| Methane Purification |  |
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| Specification | Applications |
Pressure
swing Adsorption process offers an unique compact, economically viable
and highly reliable gas purification system that is especially designed
for the removal of Carbon dioxide gas from from Methane. By using this
method, Methane, Landfill gases, Bio gas and natural gas can be upgraded
to derive high purity methane. The purification by the pressure swing
adsorption (PSA) process is primarily based on the physical adsorption
of gases by the specialized adsorbents. The process works like this. Adsorbents start removing non-methane components like CO2 and H2O once operating pressures of around (50-450 psig) is applied. This allows purified methane to be produced. As the adsorber bed is near the saturation point, the impurities are allowed to purge at low pressures of around 2 psi. A typical methane purification by PSA system uses 6 adsorber beds that are used parallely for maintaining a constant flow of the end product gas. These days with advancement in the technology, rotary multi port valve systems are being increasingly used thus replacing the large and complex controls of earlier solenoid valves.
Specifications of a Methane Purification System by PSA Method:
Though the purification of methane by PSA system can differ with respect to the paricular equipment used. Some general specifications are given here for a particular PSA system of purifying Methane Gas.
| PSA Feed Gas | PSA Product Gas |
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Applications of Methane Purified By PSA systems:
The Pressure Swing Adsorption system for purification of methane has a numerous commercial applications that includes:
- Upgradation of Landfill gas and Biogas
For production of Liquified Natural Gas (LNG) upgrade to pipeline quality natural gas. - Production of pure methane from poor-quality reserves of natural gas.