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 CO2desorption efficiency and the CO2desorption rate varies with the process parameters, including desorption temperature, CO2loading and the total ammonia concentration. The experimental results showed that the CO2desorption efficiency and the CO2desorption rate increased with the desorption temperature and the CO2loading of the carbonated ammonia solution. The CO2loading played an important role on the selectivity of the CO2desorption. Experimental results showed that CO2could be released selectively from high degree carbonated ammonia solution.