In this paper, we developed a novel process integrating vacuum distillation with atmospheric chlorination reaction(VD-ACR) to realize the flexible production of tetrachloroethane(TeCA) and pentachloroethane(PCA)from 1...In this paper, we developed a novel process integrating vacuum distillation with atmospheric chlorination reaction(VD-ACR) to realize the flexible production of tetrachloroethane(TeCA) and pentachloroethane(PCA)from 1,2-dichloroethane(DCA). During the simulation, the distillation column and reactors were operated for separation and chlorination respectively under variable pressures and temperatures. It is interesting to note that VD-ACR processes producing pure TeCA or PCA can exhibit the similar configuration parameters after optimization, which enables the flexible production of TeCA and PCA with different molar ratios via changing operating parameters. The molar ratio of TeC A/PCA can be fine-tuned within the range of 0.9:0.1-0.1:0.9 through adjusting the amount of chlorine pumped into side reactors, giving rise to the increase of the heat duty of reboiler by five times. A pilot-scale experiment was then operated based-upon this VD-ACR process and the result matched well with the simulation. Therefore, the VD-ACR model presented in this study will be beneficial for the industrial-scale flexible production of TeCA and PCA from DCA.展开更多
The design features of 8 Mt/a atmospheric and vacuum distillation unit (Ⅲ) in Zhenhai Refiningand Chemical Company are presented and various process schemes are compared. Production practice hasproved that the main p...The design features of 8 Mt/a atmospheric and vacuum distillation unit (Ⅲ) in Zhenhai Refiningand Chemical Company are presented and various process schemes are compared. Production practice hasproved that the main process design is advanced and reasonable and the process parameters basicallyreached design requirements.展开更多
基金Supported by the National Natural Science Foundation of China(21276126,61203020)Prospective Joint Research Project of Jiangsu Province(BY2014005-02,BY2015005-02)The Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
文摘In this paper, we developed a novel process integrating vacuum distillation with atmospheric chlorination reaction(VD-ACR) to realize the flexible production of tetrachloroethane(TeCA) and pentachloroethane(PCA)from 1,2-dichloroethane(DCA). During the simulation, the distillation column and reactors were operated for separation and chlorination respectively under variable pressures and temperatures. It is interesting to note that VD-ACR processes producing pure TeCA or PCA can exhibit the similar configuration parameters after optimization, which enables the flexible production of TeCA and PCA with different molar ratios via changing operating parameters. The molar ratio of TeC A/PCA can be fine-tuned within the range of 0.9:0.1-0.1:0.9 through adjusting the amount of chlorine pumped into side reactors, giving rise to the increase of the heat duty of reboiler by five times. A pilot-scale experiment was then operated based-upon this VD-ACR process and the result matched well with the simulation. Therefore, the VD-ACR model presented in this study will be beneficial for the industrial-scale flexible production of TeCA and PCA from DCA.
文摘The design features of 8 Mt/a atmospheric and vacuum distillation unit (Ⅲ) in Zhenhai Refiningand Chemical Company are presented and various process schemes are compared. Production practice hasproved that the main process design is advanced and reasonable and the process parameters basicallyreached design requirements.
