Ventilation Air Methane Abatement System

Emerging cost competitiveness should enhance project economics

Potential global market for VAM oxidation and VAM-to-power applications is large

Field demonstrations are multiplying

Flow-reversal oxidation of VAM with power generation is a proven technology

Conclusions

---- Shorter payback time

---- Higher return on investment

Multiple vendors should lead to cost competition that will drive down project capital costs

---- Adds to energy security by beneficially using a currently wasted energy source

Capability to capture and beneficially use VAMs dilute energy content

Ability to mitigate the largest source of coal mine emissions worldwide

Technology Deployment Benefits

(e.g., electricity generation)

Oxidation with energy recovery

Oxidation only

Operational modes

Catalytic

Thermal

Shengdong Technology options

Ventilation air methane (VAM) is largest source of coal mine methane (CMM) emissions

---- Methane drainage can supplement ventilation

Mines employ large scale ventilation systems to vent methane to the atmosphere

---- Well below the lower explosive limit (5% in air)

Mine safety regulations require gassy underground coal mines to assure that methane concentrations in the mine workings are maintained at safe levels

---- More than 20 times as potent as CO2

Methane is a powerful greenhouse gas

Background on VAM

Shengdong Technology options
Thermal Catalytic
Operational modes
Oxidation only or Oxidation with energy recovery