Combined drying and crystallization in spray drying

Summary

This project will investigate a new combined approach to producing new engineered particles with controlled particle properties with reduced stickiness to improve the yield from processing and to improve the properties in storage and use.

Supervisor(s)

Professor Timothy Langrish

Research Location

Chemical and Biomolecular Engineering

Program Type

N/A

Synopsis

This combined process is a new development that is evolving due to the need to stabilize powders produced from biological extracts.  A challenging issue is combining the heat, mass and momentum transfer processes with the kinetics of the solid-phase crystallization process because the temperature and moisture content of the particles influence the rate of crystallization.This project tackles important and outstanding research issues that are central to the advancement of science in this field:

1. Modelling the kinetics of solid-phase crystallization at temperatures that are higher than ambient ones;
2. Understanding of the way in which wall deposition and re-entrainment interact with the extent of crystallization in spray-dried products;
3. Developing drying systems, being groups of dryers linked together, to achieve greater control of crystallinity than the control achievable through operating a single dryer on its own.

Keywords

drying, crystallization, new materials, reaction engineering, stickiness, sprays

Opportunity ID

The opportunity ID for this research opportunity is: 304

Other opportunities with Professor Timothy Langrish

• Competitive migration of proteins within droplets and particles during spray drying
• Super Sorbents from Spray Drying
• New robust spray dryer designs
• Energy flow models for timber kilns and total lifecycle costs of timber drying
• Developing new multifunction layered particles with novel modular food processing systems
• Improving the scale-up of spray drying for bioactive extracts and fibres
• The Effects of Spraying Materials into Gases Other than Air as a Way to Control Surface Coating by Proteins
• Creating and Testing Naturally-based Preservatives for Breads from Australian Herbs
• Improving flow stability in small-scale spray dryers
• Improving the Storage Stability of Dairy Powders by Crystallizing Spray-Dried Powders in Fluidized Beds
• Differential Crystallization of Materials During Drying
• Wastes to Products: Towards New High-Value Products from Extraction and Spray Drying of Citrus Peels
• The Effects of Changing the Inlet Gas Temperature and Drying Atmosphere in Spray Drying on Particle Properties
• Vitamin C as a Means of Controlling Crystallinity in Dairy Products
• Energy Recovery in Spray Drying
• Comparing the Alignment of Capital Costs and Embodied Energy for Better Greenhouse Gas Accounting