Increasing the DAP Production Capacity of DAP2 Plant of Razi Petrochemical Complex by Controlling the Concentrations of Aluminum and Iron Oxides
- سال انتشار: 1387
- محل انتشار: اولین کنفرانس پتروشیمی ایران
- کد COI اختصاصی: IPCONF01_276
- زبان مقاله: انگلیسی
- تعداد مشاهده: 3111
نویسندگان
Department of Chemical Engineering, Faculty of Engineering, Semnan University، Semnan, Iran
Phosphoric Acid Group (PAG), Chemical Engineering Department, King Saud University, Saudi Arabia
چکیده
Di-ammonium Phosphate (DAP) is one of the best chemical fertilizers used individually or in combination with other fertilizers or soil nutrients. It is usually produced through reaction of wet phosphoric acid with ammonia in a pipe or tank reactor followed by the granulation process. Produced slurry in the reactor is sprayed onto the seed granules, and granule growth occurs. Granules leaving the granulator are first dried and then screened to separate out the product size. In this work, the influence of phosphoric acid impurities on the granulometery and production rate of produced DAP in Razi Petrochemical Complex is experimentally investigated. It is found that the generation of a large number of fine particles due to deficiency of Al2O3 and Fe2O3 in the reactor may speed up the adhesion and coalescence of the DAP granules in the granulator, and thus large amounts of weak big lumps of the product are obtained. When these lumps pass through the crushers, a large amount of dust and fine particles in the recycle stream is produced, which leads to serious operational problems and reduces the production rate. According to the experimental measurements in DAP2 plant (based on pipe reactor) of Razi Petrochemical Complex, a correlation is found between the total concentrations of Al2O3 + Fe2O3 in the phosphoric acid entering the pipe reactor and DAP granulometery. In order to enhance the granulation quality without operational difficulty, the total concentration of aluminum and ferric oxides in the phosphoric acid entering the reactor should be controlled at 2.2 ± 0.1 wt%. This is an interesting result which can be used for improvement of the operational condition of DAP production plants. Applying this to the DAP2 plant of Razi Petrochemical Complex in Iran resulted in an 80% decrease in C.V. of the produced DAP granules and 65% increase in production rate.کلیدواژه ها
DAP, Granulometery, Aluminum Oxide, Iron Oxide, phosphoric acidمقالات مرتبط جدید
- سنتز نانو ماده اکسیدگرافن و بررسی تاثیر آن بر روی مقاومت شیمیایی رنگ آلکیدی
- پیش بینی نرخ های تولید چندفازی (نفت، گاز و آب) با استفاده از روش های یادگیری ماشین: مرور بر روش ها و کاربردها
- روشهای کنترل داده محور در مهندسی شیمی
- بررسی جداسازی گاز پروپیلن از پروپان در غشای ۶FDA-durene با استفاده از روش شبیه سازی مولکولی
اطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.