Distributed energy supply

with coal mine gas

MWM gas engines in CHP plants using coal mine gas convert up to 90 % of the energy bound in methane into power and warmth.

Power and heat from coal mine gas

Coal mine gas is released from seams of coal during mining activities. We distinguish between four kinds of coal mine gas: Methane exhausted from unexplored coal beds (CBM), methane coming from active underground mining (CMM), methane exhausted from abandoned mines (AMM) and lean gas. Due to the high methane content of 30 to 95 %, especially CBM, CMM and AMM are suitable for the utilization in gas engines. Only lean gas cannot be used for energy generation, because of the low methane content of 0,2 - 1,5%.

By using coal mine gas with a methane content of up to 30 percent, methane, which is harmful to the environment, can be converted to energy.

The use of coal mine gas in a gas engine has two main advantages: First, methane is converted into CO2 by combustion. CO2 is up to 25 times less harmful to the environment. Second, up to 90 % of the energy bound in methane is converted into power and warmth.

Selected references for coal mine gas fueled CHP plants

Coal Mine Xishan, Shanxi, China

In 2008, MWM equipped the state coal mine in Taiyuan with a total of three TCG 2020 V20 gensets. The plant uses the coal mine gas for the generation of power.

Italiana Coke, Italia

Every year, the leading Italian coking plant Italiana Coke SPA produces about 500,000 tons of coke. Due to the fine experience made with MWM gensets, four old engines were replaced with four new TCG 2032 V16 units.

Pniówek, Poland

Jastrzębie S.A. has been operating a trigeneration plant with three mine gas-fueled engines since 1999. This reference project of SFW Energia, Gliwice, is unique in that the mine gas is used to cover the own power needs and for the underground air-conditi

Photo: © Kokerei / fotolia

Gas engines & Products

Cogeneration Power Plant Solutions

Eco-friendly MWM cogeneration power plants with combined heat and power enable decentralized, economical and energy-efficient power production.

Gas Engines / Gensets

400 - 10,300 kWel

Output range from 400 kWel to 10,300 kWel. Run with natural gas, biogas, shale gas, mine gas and other gases.