The gas drainage system has been installed according to the requirements of the national coal mine safety management department, and the gas drainage system must operate normally; Secondly, the pure gas drainage capacity of the gas drainage system is about 1 million m3/year, and the gas concentration is between 6-25%. Achieving these two conditions can provide the foundation for building a gas power station, which can be achieved if the gas power station is built; Promoting pumping by utilization and promoting safety by pumping; The benign cycle of coal mine development.

高低浓度瓦斯的划分：

Classification of high and low concentration gas:

煤矿瓦斯分高浓度瓦斯和低浓度瓦斯，高浓度瓦斯是指瓦斯（甲烷）浓度大于25%的瓦斯，低浓度瓦斯是指瓦斯浓度低于25%的瓦斯。我国60%以上的瓦斯是含甲烷25%以下的低浓度瓦斯，按煤矿安全规程要求，瓦斯浓度在25%以下的就不能贮存和输送。

Coal mine gas is divided into high concentration gas and low concentration gas. High concentration gas refers to gas with a gas (methane) concentration greater than 25%, and low concentration gas refers to gas with a gas concentration lower than 25%. More than 60% of China's gas is low concentration gas that contains less than 25% methane. According to coal mine safety regulations, gas with a concentration of less than 25% cannot be stored and transported.

低浓度瓦斯发电基本要求：

Basic requirements for low concentration gas power generation:

1、按国家煤矿安全管理部门的要求安装了瓦斯抽放系统,并且瓦斯抽放系统须正常运行；

1. The gas drainage system has been installed according to the requirements of the national coal mine safety management department, and the gas drainage system must operate normally;

2、瓦斯抽放系统纯瓦斯抽放量在100万尘3/年左右，瓦斯浓度在6-25%之间。

2. The pure gas drainage capacity of the gas drainage system is about 1 million m3/year, and the gas concentration is between 6-25%.

机组对瓦斯的要求：

Requirements of the unit for gas:

在距离燃气机组燃气进气阀1尘内

Within 1m from the gas intake valve of the gas turbine

1、瓦斯温度&濒别;40℃；

1. Gas temperature ≤ 40 ℃;

2、瓦斯压力3～20kpa ，压力变化率≤1kpa/min；

2. The gas pressure is 3 to 20 kpa, and the pressure change rate is ≤ 1 kpa/min;

3、贬2厂&濒别;200尘驳/狈尘3；

3、贬2厂&濒别;200尘驳/狈尘3；

4、对于颁贬4体积含量，高浓度瓦斯发电机组要求甲烷含量在25%以上，低浓度瓦斯发电机组要求甲烷含量在12%-25%可以正常启动。

4. For CH4 volume content, high concentration gas generator sets require a methane content of more than 25%, and low concentration gas generator sets require a methane content of 12% - 25% to be able to start normally.

5、瓦斯中水分含量≤40g/N m3

5. Moisture content in gas ≤ 40g/N m3

6、杂质粒度≤μm，杂质含量≤30mg/N m3。

6. Impurity particle size ≤ μ m. Impurity content ≤ 30mg/N m3.

如果可燃气体中含硫及氨成分较高，不仅会严重腐蚀火花塞电极，而且会使机油中的酸值增加腐蚀机组内部零件，同时易于生成沉淀物，增加对发动机的磨损和腐蚀。

If the sulfur and ammonia content in the combustible gas is high, it will not only seriously corrode the spark plug electrode, but also increase the acid value in the engine oil and corrode the internal parts of the unit. At the same time, it is easy to generate sediment, increasing the wear and corrosion of the engine.

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