Experimental solid–liquid equilibria and solid formation kinetics for carbon dioxide in methane for <scp>LNG</scp> processing

Abstract In cryogenic liquefaction processes, CO 2 poses a solid‐formation risk even in trace concentrations. We present solid–fluid equilibrium (SFE) data for liquid methane at concentrations from (52 to 500) ppm, extending the available and indicating that models tuned existing over predict solubility of LNG storage temperatures (~112 K) by nearly factor 3. The new are used improve SFE model ThermoFAST software package. formation kinetics solids elucidated conditions relevant gas processing. Repeated, ramped‐temperature measurements provide statistical basis quantifying solidification risk. Nucleation rates extracted data, consistent with those measured fixed temperature, were extract parameters describing solid methane. These results significantly ability natural