Study on comprehensive utilization technology of low concentration coal bed methane

Aiming at the problems of low utilization rate and serious environmental pollution caused by concentration coal bed methane emission in a mine, technology was studied means field investigation theoretical calculation, technical solution comprehensive combining regenerative oxidation cryogenic liquefaction obtained, which realized “coal gas are co-mined shared” constructed virtuous cycle development “use to promote pumping, pumping safety”. The research shows that: with about 5% is converted into high temperature flue oxidation, heat energy extracted realize heating mining area; more than 35% purified liquefied LNG product liquefaction, so as long-distance transportation. improves area eliminates burning for heating. annual pure 53.38 million m 3 , generating economic benefits 211 yuan reducing CO 2 equivalent 767,000 t. safety, remarkable. This has practical significance improve realization goal zero emission.