关键词: 低浓度瓦斯发电机组, 低浓度瓦斯预处理, 机组发电效率, 设备年利用小时数, 真空变压 吸附提纯, 集中湿式低浓瓦斯加压, 分散式罗茨风机加压, 预处理模块, 水冷机组。

Abstract: Based on the gas drainage conditions of coal mine，CMM concentration is generally low，Therefore CMM generating more for low concentration CMM generating set。Due to the low concentration CMM characteristics and gas drainage station conditions，At present the low concentration CMM generally without pretreatment，CMM quality is poorer，The serious influence gas generating set operation stability，reliability and economy。In order to improve the unit operation condition，low concentration CMM should carry on the pretreatment.，And the comprehensive technical and economic analysis for low concentration gas power generation reference opinions for the construction。

Key words: Low concentration CMM generating set, Low concentration CMM pretreatment, Unit power generation efficiency, Equipment using in hours, Vacuum pressure-swing adsorption purification, Concentrated wet low concentration CMM pressure, Distributed roots fan pressure, Pretreatment module, Water chilling unit。