含氧煤层气甲烷提浓技术比较

含氧煤层气的主要成分是甲烷、氧气和氮气,为了回收利用煤层气中的甲烷,需要对煤层气进行脱氧和脱氮处理,以提高甲烷浓度.通过调研统计,甲烷提浓技术主要包括三种：含氧-低温精馏、脱氧-低温精馏和脱氧-吸附分离-液化技术.并从安全、造价和功耗三个方面对这三种提浓技术的工艺方案及特点进行分析和比较.研究结果表明：脱氧-低温精馏提浓技术的安全性高、造价较低,功耗居中.因此,含氧煤层气提浓甲烷推荐使用脱氧-低温精馏分离技术.

Methane Concentration Technology Comparison of Oxygen Coal Bed Methane

The main composition of mine exploitation of coal bed methane is methane, oxygen and nitrogen, in order to utility methane of the coal bed methane gas, the need for oxygen and nitrogen treatment on coal bed gas, to improve the methane concentration. Through the investigation and statistics, there are three kinds of methane concentration method： Oxygen-cryogenic distillation, deoxidation-cryogenic distillation and deoxidation - adsorption separation-liquefaction. From the security, cost and energy consumption, the three concentration technical process and characteristics are analyzed and compared. The results show that the deoxidization - cryogenic distillation concentration technology has high safety, lower cost, energy consumption in the middle. Therefore, recommend oxygen coal bed methane concentration methane technology to use deoxidation - cryogenic distillation separation technology.