| 摘要 |
PURPOSE: A purification method of ammonia is provided to remarkably save a device cost without using reboiler, a condenser, and various kinds of distillation columns, to obtain the ammonia of high purity, and to discharge air components. CONSTITUTION: A purification method of ammonia comprises: a step(S1) of injecting ammonia into a first insulated flash tank(F1) or a straight pipe; a step(S2) of obtaining the ammonia in which moisture is removed in an upper stream; a step(S3) of collecting moisture from a lower stream; a step(S4) of injecting liquefied ammonia into a second insulated flash tank(F2) or an insulated straight pipe after liquefying the ammonia without moisture at -10°C or less; a step(S5) of discharging air component to the upper stream; and a step(S6) of obtaining of high purity. |
