METHOD FOR PRODUCTION OF BIURET WITH USAGE CARBAMIDE AS THE SOURCE PRODUCT AND THE DEVICE FOR THE METHOD REALIZATION Russian patent published in 2007 - IPC C07C225/06 C07C275/62 

FIELD: chemical industry; methods and the devices for production of the biuret.

SUBSTANCE: the invention is pertaining to the method of production of biuret and to the device for its realization. The process includes production in the pyrolysis furnace of the biuret and ammonia by the carbamide pyrolysis, purification of the gained biuret in the reactor of the recrystallization, production of the salt of the monohalogenbiuret metal by interaction of the biuret with the compound of the hypohalogen metal or with halogen and the base in the first reactor. Interaction in the second reactor of the produced biuret metal salt with ammonia, including the ammonia produced during the pyrolysis process of carbamide at the molar ratio of the salt of the monohalogenbiuret metal and the total amount of the ammonia making 1:1-1:1000. The separated excess of the ammonia extracted from biuret in the ammonia evaporator is sent to the ammonia concentrator. At that the ammonia concentrator is intended for concentration of the excess of the ammonia and the ammonia produced in the pyrolysis furnace and for delivery of the concentrated ammonia in the second reactor. The technical result of the invention is the development of the economically profitable continuous process with high efficiency and utilization of the easily accessible source product, reduction of the quantity of the by-products.

EFFECT: the invention ensures the development of the economically profitable continuous process with high efficiency and utilization of the easily accessible source product, reduction of the quantity of the by-products.

14 cl, 62 ex, 12 tbl