Coalbed methane (CBM) is an emerging source of clean energy. Extracting the coalbed methane allows mining at greater depths while improving safety and providing high mining output. Our blower product line is ideal for coalbed methane recovery, select the cards below to learn more.
Coalbed Methane Recovery
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What Is Coalbed Methane Recovery?
CBM can cause many underground mining disasters and is emerging as a source of clean energy. CBM extraction allows miners to mine at greater depths and allows mining companies to achieve better safety and higher output. There is also a possibility of extracting the methane from abandoned coal mines, getting more product for the mine’s owners, and more “clean energy” for the population to use.
Coalbed methane, also called coalbed gas, is a form of natural gas, which has no color or smell and burns cleanly. CBM in the mine is in a near-liquid state, lining the inside of pores within the coal.
The gas is mainly methane, with trace amounts of ethane, nitrogen, carbon dioxide, and a few other gases. The CBM content of the coalbed increases with depth, the rank of the coal, and the reservoir pressure.
Extracting The Gas
There are small, natural fractures, called cleats, within coal seams. These are often filled with water. To extract the coalbed methane, a steel-encased hole is drilled vertically or horizontally into the coal seam. The metal casing is surrounded by cement. The pipe and cement are perforated in the coalbed area so that gas and water can flow into the well. A water pump pulls water out of the coal seam, reducing the pressure and allowing the methane molecules to detach from the coal and flow into the wellbore and up to the methane pipeline.
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Models to 42,000 CFM
HOFFMAN & LAMSON multistage centrifugal blower/exhauster models cover a broad performance range to meet your needs. Each base model presents its unique performance characteristics and design features.
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With 22 models to choose from and the ability to specify a variety of manufacturing options, you can rest assured that the blower/exhauster you order will deliver the performance you expect. In addition to the base models available, customers can choose from design options such as special coatings, alternative component materials, oil or grease lubrication, special seals, drive couplings, and power sources. The HOFFMAN & LAMSON blower/exhauster you specify is manufactured according to your unique application requirements.
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Our blowers/exhausters may be direct driven, V-belt driven or gearbox driven with an electric motor. Alternative drivers include steam turbines, diesel engines, gasoline engines, and liquid petroleum or methane gas engines. Also available are Rigel Controls.
Rigel Controls provide historical and real-time data for predictive maintenance engineered with the newest technologies for new and existing multistage centrifugal blowers. With minimal cabling and wiring, Rigel Controls reduce installation and maintenance costs, while providing advanced diagnostics and precise system control that are unmatched by ordinary Variable Frequency Drives (VFD's).
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The gas is mainly methane, with trace amounts of ethane, nitrogen, carbon dioxide, and a few other gases. The CBM content of the coalbed increases with depth, the rank of the coal, and the reservoir pressure.