Hydrogen Production from Coal Industry Methane

Abstract

Coal industry methane is a fossil raw material that can serve as an energy carrier for the production of heat and electricity, as well as a raw material for obtaining valuable products for the chemical industry. To ensure the safety of coal mining, rational environmental management and curbing global warming, it is important to develop and improve methods for capturing and utilizing methane from the coal industry. This review looks at the scientific basis and promising technologies for hydrogen production from coal industry methane and coal production. Technologies for catalytic conversion of all types of coal industry methane (Ventilation Air Methane – VAM, Coal Mine Methane – CMM, Abandoned Mine Methane – AMM, Coal-Bed Methane – CBM), differing in methane concentration and methane-to-air ratio, are discussed. The results of studies on the creation of a number of efficient catalysts for hydrogen production are presented. The great potential of hybrid methods of processing natural coal and coal industry methane has been demonstrated.

Promising Directions in Chemical Processing of Methane from Coal Industry. Part 3. Catalytic Tests

“…One of the ways to utilize coal mine methane is its chemical processing using catalytic technologies [8][9][10][11][12][13]. A promising process for processing coal mine methane is the tri-reforming of methane (reaction 1), for which the change in the enthalpy of the reaction (Δ r H о Т) and the change in the Gibbs free energy of the reaction (Δ r G o Т) at 800 ºC and 1 bar are +154 kJ/mol and -108 kJ/mol, respectively.…”

Promising Directions in Chemical Processing of Methane from Coal Industry. Part 2. Development of Catalysts

“…The possibility of 100% methane conversion is demonstrated, along with the possibility to obtain hydrogen-containing gas with the concentration 40 to 90 vol.% using the methane-air mixture from coal production. For the processing of a methane-air mixture of variable composition with a methane concentration of 30-80%, the most promising are the methods of catalytic combined reforming (tri-reforming, autothermal reforming, steam-CO 2 reforming) of CMM or AMM into a hydrogen-containing gas [9,10]. The application of effective catalysts ensures practical feasibility of thermodynamically permitted processes and achievement of the equilibrium parameters of the reaction.…”