PVC气流干燥装置进料工艺的改进

Improvement on the feeding process of PVC pneumatic dryer

介绍了改进PVC气流干燥进料工艺的具体措施:①改造螺旋输送器桨叶,②在进料位置下部干燥管增加缩喉,③改变螺旋输送器的进料位置,④在螺旋输送器端部增加吹扫气。改造后彻底解决了气流干燥管底部积料的问题,杂质粒子数单项优等品率有所提高。

Improvements on the feeding process of PVC pneumatic dryer were introduced, and thc concrete mcasures wcrc as folllows： 1 rebuilding the blades of auger convcyors; 2 adding venturis to drying tubes under the feeding position;3 changing the fceding position of auger conveyors; 4 increasing purging at the top of auger conveyors. After improvement, the problems of accumulating materials at thc bottom of pneumatic drying tubes were solved, and thc first-rate quality percentage of impurity particle number was improved.