二氧化碳与烟道气按比例混合注入提高煤层气采收率的方法探讨

A Discussion on the Method of Improving Recovery Ratio of Coalbed Methane(CBM) by Proportional Mixed Injection of CO_(2) and Flue Gas

煤层气在煤层中的主要有三种赋存状态,当煤层中储存条件发生变化时,煤层气可以在三态之间相互转换。本文通过研究将不同组分含量气体注入同等条件下的煤层中时,煤层气含量的变化曲线得出最有利于提高煤层气产量的气体组分配比,然后通过研究普通烟道气所含各组分气体含量,从而计算得出将二氧化碳(CO_(2))与烟道气按最佳比例混合后,达到最优配比后注入煤层中,达到既可提高煤层气采收率,又可将废弃气体及CO_(2)埋藏在地下的双重目的。

There are three main occurrence states of CBM in coal seams. When the storage conditions change, CBM can transform among the three states. This paper has a discussion on the change curve of CBM content when gases with different component contents are injected into coal seams under the same conditions from which the best method for increasing CBM production is obtained. Then, the best ratio of CO_(2)/flue gas in mixing by the gas content of each component contained in ordinary flue gas and the mixture with the best ratio is injected into coal seams Which can not only improve the recovery of CBM, but also bury waste gas and CO_(2) underground.