Purification of Natural Nicotine by Vacuum Batch Distillation
DING Zhi-Wei1, 2 , JIA Peng-Fei3, TANG Heng-Dan3, WANG Ji-Hong3
(1.School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; 2.National Engineering Research Center for
Distillation Technology, Tianjin 300072, China; 3. Tianjin Univtech Co.,Ltd., Tianjin 300072, China)
Abstract：
Because of big loss and low purity of product in traditional refining process for extraction of natural nicotine, an innovative method for purification of nicotine by vacuum batch distillation was studied. And the suitable operating conditions were obtained. The distillation process included two stages as follows: In solvent recovery stage, the appropriate pressure was 50—100 kPa and reflux ratio was 2—4, respectively, and the recovery of chloroform was 88.7%. While in nicotine refining stage, the suitable operating pressure was not more than 0.5 kPa, the reflux ratio was 3—5. And the purity (mass fraction) and yield of nicotine was more than 99.5% and 74.0%, respectively. The method to refine nicotine is steady, convenient for control and easy to be realized in industrialization.
DING Zhi-Wei1, 2 , JIA Peng-Fei3, TANG Heng-Dan3, WANG Ji-Hong3.Purification of Natural Nicotine by Vacuum Batch Distillation[J]. Chemcial Industry and Engineering, 2013,30(5): 76-79
2013, Vol. 30 
