30%, mainly used for small gas turbines and high concentration internal combustion engines for power generation; The concentration of gas extracted by low negative pressure systems is generally lower than 30%, mainly used for low concentration internal combustion engine power generation; The concentration of exhaust gas (exhaust gas) in the mine return air shaft is usually below 1%. The mixture of low concentration gas and mine exhaust gas (or low concentration gas dilution gas) is mainly used to enter the thermal countercurrent reactor and catalytic oxidation reactor for oxidation power generation.

主要技术特点：

Main technical features:

通过利用水位自控水封阻火器金属波纹带瓦斯管道专用阻火器细水雾与煤矿抽放瓦斯混合输送等阻火技术，为抽放瓦斯的安全输送和利用创造了条件。

Through the use of water level self-control water seal flame arrester metal corrugated belt gas pipeline special flame arrester water mist and coal mine drainage gas mixed transmission and other fire prevention technology, it creates conditions for the safe transmission and utilization of drainage gas.

借助细水雾消防灭火机理，将细水雾与煤矿抽放瓦斯混合输送，消除管道输送过程中可能引起的静电和管道由于自然或人为因素引起的火源。当输送管道两端产生火焰时，能在管道内迅速熄灭火焰而有效阻止火焰向前或向后传播。

By utilizing the fire extinguishing mechanism of fine water mist, the fine water mist is mixed with coal mine drainage gas for transportation, eliminating potential static electricity and fire sources caused by natural or human factors during pipeline transportation. When flames are generated at both ends of the conveying pipeline, they can quickly extinguish the flame inside the pipeline and effectively prevent the flame from spreading forward or backward.

水雾在输送管道内末端经脱水器与瓦斯分离，由水泵打压循环使用，减少了系统的消耗水量。

The water mist is separated from the gas at the end of the conveying pipeline through a dehydrator, and is pressurized and recycled by a water pump, reducing the water consumption of the system.

瓦斯发电机组采用电控混合金属波纹带瓦斯管道阻火等技术，防回火措施有效，适应煤矿抽放瓦斯压力浓度变化大的特点；采用自动控制系统进行监控，使机组运行较平稳，自动化程度较高。

The gas generator unit adopts technologies such as electrically controlled mixed metal corrugated belt gas pipeline fire resistance, effective anti backfire measures, and adapts to the characteristics of large changes in gas pressure and concentration during coal mine drainage; The use of an automatic control system for monitoring ensures smooth operation of the unit and a high degree of automation.

煤矿瓦斯发电，既可以有效地解决煤矿瓦斯事故改善煤矿安全生产条件，又有利于增加洁净能源供应减少温室气体排放，达到保护生命保护资源保护环境的多重目标。  低浓度瓦斯发电需要解决2个问题，一是各个煤矿的本身不一样，而且随时都在变化，传统的发电机组很难“以不变应万变”；二是低浓度瓦斯的安全输送问题。

Coal mine gas power generation can effectively solve coal mine gas accidents and improve coal mine safety production conditions. It is also conducive to increasing clean energy supply and reducing greenhouse gas emissions, achieving multiple goals of protecting life, resources, and the environment. Low concentration gas power generation needs to solve two problems: firstly, each coal mine itself is different and constantly changing, making it difficult for traditional power generation units to "adapt to changes with immutability"; The second issue is the safe transportation of low concentration gas.

低浓度瓦斯发电机组采用电控燃气混合器技术，可以自动控制空燃比，以适应瓦斯的浓度变化，同时，低浓度瓦斯安全输送技术，采用细水雾技术，解决了低浓度瓦斯的地面安全输送问题。

The low concentration gas generator unit adopts electronic control gas mixer technology, which can automatically control the air fuel ratio to adapt to changes in gas concentration. At the same time, the low concentration gas safety transportation technology adopts fine water mist technology to solve the problem of ground safety transportation of low concentration gas.