Method for production of compound fertilizers
Номер патента: EP2951136A1
Опубликовано: 09-12-2015
Автор(ы): Alfredas Martynas SVIKLAS, Vidmantas KUČINSKAS, Virginijus ŠTREIMIKIS
Принадлежит: UAB "ARVI" ir ko
Опубликовано: 09-12-2015
Автор(ы): Alfredas Martynas SVIKLAS, Vidmantas KUČINSKAS, Virginijus ŠTREIMIKIS
Принадлежит: UAB "ARVI" ir ko
Реферат: The aim of this invention is to present such a method for production of compound fertilizers that simplifies the process and reduces energy consumption as well as atmospheric pollution. Water and/or water vapour are not used for moistening of the fertilizer components: this enables elimination of drying stage. This method for production of dry compound fertilizers features mixing of dry components in a mixer and subsequent granulating of them, additional feeding-in of hardening slurry consisting of urea, sulphuric acid, magnesium and ammonium sulphate into granulator. Preparation of hardening slurry comprises three stages: (a) mixing of urea with concentrated sulphuric acid and diluting with water; (b) mixing of the slurry obtained with magnesium component such as melting product of periclase; (c) mixing of the slurry obtained with ammonium sulphate. The use of present method for production of compound fertilizers leads to production of fertilizers having high concentration of nitrogen.
Method for gas-phase production of isocyanates
Номер патента: RU2571826C2. Автор: Вольфганг ЛОРЕНЦ,Райнер БРУНС,Андреас Карл РАУШ,Штефан ВЕРСХОФЕН,Тим ЛОДДЕНКЕМПЕР. Владелец: Байер Интеллектуэль Проперти Гмбх. Дата публикации: 2015-12-20.