Coal Bed Methane Gas Utilized for Power Plant
Coal bed methane (CBM) has considered as one of domestic energy resources in
Indonesia. CBM pilot project has been runing since 2003 with CBM production target has
been set to achieve around 100 MMSCFD in2014, the project is now dewatering stage,
however, around 80 m3 CBM gas has been flowing via well head simultaneousely with
the production water.
GM 454 engine to generate
electricity fulled by CBM gas
This production gas need to be considered to be utilized in an economic way using
natural gas based energy thechnologies avaliable in the market. The concept map
proposed by SINTEF Norway . The concept shows for the gas production less than 1
Mmsm3/day. High Voltage Direct Current (HVDC) technology to produce electricity is
considered to be applicable to transport the energy at the distanceless than around 2500
km. Therefore, exiting CBM gas utilization is proposed to transform to residental
electricity.
A fuel cell system consuming
Methane
while generating electricity
Methode to utilize low production CBM gas to convert to residential scale electricity
includes:
having been purified the production of clean gas is then compressed to be sent
and stored in CNG Cascade for further utilization. Storage capacity of cascade at
250 bar working pressure varies according to its size.
The gas stored in cascade can be used as fuel for gas engine prime mover. This
fuel flows from Medium pressure component of cascade. While from Low pressure
cascade, the gas is piped to power generation set to produce electricity
The electricity produced is then trasnsmitted to the end consumer to provide their
energy demand
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