METHOD AND PLANT FOR METHANE REMOVAL FROM LOW CONCENTRATION GAS IN COAL MINES Russian patent published in 2014 - IPC E21F7/00 

FIELD: mining.

SUBSTANCE: proposed group of inventions refers to mining industry and is meant for methane removal from low concentration gas in coal mines. Methane removal method from gas in coal mines includes the following stages: (A) initial engagement of the plant oxidation reactor, fulfilment of the null cycle of methane oxidation reaction and heating start to the temperature not below 800°C; (B) low concentration gas with methane supply to oxidation reactor, quick reaction of methane with oxygen and heat release; (C) accumulation of heat released upon reaction; (D) after oxidation reaction completion exhaust gas blowing-out from oxidation reactor to complete treatment; (E) reiteration of (B), (C), (D) stages. Also provided is a device for methane removal from gas which contains check valve assembly, oxidation reactor, return valve assembly, gas supply system and instrumentation system. Check valve assembly is installed with oxidation reactor. Check valve assembly and oxidation reactor are connected to return valve assembly and gas supply system.

EFFECT: providing possibility of methane removal from gas using oxidation reaction of low methane quantity in gas at high temperature.

10 cl, 3 dwg