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阐述了一种新型的喷雾干燥方法,即伴随雾化介质被点燃的喷雾干燥,称为火焰喷雾干燥,并提供了初步研究结果。火焰喷雾干燥过程中溶剂蒸发所需能量来自于燃烧喷雾介质中的易燃组分。此种方法不但可以干燥含有可燃溶剂的溶液、浆料、乳剂或糊剂,而且可以通过添加与干燥产品类型和用途相关的可燃物对非易燃物干燥。因动力源直接位于喷雾/蒸发区域中,不但可以较好地利用能源、减少载能体的消耗,而且可以减少有害气体的排放。火焰喷雾干燥过程的载能体包括多种类型可燃性液体组分,例如来自可再生能源的生物乙醇或植物油。可燃性喷雾组分浓度的选择是火焰喷雾干燥过程的基本,因此本文阐述了浓度对所得产品品质的影响。研究了两种不同热敏性的物料,即麦芽糖糊精溶液和陶瓷材料的悬浮液。研究表明,火焰喷雾干燥过程是目前干燥方法中一种有趣的替代方法,首先可用于干燥低热敏性材料,如陶瓷材料。
A new type of spray drying method is described, which is called spray-drying with the atomization medium being ignited, and provides preliminary results. The energy required for solvent evaporation during flame spray drying comes from the flammable components in the combustion spray medium. This method not only dries solutions, slurries, emulsions or pastes containing flammable solvents, but also dries non-combustibles by adding combustibles related to the type and use of the dried product. Because the power source is directly located in the spray / evaporation area, it not only can make better use of energy, reduce energy consumption, but also reduce the emission of harmful gases. The energy carriers of the flame spray drying process include various types of flammable liquid components such as bioethanol or vegetable oil from renewable sources. The choice of flammable spray component concentration is essential for the flame spray drying process, so this article describes the effect of concentration on the quality of the resulting product. Two different thermosensitive materials were investigated, namely a suspension of maltodextrin solution and ceramic material. Research shows that the flame spray drying process is an interesting alternative to the current drying method. It can be used firstly for drying low heat-sensitive materials such as ceramic materials.