Fulltext

Computer Aided Design for Spray Driers

Adil A. Al-Hemiri عادل احمد الحميري --- Saad N. Saleh

Iraqi Journal of Chemical and Petroleum Engineering المجلة العراقية للهندسة الكيمياوية وهندسة النفط
ISSN: 19974884/E26180707 Year: 2007 Volume: 8 Issue: 1 Pages: 27-34
Publisher: Baghdad University جامعة بغداد

Abstract

The aim of this work is to develop an axi-symmetric two dimensional model based on a coupled simplified Computational Fluid Dynamic (CFD) and Lagrangian method to predict the air flow patterns and drying of particles. Then using this predictive tool to design more efficient spray dryers. The approach to this is to model what particles experience in the drying chamber with respect to air temperature and humidity. These histories can be obtained by combining the particles' trajectories with the air temperature / humidity pattern in the spray dryer. Results are presented and discussed in terms of the air velocity, temperature, and humidity profiles within the chambers and compared for drying of a 42.5% solids solution in a spray chamber 2.22 m in diameter with a cylindrical top section 2.00 m high and a bottom cone section 1.725 m high.

Keywords

drying --- spray driers --- computer aided design.