Heat integration and dynamic control for separating the ternary azeotrope of butanone/isopropanol/n-heptane via pressure-swing distillation

2021 ◽  
pp. 108657
Author(s):  
Fangkun Zhang ◽  
Defeng Sun ◽  
Yanan Li ◽  
Baoming Shan ◽  
Yixin Ma ◽  
...  
Keyword(s):  
Dynamic Control ◽  
Heat Integration ◽  
Ternary Azeotrope ◽  
Pressure Swing ◽  
Pressure Swing Distillation

Separation of acetonitrile/methanol/benzene ternary azeotrope via triple column pressure-swing distillation

2016 ◽  
Vol 169 ◽  
pp. 66-77 ◽  
Author(s):  
Zhaoyou Zhu ◽  
Dongfang Xu ◽  
Xingzhen Liu ◽  
Zhen Zhang ◽  
Yinglong Wang
Keyword(s):  
Ternary Azeotrope ◽  
Pressure Swing ◽  
Pressure Swing Distillation ◽  
Column Pressure

scholarly journals Process Simulation of the Separation of Aqueous Acetonitrile Solution by Pressure Swing Distillation

Processes ◽  
2019 ◽  
Vol 7 (7) ◽  
pp. 409 ◽  
Author(s):  
Jing Li ◽  
Keliang Wang ◽  
Minglei Lian ◽  
Zhi Li ◽  
Tingzhao Du
Keyword(s):  
Acetonitrile Solution ◽  
Optimum Process ◽  
Total Annual Cost ◽  
Heat Integration ◽  
Reflux Ratio ◽  
Water Mixture ◽  
Aqueous Acetonitrile ◽  
Design Variables ◽  
Pressure Swing ◽  
Pressure Swing Distillation

The separation of aqueous acetonitrile solution by pressure swing distillation (PSD) was simulated and optimized through Aspen Plus software. The distillation sequence of the low pressure column (LPC) and high pressure column (HPC) was determined with a phase diagram. The pressures of the two columns were set to 1 and 4 atm, respectively. Total annual cost (TAC) was considered as the objective function, and design variables, such as the tray number, the reflux ratio, and the feeding position, were optimized. The optimum process parameters were obtained. For the reduction of energy consumption, the PSD with full-heat integration was designed. The TAC of this method is lower by 32.39% of that of the PSD without heat integration. Therefore, it is more economical to separate acetonitrile and water mixture by PSD with full-heat integration, which provides technical support for the separation design of such azeotropes.

Insight into pressure-swing distillation from azeotropic phenomenon to dynamic control

2017 ◽  
Vol 117 ◽  
pp. 318-335 ◽  
Author(s):  
Shisheng Liang ◽  
Yujuan Cao ◽  
Xingzhen Liu ◽  
Xin Li ◽  
Yongteng Zhao ◽  
...  
Keyword(s):  
Dynamic Control ◽  
Pressure Swing ◽  
Pressure Swing Distillation ◽  
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