| 摘要 |
The invention relates to a system for purifying ammonia. The system for purifying ammonia (200) includes a storage bin (1) used for storing coarse ammonia, an adhering part (2) adhering impurities in the coarse ammonia, a first distillation tower (4) removing and distilling low boiling point impurities, a second distillation tower (5) removing and distilling high boiling point impurities; a condenser (6) recycling the purified ammonia in a form of liquid ammonia, an analyzing part (3) analyzing the impurities contained in the ammonia led from the adhering part; an assisting pipe (8) forming a channel for the ammonia led from the adhering part (2); a channel switch part (9) switching on or off the assisting pipe (8); and a channel switch control part (101) controlling the switching on or off of the channel through operating the switching part based on an analyzing result of the analyzing part (3). |
