Spray Drying Technology Review

Abstract

This article reviews spray drying technology for possible space applications like processing of concentrated brines that are produced in evaporation/concentration equipment with a goal of maximum water recovery. Spray drying principles of convection, radiation and mixed convection-radiation are reviewed. Dryer designs and performance are reviewed. Subjects of system dynamics and controls are discussed. Adaptations of existing spray drying concepts to microgravity environment are suggested. Guidelines for design of the spray drying systems for space applications are proposed.