Method and device for manufacturing triacetonamine

A device for manufacturing triacetonamine, comprising:

• a first reactor containing a first acidic catalyst and receiving an acetone and an ammonia to form an acetonin;
• a second reactor containing a second acidic catalyst and connected to the first reactor and a water source for receiving the acetonin and water, respectively, to form a triacetonamine and side products, wherein the side products are diacetone alcohol, diacetone amine, mesityl oxide, 2,2,4,6-tetramethyl-2,3-dihydropyridine, or a combination thereof;
• a distiller connected to the second reactor for receiving the triacetonamine and the side products and separating the triacetonamine and the side products by distillation under reduced pressure;
• and
• a third reactor containing an amphiphilic catalyst and connected to the distiller and the water source for receiving the side products and water, respectively, to heat and crack the side products to form an acetone,
• wherein the third reactor is connected to the first reactor for introducing the acetone in the third reactor into the first reactor.