Mine gases treatment for electric power generation

Dependence of mine gas calorific value on methane concentration

In most cases, methane concentration in mine gas ranges within 35–40% vol. For use as a fuel, gas shall have the lower calorific value of at least 16.0 MJ/m³ which corresponds to the CH₄ content of 46% vol.

A similar situation (impossibility of direct gas use as a fuel due to its extremely low calorific value) exists with regard to associated petroleum gas (APG) showing high nitrogen content (in some cases up to 90% vol.).

GRASYS membrane plants allow treating mine gas as well as associated petroleum gas with high nitrogen content for further use as a fuel at GTPP, GPPP, boiler houses.

The use of GRASYS membrane technology makes it possible to significantly improve fuel gas quality by

• Reducing the calorific value by 1.5–2 times
• Reducing the nitrogen concentration by 10–35% vol.
• Increasing the methane number
• Producing the gas meeting the GTPP/GPPP fuel requirements

Booklets and catalogues