低温喷雾干燥机设备的工艺要求

低温喷雾干燥机是一种能够同时完成干燥和造粒的设备。 根据工艺要求，可以调整喷孔的压力、流量和尺寸，以一定的尺寸比例获得所需的球形颗粒。

Low temperature spray dryer is a device that can dry and granulate at the same time. According to the process requirements, the pressure, flow rate and size of the nozzle can be adjusted to obtain the required spherical particles with a certain size ratio.

低温喷雾干燥机可采用全自动或手动监控两种操作模式，便于实验过程的操作和监控，特别是实现了低温条件下( 50℃)物料的瞬时干燥，为酶制剂、活性细菌、高糖中药天然产物提取物、耐热高分子材料、受热物料等生物制品等热敏性物料提供了极其方便、安全的干燥方法

Low temperature spray dryer can be operated by two modes of automatic or manual monitoring to facilitate operation and monitoring of the experimental process, especially under low temperature conditions. Instantaneous drying of materials at 50 ℃ provides an extremely convenient and safe drying method for enzyme preparations, active bacteria, extracts of natural products of high sugar traditional Chinese medicine, heat-resistant polymer materials, heated materials and other biological products and other heat sensitive materials

低温喷雾干燥机的性能特点

Performance characteristics of low temperature spray dryer

干燥速度快，雾化后料液的表面积大大增加，95 % - 98 %的水可以在热风流中瞬间蒸发，干燥时间只需要十几秒到几十秒，特别适合热敏材料的干燥。所有产品均为球形颗粒，粒径均匀，流动性好，溶解性好，纯度高，质量好。应用范围广，根据材料的特点，热风可用于干燥或冷风造粒，对材料适应性强。操作简单稳定，控制方便，易于实现自动化操作。

The drying speed is fast, the surface area of the material liquid is greatly increased after atomization, 95% - 98% of the water can evaporate instantly in the hot air flow, and the drying time only takes ten seconds to dozens of seconds, which is especially suitable for the drying of thermal sensitive materials. All products are spherical particles with uniform particle size, good fluidity, good solubility, high purity and good quality. According to the characteristics of materials, hot air can be used for drying or cold air granulation, which has strong adaptability to materials. Simple and stable operation, convenient control, easy to realize automatic operation.

在喷雾干燥机实验中，热风温度是很重要的一个参数，其是指干燥时所用热风进入塔内的温度，一般是越高越好，因为这样其经济性就会提高了。不过，热风温度也不能无限高，因为如果过高的话，那么则会带来不良影响，比如使得干燥后的成品的质量变差。所以说，想要提高其温度，那么应先确保能够保证产品质量，然后再来适当提高。

In the experiment of spray dryer, hot air temperature is a very important parameter. It refers to the temperature of the hot air entering the tower when drying, generally the higher it is, the better the economy will be. However, the hot air temperature can not be infinitely high, because if it is too high, it will bring adverse effects, such as making the quality of the dried product worse. Therefore, if we want to increase the temperature, we should first ensure that the product quality can be guaranteed, and then properly improve it.

喷雾干燥机的热风温度，其主要是会影响到干燥成品的松密度，以及干燥室的蒸发强度。如果是对食品进行干燥，那么其温度一般不能超过177℃，以免产品出现空心颗粒。但如果是非热敏性物料，那么应尽量采用高温热风，以便可以来提高蒸发强度。

The hot air temperature of the spray dryer will mainly affect the loose density of the dried products and the evaporation intensity of the drying chamber. If the food is dried, the temperature should not exceed 177 ℃ to avoid hollow particles. But if it is non heat sensitive material, high temperature hot air should be used as far as possible to improve the evaporation intensity.