Experimental Studies on Carbon Dioxide Desorption from Carbonated Ammonia Solution in a Packed Column

The desorption of carbon dioxide from partially carbonated ammonia solution in a packed column was investigated. The CO₂ desorption efficiency and the CO₂ desorption rate varies with the process parameters, including desorption temperature, CO₂ loading and the total ammonia concentration. The experimental results showed that the CO₂ desorption efficiency and the CO₂ desorption rate increased with the desorption temperature and the CO₂ loading of the carbonated ammonia solution. The CO₂ loading played an important role on the selectivity of the CO₂ desorption. Experimental results showed that CO₂ could be released selectively from high degree carbonated ammonia solution.