（1） Low concentration gas power generation technology

煤礦瓦斯分高濃度瓦斯和低濃度瓦斯，高濃度瓦斯是指瓦斯（甲烷）濃度大于25%的瓦斯，低濃度瓦斯是指瓦斯濃度低于25%的瓦斯。我國60%以上的瓦斯是含甲烷25%以下的低濃度瓦斯，按煤礦安全規程要求，瓦斯濃度在25%以下的就不能貯存和輸送。 低濃度瓦斯發電需要解決2個問題，一是各個煤礦的本身不一樣，而且隨時都在變化，傳統的發電機組很難;以不變應萬變，二是低濃度瓦斯的安全輸送問題。

Coal mine gas is divided into high concentration gas and low concentration gas, High concentration gas refers to gas (methane) gas with a concentration of more than 25%, and low concentration gas refers to gas with a concentration of less than 25%. More than 60% of gas in China is low concentration gas with a methane content of less than 25%. According to the requirements of coal mine safety regulations, those with a gas concentration of less than 25% cannot be stored and transported. Two problems need to be solved for low concentration watts power generation. One is that each coal mine itself is different and can be used at any time Change, the traditional generator set is difficult; The second is the safe transportation of low concentration gas.

河北思達動力設備有限公司依托濟柴和勝動在燃氣內燃機領域的技術，一直致力于瓦斯發電機組的銷售、電站運營和發電機組修理。其中500KW高低濃度瓦斯發電機組、600KW高低濃度瓦斯發電機組、1000KW高低濃度瓦斯發電機組性能更為穩定可靠，性價比高。機組采用電控燃氣混合器技術，可以自動控制空燃比，以適應瓦斯的濃度變化，適合我國煤礦點多量小的特點，同時，發明了低濃度瓦斯安全輸送技術，采用細水霧技術，解決了低濃度瓦斯的地面安全輸送問題。

Relying on the leading technology of jichai and Shengdong in the field of gas internal combustion engines, Hebei Sida Power Equipment Co., Ltd. has been committed to the sales of gas generator sets, power station operation and generator set repair. Among them, 500kW high and low concentration gas generator set, 600kW high and low concentration gas generator set and 1000kW high and low concentration gas generator set have the most stable and reliable performance and high cost performance. The unit adopts the electronically controlled gas mixer technology, which can automatically control the air-fuel ratio to adapt to the change of gas concentration and the characteristics of large number and small quantity of coal mines in China. At the same time, it has invented the safe transportation technology of low concentration gas and adopted the water mist technology to solve the problem of safe transportation of low concentration gas on the ground.

（二）、低濃度瓦斯發電基本要求

（2） Basic requirements for low concentration gas power generation

首先、按國家煤礦安全管理部門的要求安裝了瓦斯抽放系統,并且瓦斯抽放系統須正常運行；其次、瓦斯抽放系統純瓦斯抽放量在100萬m3/年左右，瓦斯濃度在9-25%之間。達到這2個條件就能具備建設瓦斯電站的基礎，若建設瓦斯電站就可實現;以利用促抽采、以抽采促安全;的煤礦良性循環發展。

Firstly, the gas drainage system is 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 9-25%. If these two conditions are met, the foundation for building gas power station can be met, and if gas power station is built, it can be realized; Use to promote extraction and safety; Coal mine virtuous circle development.

高低濃度瓦斯的劃分：

Division of high and low concentration gas:

煤礦瓦斯分高濃度瓦斯和低濃度瓦斯，高濃度瓦斯是指瓦斯（甲烷）濃度大于25%的瓦斯，低濃度瓦斯是指瓦斯濃度低于25%的瓦斯。我國60%以上的瓦斯是含甲烷25%以下的低濃度瓦斯，按煤礦安全規程要求，瓦斯濃度在25%以下的就不能貯存和輸送。

Coal mine gas is divided into high concentration gas and low concentration gas. High concentration gas refers to gas with gas (methane) concentration greater than 25%, and low concentration gas refers to gas with gas concentration less than 25%. More than 60% of gas in China is low concentration gas with methane content less than 25%. According to the requirements of coal mine safety regulations, gas with gas concentration less than 25% cannot be stored and transported.