Process flow for separating sulfur dioxide and carbon dioxide based on differences in boiling points
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In real industrial applications, is there any process for separating sulfur dioxide from carbon dioxide based on differences in boiling points, similar to cryogenic separation? Or could someone help provide some materials and references? Thank you!
Physical method: The boiling point of sulfur dioxide is -10°C, while that of carbon dioxide is -78°C; by lowering the temperature to between -10°C and -78°C, sulfur dioxide liquefies and the two substances are separated. Chemical method: First, pass the mixed gas through a conical flask equipped with a three-hole plug (the middle hole is connected to a separatory funnel containing dilute hydrochloric acid). The flask contains a saturated Na2SO3 solution. Allow CO2 to pass through first to remove SO2. Then open the piston of the separatory funnel to allow the dilute hydrochloric acid to react with the saturated Na2SO3 solution, thereby producing SO2.
Can this be realized industrially?