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Coal Mine Gas Genset

So-called Coal Bed Methane or Coal Seam Gas (CSG) from un-mined coal beds consists of more than 90% methane and can be harvested independently of coal mining in some locations.

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Coal Mine Gas Genset

Dependent on the capturing time and method, different types of coal mine gas can be identified:
- Coal Bed Methane (CBM)
So-called Coal Bed Methane or Coal Seam Gas (CSG) from un-mined coal beds consists of more than 90% methane and can be harvested independently of coal mining in some locations. The gas composition is very stable, meaning that the gas can be fed either directly into the natural gas network or a gas engine.
- Coal Mine Methane (CMM)
Coal Mine Methane, a methane/air mixture released during active coal mining, must be vented and captured for safety reasons. CMM typically has an oxygen content from 5% to 15%. The methane con-tent ranges from 7% to 60%. However, the methane/air proportion can change suddenly, thus complicating its use in gas engines.
The sudden changes in the composition of coal mine gas from active mining (CMM) put greater demands on the engine design. Shengdong has developed a special gas mixing and engine control system that allows the efficient use of this gas down to a methane content of only 9%. Additionally, Shengdong gas engines are designed to operate on low gas pressure, high humidity, dust load and altitude.
The first Shengdong systems for utilisation of coal gas were installed in Shanxi China in 2000. Currently there are a large number of installations in operation in China. The electrical energy generated can be used in the coal mine to meet electricity requirements or fed into the public power grid. The thermal energy can be used for heating purposes on site or fed into a district heating system.
For more than 30 years Shengdong has specialized in developing and providing generator sets for prime and standby power for coal mine. Our sets are built to the highest standards and all go through rigorous testing before being released to the market place. Our Power Solutions team also design and manufacture generators to meet individual customer requirements not covered by our standard ranges.