漂白紫胶水洗工艺研究

Study on the washing process of bleached shellac

通过单因素实验确定搅拌转速、洗涤时间和料液比的适用范围,再利用响应曲面法进行工艺优化,得出漂白紫胶水洗工艺的最佳条件,并在此基础上通过多次洗涤得到合适的提取级数。实验结果表明,漂白紫胶水洗工艺的最佳条件为:搅拌转速为400r/min、洗涤时间为12min、料液比为1:7,合适的洗涤级数为4级。

The washing process of bleached shellac was studied through the single-factor test to determine rotational speed,washing time and the scope of application of solid-liquid ratio.The process was optimized by response surface method（RSM）.The optimal conditions of bleached shellac for washing process was obtained,and on this basis appropriate extraction series was received by repeatedly washing.The results showed that the best bleached shellac washing process conditions were：stirring speed 400r/min,washing time 12min,solid-liquid ratio 1：7,a suitable washing series of 4.