Mine Gases Treatment for Electric Power Generation

Grasys' high-tech membrane units allow to adjust the calorific value of mine gas and associated petroleum gas with high nitrogen content and treat them as fuel for GTPPs, GRPPs and boiler houses.

Mine Gases Treatment for Electric Power Generation

Mine gas is a more environmentally friendly and efficient fuel than coal.

Mine gas is an excellent power-plant fuel. However, its calorific value is highly dependent on the concentration of methane in it.

Coal mining is always accompanied with the side-effect of mine gas emissions. It is a product containing mainly light and highly volatile methane and a hydrocarbon. Their excessive accumulation in the environment leads to the destruction of the ozone layer, which in turn would lead to the creation of the greenhouse effect. It is also a highly explosive mixture and a potential source of serious hazard. An explosion can cause the mine to collapse, burying people working underground under a layer of soil and coal. Therefore, the primary engineering task at coal mining sites is the utilisation of mine gas. This process is hampered by low methane concentrations and considerable variability in the composition of the stream.

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Modular container or sea container design. Operation in various climatic zones.

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Modular frame building using light steel thin-walled structures and sandwich panels.

Mineral Gas Combustion Heat as a Function of Methane Concentration

Methane concentration in mine gas (%) 30 40 50 60 70 80 90
Combustion heat (MJ/kg) 10.5 14.3 17.8 21.3 24.7 28.5 32.1

In most cases, the concentration of methane in mine gas is up to 35–40% vol. To be used as fuel gas, mine gas must have a lower calorific value of at least 16.0 MJ/m³, which corresponds to a CH4 content of 46% vol.

A similar situation (inability to use the gas directly as fuel gas due to its extremely low calorific value) arises for associated petroleum gas with a high nitrogen content (in some cases up to 90% vol.).

Grasys membrane units can treat mine gas as well as associated petroleum gas with high nitrogen content for use as fuel for GTPPs, GRPPs and boiler houses.

The use of GRASYS membrane technology significantly improves fuel gas quality

  • Increase combustion heat by a factor of 1.5–2
  • Reduce the nitrogen concentration by 10–35% vol.
  • Increase the methane number
  • Receive gas that meets the fuel requirements for GTPPs/GRPPs

Operating Procedure When Dealing With R&P Co. Grasys


Submit a request on the site or reach our specialist by phone


Grasys expert speaks to you and finds out your needs


You fill out a questionnaire with the desired equipment parameters


Our expert prepares a quotation with the most efficient solutions to your application. Contract to be concluded


We perform engineering, designing, manufacture equipment with its further testing and placing into service, etc


We ship equipment to the operational location and provide a package of documents


We are engaged in start-up operations and equipment commissioning


We provide aftersales service to ensure equipment efficient performance and reliability excellence (optional)

Advantages of Cooperating with R&P Co. Grasys

High-tech Russian manufacture

Implementation of import substitution programs

Hands-on experience in implementing over 1600 projects within 20 years

Manufacturing equipment of any size and level of sophistication

Turnkey projects (EPC-contracts)

Prompt technical support

Information contained herein does not constitute а public offer

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