The operation and control of various batch distillation system with middle vessel

• Main Authors: Min-jhong Wei, 魏民忠
• Other Authors: I-Lung Chien
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/46121715733142843815

碩士 === 國立臺灣科技大學 === 化學工程系 === 96 === This research mainly studied the operation and control of two kinds of batch distillation system which used middle vessel. These two kinds of system are batch extractive distillation and heteroazeotropic batch distillation. First, we studied batch extractive distillation and heteroazeotropic batch distillation with regular column. Then, we studied these two systems with middle vessel and compared the result vs the regular column. In regular batch extractive distillation, we used two kinds of operative strategy and discussed which strategy is better. These two strategies are “Fix column stage 1 temperature＂ and “Fix reflux ratio＂. As operating each strategy, we discussed the effect of changing each operating variables. Then we discussed the batch extractive distillation with middle vessel. As with the regular column, we also used two operative strategies and compared which one is better. As operating each strategy, we discussed the effect of changing each operating variables. Finally, we discussed the result of recovery percentage, recovered product purity and batch operating time in regular column and middle vessel, respectively. In regular heteroazeotropic batch distillation system, we discussed the result of using two operating strategies. As operating each strategy, we discussed the effect of changing each operating variable . Then we discussed the effect of changing variables in heteroazeotropic batch distillation system with middle vessel. Finally, we discussed the result of recovery percentage, recovered product and batch operating time in regular column and middle vessel operation ,respectively.