Coordinated optimization of hydrogen networks with purification reuse coupled with a shortcut model of the pressure swing adsorption
DENG Chun1, ZHOU Yeyang1, JIANG Wei1, FENG Xiao2
1. State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum-Beijing, Beijing 102249, China;
2. School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China
Abstract：Pressure swing adsorption (PSA) is used to purify hydrogen streams with the upgraded streams reused by hydroprocessing units to increase the hydrogen supply in refineries. This study used a PSA shortcut model to construct a hydrogen network design with purification reuse. The mathematical model used the minimum hydrogen utility as the objective function with the commercial optimization software GAMS (general algebraic modeling system) to solve the problem with DICOPT (discrete and continuous optimizer) as the solver. The results of a case study show that the PSA device has the optimal inlet hydrogen purity. As the adsorption and desorption pressure ratio increases and the adsorbent selectivity decreases, the PSA hydrogen recovery increases and the hydrogen utility decreases. The hydrogen network optimization shows that designers should not blindly increase the PSA inlet hydrogen purity to enhance the hydrogen recovery.
邓春, 周业扬, 江苇, 冯霄. 耦合变压吸附简化模型的提纯回用氢网络协调优化[J]. 清华大学学报（自然科学版）, 2016, 56(7): 735-742.
DENG Chun, ZHOU Yeyang, JIANG Wei, FENG Xiao. Coordinated optimization of hydrogen networks with purification reuse coupled with a shortcut model of the pressure swing adsorption. Journal of Tsinghua University(Science and Technology), 2016, 56(7): 735-742.
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