An advanced optimization strategy for enhancing the performance of a hybrid pressure-swing distillation process in effective binary-azeotrope separation

2021 ◽  
pp. 120130
Author(s):  
Guang Miao ◽  
Kaisheng Zhuo ◽  
Guoqing Li ◽  
Jing Xiao
Keyword(s):  
Optimization Strategy ◽  
Distillation Process ◽  
Binary Azeotrope ◽  
Pressure Swing ◽  
Pressure Swing Distillation

Exploration of a heat-integrated pressure-swing distillation process with a varied-diameter column for binary azeotrope separation

2019 ◽  
Vol 206 (12) ◽  
pp. 1689-1705 ◽  
Author(s):  
Yinglong Wang ◽  
Pengchao Qi ◽  
Xiao Yang ◽  
Zhaoyou Zhu ◽  
Jun Gao ◽  
...  
Keyword(s):  
Distillation Process ◽  
Binary Azeotrope ◽  
Pressure Swing ◽  
Pressure Swing Distillation

scholarly journals Comparison of the Economy and Controllability of Pressure Swing Distillation with Two Energy-Saving Modes for Separating a Binary Azeotrope Containing Lower Alcohols

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 730
Author(s):  
Lv ◽  
Li ◽  
Zhang ◽  
Huang
Keyword(s):  
Energy Saving ◽  
Simulation Analysis ◽  
Good Control ◽  
Total Annual Cost ◽  
Control Stage ◽  
Binary Azeotrope ◽  
Detailed Simulation ◽  
Pressure Swing ◽  
Pressure Swing Distillation ◽  
Selection Of

The pressure swing distillation (PSD) with two different energy-saving modes are put forward to separate a binary azeotrope containing lower alcohols: benzene/methanol. A comparison of the economy and controllability for the partial and fully heat integrated pressure swing distillation (HIPSD) is made by detailed simulation analysis. The optimal operating parameters of partial and fully HIPSD processes are obtained by minimizing total annual cost (TAC). These results show that the fully HIPSD mode saves 5.88% TAC compared with the partial HIPSD mode. Meanwhile, this paper proposes that the composition slope profile can help to select the temperature control stage (TCS), when the temperature profile in the column is rising rapidly near the bottom and the maximum of temperature slope value occurs in the bottom of the column. Several control structures are developed to check the rationality of the selection of the TCS and evaluate the industrial application. These results illustrate the composition/temperature cascade control structure for the PSD with two energy-saving modes can both get good control performances, and the purities of benzene and methanol can be brought close back to the initial value. However, the fully HIPSD mode can only handle much smaller composition disturbances (<10%) compared with the partial HIPSD mode. Therefore, the selection of energy-saving modes for the separation process should weigh economy against controllability.

Performance Enhancement of Heat Pump with Preheater-Assisted Pressure-Swing Distillation Process

2020 ◽  
Vol 59 (10) ◽  
pp. 4742-4755 ◽  
Author(s):  
Naigen Wang ◽  
Qing Ye ◽  
Xiuxiu Ren ◽  
Lijuan Chen ◽  
Haoxiang Zhang ◽  
...  
Keyword(s):  
Heat Pump ◽  
Performance Enhancement ◽  
Distillation Process ◽  
Pressure Swing ◽  
Pressure Swing Distillation

A novel energy-saving pressure swing distillation process based on self-heat recuperation technology

Energy ◽  
2017 ◽  
Vol 141 ◽  
pp. 770-781 ◽  
Author(s):  
Hui Xia ◽  
Qing Ye ◽  
Shenyao Feng ◽  
Rui Li ◽  
Xiaomeng Suo
Keyword(s):  
Energy Saving ◽  
Distillation Process ◽  
Heat Recuperation ◽  
Pressure Swing ◽  
Pressure Swing Distillation
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