01.Apr.2013
A method of obtaining crystallized monoammonium phosphate of good quality using Jordanian granular diammonium phosphate (18 wt% N and 46 wt% P2O5) and impure wet process phosphoric acid (about 50 wt% P2O5) is presented. About 84 % of the total P2O5 fed to the reactor as dissolved diammonium phosphate and impure wet process phosphoric acid is recovered as crystalline monoammonium phosphate of about 11 wt% N and 62 wt%P2O5, the obtained crystals are quadratic prisms in shape. The main steps of the production process include dissolution, filtration, reaction, crystallization, centrifuging, and then drying. It is found that the best operating conditions to produce monoammonium phosphate of good quality, quantity, and crystals size are: 1:1 as DAP/water weight ratio, 1:1 H3PO4/DAP mole ratio, 3 h dissolution time, 35 °C reaction temperature, 45 min reaction time, 15 °C crystallization temperature, 90 min crystallization time, and 70 rpm agitation speed in both the reactor and crystallizer. https://www.researchgate.net/publication/257803379_Optimum_Operating_Conditions_for_Production_of_Crystalline_Monoammonium_Phosphate_Form_Granulated_Diammonium_Phosphate
A method of obtaining crystallized monoammonium phosphate of good quality using Jordanian granular diammonium phosphate (18 wt% N and 46 wt% P2O5) and impure wet process phosphoric acid (about 50 wt% P2O5) is presented. About 84 % of the total P2O5 fed to the reactor as dissolved diammonium phosphate and impure wet process phosphoric acid is recovered as crystalline monoammonium phosphate of about 11 wt% N and 62 wt%P2O5, the obtained crystals are quadratic prisms in shape. The main steps of the production process include dissolution, filtration, reaction, crystallization, centrifuging, and then drying. It is found that the best operating conditions to produce monoammonium phosphate of good quality, quantity, and crystals size are: 1:1 as DAP/water weight ratio, 1:1 H3PO4/DAP mole ratio, 3 h dissolution time, 35 °C reaction temperature, 45 min reaction time, 15 °C crystallization temperature, 90 min crystallization time, and 70 rpm agitation speed in both the reactor and crystallizer.
https://www.researchgate.net/publication/257803379_Optimum_Operating_Conditions_for_Production_of_Crystalline_Monoammonium_Phosphate_Form_Granulated_Diammonium_Phosphate
17.Apr.2024
16.Jan.2024
20.Sep.2023
أنا طالبة في الهندسة الصناعية, اختياري لهذا التخصص كان بناءً على أهميته الكبيرة كمهنة في الحاضر والمستقبل ... رغد بركات
الهندسة الصناعية تساعدك على اتخاذ قرارات أفضل، وتعطي أشكالا أخرى من مبادئ الهندسة بشكل عملي وعلمي في آن. ... محمود صلاح
قسم الهندسة الكيميائية قسم جميل جدا تعلمت فيه الكثير ومما تعلمته فيه جدية العمل وروح الفريق الواحد .. ... رغد الشويكي