酶解蛋白液喷雾干燥工艺研究

Study on the Spray Drying Technology of Protein Zymolite Solution

[目的]探索酶解蛋白液喷雾干燥工艺的控制条件。[方法]采用离心式喷雾干燥法干燥酶解蛋白液,通过分析进风温度、雾化器转速、排风温度、收集器内温度得出最佳工艺参数。[结果]进风温度对挂壁物性的影响表明,较佳进风温度为150～170℃。进风温度对料液流加速率的影响表明,进风温度提高1℃,料液流加速率提高1.5%～2.5%;最佳进风温度为160～170℃。排风温度对粘壁的影响表明,最佳排风温度为80～85℃。雾化器转速对生产的影响表明,较佳雾化器转速为15000～18000r/min。酶解蛋白液干燥的较佳工艺条件为:进风温度为160～170℃,排风温度80～85℃,收集器内温度为50℃,雾化器转速为15000r/min。[结论]该研究为喷雾干燥工艺在酶解蛋白液干燥中的应用提供了理论支持。

[ Objective ] The purpose of the study was to explore the control condition of spray drying technology of protein zymolite solution. [ Method] The protein zymolite solution was dried by centrifugal spray drying and the best technological parameters were obtained through analyzing inlet air temperature, rotation speed of atomizer, discharge air temperature and temperature in collector. [ Result] The influence of inlet air temperature on the physical properties of wall-hanging matter showed that the better inlet air temperature was 150 - 170 ℃. The influence of inlet air temperature on the acceleration of material and liquid flow showed that the acceleration of material and liquid flow was enhanced by 1.5% -2.5% when the inlet air temperature was enhanced for 1℃ and the best inlet air temperature was 160 - 170 ℃. The influence of discharge air temperature on wall-sticking showed that the best discharge air temperature was 80 - 85 ℃. The influence of rotation speed of atomizer on production showed that the better rotation speed of atomizer was 15 000 - 18 000 r/min. The better technological condition for drying protein zymolite solution was as follows： the inlet air temperature was 160 - 170 ℃, the discharge air temperature was 80 -85℃, the temperature in collector was 50 ℃ and the rotation speed of atomizer was 15 000 r/min. [ Conclusion] The study provided theoretical support for the application of spray drying technology in drying protein zymolite solution.