一、瓦斯介绍煤层气在煤矿称为煤矿瓦斯，简称瓦斯根据新的资源评价结果，我国陆上煤层气资源量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。煤层气的主要成分是甲烷，甲烷在空气中的浓度达到5%－16%时，遇明火就会爆炸，这是煤矿瓦斯爆炸事故的根源。煤层气不加以利用，直接排放到大气中，其温室效应约为二氧化碳的21倍。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。

　　1、 Gas Introduction Coalbed methane is called coal mine gas in coal mines, abbreviated as gas. According to new resource evaluation results, China's onshore coalbed methane resources are 36.8 trillion cubic meters, equivalent to the onshore conventional natural gas resources (38 trillion cubic meters), second only to Russia and Canada. The main component of coalbed methane is methane. When the concentration of methane in the air reaches 5% -16%, it will explode when exposed to an open flame, which is the root cause of coal mine gas explosion accidents. If coalbed methane is not utilized and directly emitted into the atmosphere, its greenhouse effect is about 21 times that of carbon dioxide. Coal mine gas power generation can effectively solve coal mine gas accidents, improve coal mine safety production conditions, increase clean energy supply, reduce greenhouse gas emissions, and achieve multiple goals of protecting life, resources, and the environment.

　　（一）低浓度瓦斯发电技术

　　（1） Low concentration gas power generation technology

　　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。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。依托胜动和济柴在燃气内燃机领域的领先技术，率先研制出性能卓越的高浓度瓦斯发电机组，并后继开发出能适用于低浓度瓦斯的中大功率低浓度瓦斯发电机组，成为最早掌握低浓度瓦斯发电机组技术的厂家之一。其中500KW高低浓度瓦斯发电机组和600KW高低浓度瓦斯发电机组该机组性能最为卓越，性价比高。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，适合我国煤矿点多量小的特点，同时，发明了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。（二）低浓度瓦斯发电基本要求

　　Coal mine gas is divided into high concentration gas and low concentration gas. High concentration gas refers to gas with a methane concentration greater than 25%, while low concentration gas refers to gas with a methane concentration below 25%. More than 60% of the gas in our country is low concentration gas containing less than 25% methane. According to coal mine safety regulations, gas with a concentration below 25% cannot be stored or transported. Low concentration gas power generation needs to solve two problems. Firstly, each coal mine is different and constantly changing, making traditional generator sets difficult; The second issue is the safe transportation of low concentration gas. Relying on the leading technology of Shengdong and Jichai in the field of gas internal combustion engines, we have taken the lead in developing high-performance high concentration gas generator sets, and subsequently developed medium to high power low concentration gas generator sets suitable for low concentration gas, becoming one of the earliest manufacturers to master low concentration gas generator set technology. Among them, the 500KW high and low concentration gas generator set and the 600KW high and low concentration gas generator set have the most outstanding performance and high cost-effectiveness. The unit adopts electric control gas mixer technology, which can automatically control the air-fuel ratio to adapt to changes in gas concentration, suitable for the characteristics of large and small coal mines in China. At the same time, low concentration gas safety transportation technology has been invented, using fine water mist technology to solve the problem of safe transportation of low concentration gas on the ground. （2） Basic requirements for low concentration gas power generation

　　首先、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；其次、瓦斯抽放系统纯瓦斯抽放量在100万m3/年左右，瓦斯浓度在6-25%之间。达到这2个条件就能具备建设瓦斯电站的基础，若建设瓦斯电站就可实现;以利用促抽采、以抽采促安全;的煤矿良性循环发展。高低浓度瓦斯的划分：

　　Firstly, a gas drainage system has been installed in accordance with the requirements of the national coal mine safety management department, and the gas drainage system must operate normally; Secondly, the pure gas extraction capacity of the gas extraction system is around 1 million m3/year, and the gas concentration is between 6-25%. If these two conditions are met, the foundation for building a gas power station can be established. If a gas power station is built, it can be achieved; To promote extraction and safety through extraction; The coal mine is developing in a virtuous cycle. 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。低浓度瓦斯发电基本要求：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；2、瓦斯抽放系统纯瓦斯抽放量在100万m3/年左右，瓦斯浓度在6-25%之间。机组对瓦斯的要求：1、在距离燃气机组燃气进气阀1m内1、瓦斯温度≤40℃；??2、瓦斯压力3～20kpa，压力变化率≤1kpa/min；3、H2S≤200mg/Nm3；4、对于CH4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。5、瓦斯中水分含量≤40g/Nm36、杂质粒度≤5μm，杂质含量≤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。可根据客户实际需要配置单套机组功率涵盖500kw-800kw的瓦斯发电机组。对于装机容量在1MW以上的项目，我们建议客户使用多台500KW的机组并机并网，综合性价比最高。电站运行也更加稳定，维护保养方便，且维护成本低。

　　Coal mine gas is divided into high concentration gas and low concentration gas. High concentration gas refers to gas with a methane concentration greater than 25%, while low concentration gas refers to gas with a methane concentration below 25%. More than 60% of the gas in our country is low concentration gas containing less than 25% methane. According to coal mine safety regulations, gas with a concentration below 25% cannot be stored or transported. Basic requirements for low concentration gas power generation: 1. Install a gas drainage system in accordance with the requirements of the national coal mine safety management department, and the gas drainage system must operate normally; 2. The pure gas extraction capacity of the gas extraction system is around 1 million m3/year, and the gas concentration is between 6-25%. Requirements for gas by the unit: 1. Within 1 meter of the gas inlet valve of the gas unit. 1. Gas temperature ≤ 40 ℃;?? 2. Gas pressure 3-20kpa, pressure change rate ≤ 1kpa/min; 3 H2S≤200mg/Nm3；4、 For CH4 volume content, high concentration gas generators require a methane content of at least 25%, while low concentration gas generators require a methane content of 12% -25% to start normally. 5. The moisture content in gas is ≤ 40g/Nm36, the impurity particle size is ≤ 5 μ m, and the impurity content is ≤ 30mg/Nm3. If the combustible gas contains high levels of sulfur and ammonia, it will not only severely 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 the wear and corrosion of the engine. According to the actual needs of customers, a single set of gas generator sets with a power range of 500kw-800kw can be configured. For projects with an installed capacity of over 1MW, we recommend that customers use multiple 500KW units connected to the grid in parallel for the highest overall cost-effectiveness. The operation of the power station is also more stable, with convenient maintenance and low maintenance costs.

　　三、发电机组技术说明

　　3、 Technical Description of Generator Set

　　1.发电机组运行标准环境条件总大气压力100kPa；环境空气温度25℃；相对湿度30%；在上述条件下，燃油品质符合技术规定时，发电机组能达到额定负荷输出。2.配套发电机可选机组配套的发电机均为国内外知名品牌：利莱森玛、西门子、斯坦福、马拉松、英格、爱尔玛等。

　　1. The operating standard environmental conditions for the generator set have a total atmospheric pressure of 100kPa; The ambient air temperature is 25 ℃; Relative humidity of 30%; Under the above conditions, when the fuel quality meets the technical specifications, the generator set can achieve the rated load output. 2. Optional generators for supporting units. The generators for supporting units are all well-known domestic and foreign brands, such as Leleisenma, Siemens, Stanford, Marathon, Ingersoll Rand, Alma, etc.

　　四、售后服务

　　4、 After sales service

　　保修期：国内机组调试验收合格后的12个月或累计运行1000小时；以先到期为准。由于产品质量问题实行免费维修或换件，终身有偿服务！（易损件、常用件、人为损坏、疏忽保养等均不在保修范围内）如因原厂调整则以原厂保固条例执行！保质期后，用户享受产品终身保养，需配件更换时只收取成本费用，不加收人工费。如遇产品严重损耗或特殊情况，可进行大修或对换新机。

　　Warranty period: 12 months or accumulated 1000 hours of operation after domestic unit commissioning and acceptance; Whichever expires first. Due to product quality issues, we offer free repairs or replacement parts and lifetime paid services! (Vulnerable parts, commonly used parts, human damage, neglect of maintenance, etc. are not covered by the warranty) If they are adjusted by the original factory, the original factory warranty regulations shall apply! After the expiration date, users enjoy lifelong maintenance of the product. If replacement parts are needed, only the cost fee will be charged, and no labor fee will be added. In case of severe product damage or special circumstances, major repairs or replacement with a new machine can be carried out.

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