GASP has developed a patented process for the separation of CO2 from natural gas by cryogenic distillation.
L. A. Pellegrini, “Process for the removal of CO2 from acid gas,” ed: Google Patents, 2014.
• The purity of methane is at commercial grade, with no CO2 solidification;
• the presence of compounds heavier than CO2 increases CO2 solubility in the liquid phase and reduces column diameters;
• the process can be usefully applied when natural gas presents high CO2 (H2S) content;
• the CO2 obtained as bottom product is liquid at high pressure, favorable conditions for EGR/EOR.
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