A new technique for reinforced ammonia with a low carbonized ratio to be crystallized by means of antisolvent crystallization using ethanol as the antisolvent was put forward in this paper in view of existing problems of carbon capture by ammonia. Through the application of antisolvent crystallization to reinforce the crystallization process, low energy consumption of regeneration could be achieved easily due to saving the energy to heat the water of carbonized ammonia in the desorption process. Additionally, if the rate of rising temperature is 5K/min, the crystal product will be totally decomposed, which has advantages over the process of rich carbonated ammonia. The percent conversion of crystal product can be 100% when the temperature is 350K, which can be achieved by the waste heat from the power plant that can be used as a heat source of the regeneration process. When the regenerated temperature is between 313K and 353K, the active energy can be 44kJ/mol. When the rate of rising temperature is 5K/min, 10K/min, 15K/min, and 25K/min respectively, the rate of decomposition and active energy at different experimental conditions are studied in this paper.