CO₂ Liquefaction Plants

SIAD/TPI CO₂ liquefaction plants are installed at the exit of a CO₂ capture plant or from other sources when the CO₂ content of the raw gas stream is greater than 80% and capture is not required.

The CO₂ raw gas flows to the CO₂ compression package consisting of a CO₂ piston or screw compressor. The compressed gas stream is then sent to the dehydration and purification system to remove the moisture and impurities in the stream. After this high-pressure treatment unit, a closed-circuit refrigeration unit reduces the temperature of the CO₂ gas to its liquefaction level.

The liquid CO₂ created in the condenser is gravity-fed to the stripper and reboiler, where the non-condensable impurities are “boiled off” to purify the final liquid CO₂ product to the high-quality level required to meet food and beverage grade specifications

This high-quality Liquid CO₂ product is then transferred to liquid storage for further use or pumped through a heat exchanger convert the liquid to gas and recovering the refrigeration. The pressurized CO₂ can then be piped to a sequestration site or to a chemical process for permanent utilization.

Where Used:

• Breweries
• Distilleries and bioethanol
• Dry ice production companies
• Biogas upgrading off-gas systems (from digesters, landfills
• Carbon capture system