Description of mine gas:

瓦斯主要成分是甲烷(CH4)，它是无色无味无嗅可燃的气体，爆炸条件：浓度在 5%~16%， 氧气大于 12%，遇明火或者温度 650℃至 750℃就引起爆炸，浓度 9.5% 爆炸威力大；当浓度大于 16% 时，燃烧不爆炸。主要由煤体或者腐烂植物产生，存在状态：吸伏式和游离式。瓦斯气在煤矿井下是煤矿工人第敌，由于地质、环境、空气、工作场所复杂等多种原因，有一定浓度瓦斯，遇到明火就会爆炸，是矿难主要原因。为了从根本上控制重特大瓦斯爆炸事故的发生，国家煤矿安全监察局提出了瓦斯治理的十二字方针，即“先抽后采，监测监控，以风定产”。

The main component of gas is methane (CH4), which is a colorless, odorless, odorless, and flammable gas. Explosion conditions include a concentration of 5% to 16%, oxygen greater than 12%, and exposure to open flames or temperatures ranging from 650 ℃ to 750 ℃, causing an explosion. The concentration of 9.5% has a high explosive power; When the concentration is greater than 16%, combustion does not explode. Mainly produced by coal or decaying plants, present in two states: trapped and free. Gas is the first natural enemy of coal miners in coal mines. Due to various factors such as geology, environment, air, and complex workplaces, there is a certain concentration of gas that can explode when encountering open flames, which is the main cause of mining accidents. In order to fundamentally control the occurrence of major gas explosion accidents, the National Coal Mine Safety Supervision Bureau has proposed a twelve character policy for gas control, which is "pumping first and then mining, monitoring and monitoring, and determining production based on wind".

瓦斯资源丰富，陆上煤层气资源量36.8万亿立方米，与陆上常规天然气资源量（38万亿立方米）相当，仅次于俄罗斯和加拿大。，瓦斯资源的开发和利用，对缓解我国能源供应紧张状况，意义十分重大。

The gas resources are abundant, with 36.8 trillion cubic meters of onshore coalbed methane resources, which is equivalent to the conventional natural gas resources on land (38 trillion cubic meters), second only to Russia and Canada., The development and utilization of gas resources are of great significance in alleviating the tight energy supply situation in China.

瓦斯发电机机组介绍：

Introduction to Gas Generator Unit:

矿井瓦斯发电机组，是以成熟的内燃机技术为基础，利用煤矿抽排瓦斯为燃料驱动燃气发动机工作，结合煤矿瓦斯的特点对柴油发电机组加以改造而成的。由原来燃油改为燃烧瓦斯，发动机驱动发电机运转达到由机械能转化为电能的目的。一般瓦斯浓度在6%-25%之间的煤矿均可发电，绿环提供功率为400kw-1200kw的矿井发电机组，具体可咨询山东绿环（15165044999 经理）。

The mine gas generator set is based on the mature internal combustion engine technology, uses the coal mine gas drainage as the fuel to drive the gas engine to work, and combines the characteristics of coal mine gas to transform the diesel generator set. Changing from fuel to gas combustion, the engine drives the generator to operate, achieving the goal of converting mechanical energy into electrical energy. Generally, coal mines with gas concentrations ranging from 6% to 25% can generate electricity. Green Ring provides coal mine power generation units with a power range of 400kw-1200kw. For specific information, please consult Manager Wang of Shandong Green Ring (15165044999).

瓦斯发电机机组对瓦斯的要求：

Gas generator unit requirements for gas:

■在距离燃气机组燃气进气阀 1m 内

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

◎瓦斯温度≤ 40℃；

Gas temperature ≤ 40 ℃;

◎瓦斯压力 3 ～ 20kpa，压力变化率≤ 1kpa/min;

◎ Gas pressure of 3-20kpa, pressure change rate ≤ 1kpa/min;

◎ H2S ≤ 200mg/Nm3;

◎ H2S ≤ 200mg/Nm3;

◎对于 CH4 体积含量≤ 30% 的瓦斯，CH4 与 O2 体积含量之和≥ 28%, O2 体积含量≥ 16%;

For gas with a CH4 volume content of ≤ 30%, the sum of CH4 and O2 volume content is ≥ 28%, and the O2 volume content is ≥ 16%;

◎瓦斯中水分含量≤ 40g/Nm3;

Moisture content in gas ≤ 40g/Nm3;

◎杂质粒度≤ 5μm, 杂质含量≤ 30mg/Nm3;

◎ Impurity particle size ≤ 5 μ m. Impurity content ≤ 30mg/Nm3;

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 components in the combustible gas are high, it will not only seriously corrode the spark plug electrode, but also increase the acid value in the engine oil, corrode the internal parts of the unit, and easily generate sediment, increasing wear and corrosion of the engine

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