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Bright Biomethane - Biogas CO2 Recovery System
In addition to the production of biomethane the Bright Biomethane systems may be used to recover and liquefy CO2 to create an extra source of revenue for the plant owner. On top of this zero methane slip is achieved since the small amount of methane still present in the CO2 in recovered during liquefaction. When no liquid CO2 production is required the recovery system can be put in a stand-by mode that requires no additional energy.
Extra source of revenue!
By extending the Bright Biomethane system with a CO2 recovery module the gaseous CO2 that is produced during the upgrading can be liquefied. This liquid CO2 has food grade quality and can be used in:
- Green houses
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Refrigeration installations
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Food and beverage industry
- Slaughterhouses
This is how we do it
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Compressor
The CO2 is compressed in a non lubricated two stage process compressor and passed through an automatic molecular sieve dryer to completely remove the moisture.
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Filter
Then the CO2 goes to the fine filter to remove any remaining odorant compounds/impurities as well as any remaining powders.
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Liquefier
The purified gas is sent to the CO2 liquefier; traces of non condensable gases still contained in the CO2 gas remain gaseous while the CO2 condenses in the liquefier.
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Stripping tower
Any entrained non-condensables such as oxygen, methane and nitrogen are effectively removed in the stripping tower.
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Pure liquid CO2
These non-condensable gases are used for regeneration of dryer; the pure liquid CO2 flows to an insulated storage tank.