Abstract

Spray drying is the gold standard for manufacturing dairy powders, due to its ability to maintain nutritional and functional properties and operate at high capacities. It is, however, extremely energy intensive, accounting for the largest share of total energy consumption in the powder manufacturing process. Therefore, spray dryer optimization, along with other water removal steps such as reverse osmosis and vacuum evaporation, is essential from a sustainability perspective. The objective of this paper is to review recent technological advances relating to product and process (reformulation, pretreatments and emerging technologies) which contribute to improved efficiency and reduced energy consumption in conventional spray drying based processes. Additionally, disruptive technologies that substantially reduce environmental footprint of powder manufacturing process by completely replacing spray drying are discussed.

摘要

喷雾干燥是制造乳粉的黄金标准，因为它能够保持营养和功能特性并以高产能运行。然而，它是极其耗能的，在粉末制造过程中占总能耗的最大份额。因此，从可持续性的角度来看，喷雾干燥器优化以及其他除水步骤（如反渗透和真空蒸发）是必不可少的。本文的目的是回顾与产品和工艺（重新配制、预处理和新兴技术）相关的最新技术进步，这些进步有助于提高传统喷雾干燥工艺的效率并降低能耗。此外，