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ժҪ ��ø�Ч�Ȼ��,ͨ��վ��ķ��ᴿ߻૷Ӵ�Ʒ,��Ʒ��ȴ�98 5%��,˲ʱ�ɴ�99 99%,��ʿɴ�70%��ϡ�ͨ��Ա��Ъ��̵��о�,�õ��˵Ĳ��:ѹ��P=2kPa��8kPa,��R=4��12��ʵ��ñ��ķ��߲�Ʒ��ʡ�

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Abstract�� 7-hydroxy is rectified by vacuum distillation with high efficient packed tower with �� filler,the product purity is over 98.5%,99.99% at instant,the yield is over 70%.Through the study of multivariable batch distillation process,the optimized operation parameters were obtained,the pressure is 2kPa��8kPa,the reflux ratio is 4��12.The experimentation indicated that multivariable batch distillation process could improve the yield.

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Received 2004-05-15; published 2004-05-15

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��,��ķ�,��Сƽ,�ſ�÷.�ߴ�߻૷��̵��о�[J]. ��ѧ��ҵ�빤��, 2004,21(3): 186-188

FENG Hui-sheng,CHEN Wen-feng,LI Xiao-ping,ZHANG Jun-mei .Optimization of Distillation Operation Parameters of High Purity 7-hydroxy[J]. Chemcial Industry and Engineering, 2004,21(3): 186-188