چکیده
عنوان مقاله [English]
The conversion process of heavy hydrocarbons to the valuable products such as gasoline is an important operation in the oil refineries.One important process is the “Fluidized Catalytic Cracking” (FCC).Feed injection in FCC process has an important role in the selectivity and properties of the products.Performance of the feed injection system is dependent on the Atomizers.The size and contribution of the feed droplets for desirable reaction is very important. The larger droplets in compare with smaller droplets are evaporated in a longer time and it causes undesirable reactions such as thermal cracking. The PFN 182 Atomizer is designed at the engineering pilot plant department of RIPI for FCC pilot plant operation and for more investigations; the tests are performed by cold feeds (Water-Air and Gas oil- Nitrogen) for simulation.In these tests, the Particle Dynamic Analyzer (PDA) and Photography method for determination of droplet size and velocity are used satisfactorily
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