A low-cost ultrasonic spray dryer to produce spherical microparticles from polymeric matrices

Ultrasonic Spray Pyrolysis for Synthesis of Spherical Zirconia Particles

This paper presents new findings on ultrasonic spray pyrolysis of zirconium hydroxyl acetate precursor drops whose sizes were precisely measured using laser light diffraction technique. Precursor concentration plays a predominant role in determination of product particle size. At 0.01 wt% precursor concentration, conventional spray pyrolysis at 750°C using precursor drops 5–8 !m in diameter, ge...

Impact of Various Polymeric Matrices on the Dissolution of Itraconazole from Surfactant-Sugar-Free Nanocomposite Microparticles

Growth and characterization of ZnO nanocrystalline thin films and nanopowder via low-cost ultrasonic spray pyrolysis

In this paper, we report the preparation and characterization of both the ZnO nanocrystalline thin films and nanopowder by ultrasonic spray pyrolysis technique. ZnO films were grown on polished Si(1 0 0) and amorphous glass substrates at different deposition temperature range varying from 200 to 500 1C. Both orientation and the size of the crystallites were found to depend on the substrate and ...

CFD Simulations of a Co-current Spray Dryer

This paper presents the prediction of air flow, humidity and temperature patterns in a co-current pilot plant spray dryer fitted with a pressure nozzle using a three dimensional model. The modelling was done with a Computational Fluid Dynamic package (Fluent 6.3), in which the gas phase is modelled as continuum using the Euler approach and the droplet/ particle phase is modelled by the Discrete...

شبیه سازی خشک کن پاششی (spray dryer)

روش ها مختلفی برای خشک کردن موادی که بصورت محلول، تعلیق و یا خمیری می باشند وجود دارد یکی از روش ها خشک کردن پاششی است . در این روش خوراک تحت تاثیر انرژی اعمال شده بصورت اتمایز می شود کردن یعنی شکست و خردکردن توده خوراک به هزاران قطره ریز که بصورت دیده خواهد شد و انرژی لازم برای این امر از طریق گریز از مرکز، فشار، جنبش و یا صورت تامین می گردد. اگر انرژی بکار برده شده بصورت گریز از مرکز باشد، ات...