A new technique of carbon capture by ammonia with the reinforced crystallization was put forward in this paper in view of existing problems. Through the application of low concentration of ammonia with alcohols added in to reinforce crystallization process, ammonia escapes less, and the load capacity increases and at the same time, low energy consumption of regeneration could be achieved easily. By experiments and theoretical calculation, it was found that the absorbent capacity could reach 1.64 kgCO(2)/kgNH(3), and ammonia escape at the outlet could be neglected. What's more, through rough estimation, thermal energy consumption for regeneration was only about 1/3 as much as that of conventional rich solution regeneration. In conclusion, the new technique is an improvement with great advantages for carbon capture by ammonia. (C) 2015 Published by Elsevier B.V.