Method and apparatus for enrichment of firedamp from ventilation air methane of coalmines based on adsorption tower exhaustion end vacuum-pumping discharge process

Meng, Yu; Shi, Shaosong; Yang, Haijun

Full Source: Faming Zhuanli Shenqing CN 102,389,685 (Cl. B01D53/047), 28 Mar 2012, Appl. 10,305,728, 11 Oct 2011; 6pp. (Ch). ;