Title: Study on Separation and Purification of Trans-1,2-cyclohexanediol
Abstract: Trans-1,2-cyclohexanediol which has heat sensitivity, high boiling point and high coagulating point is separated and purified with batch distillation under vacuum. The distillation is made by changing pressure and reflux ratio strategy. The optimal operating condition is acquired. The operating condition with changing pressure and changing reflux ratio of batch distillation under vacuum which purifies raw trans-1,2-cyclohexanediol is that the beginning time of overall reflux is 2h and the bottom temperature 180~185℃, the changing vacuum 0.086~(0.092 MPa), the changing reflux ratio 5→8→12. The production ratio of trans-1,2-cyclohexanediol is over 87% and the product purity is beyond 98% under the above operation condition. The product's color gets much whiter.
Publication Year: 2004
Publication Date: 2004-01-01
Language: en
Type: article
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