Optimization of a Pressure-Swing Adsorption Process Using Zeolite 13X for CO₂ Sequestration

Abstract

A pressure-swing adsorption process, which uses zeolite 13X as an adsorbent to recover and sequester carbon dioxide from mixture gas (nitrogen and carbon dioxide), is investigated through dynamic simulation and optimization. The purpose of this paper is to improve the purity of each component by finding optimal values of decision variables with a given power constraint. Langmuir isotherm parameters are calculated from experimental data of zeolite 13X and a general mathematical model consisting of a set of partial differential and algebraic equations and solved in gPROMS. The method of centered finite differences is adopted for the discretization of the spatial domains, and a reduced space SQP method is used for the optimization. As a result, the optimal conditions at cyclic steady state are obtained.

Energy optimization of bioethanol production via gasification of switchgrass

“…The recovery of the PSA system is assumed to be 95% for CO 2 and 0% for any other gas of the mixture. 37,45 However, water vapor is present saturating the CO 2 , and it is absorbed too. Once the majority of CO 2 has been removed, the outlet of the PSA system can be fed to the reaction system or recycled back to the MEA system, to Mix 2, for the removal of H 2 S. Splitter 4 (Spl 4) determines the fraction of the stream coming out of the PSA system that follows each alternative.…”

Advances in Pressure Swing Adsorption for Gas Separation

“…For the selected cycle, all the step times, blowdown pressure, and flowrates of rinse and purge steps should be determined [25,[188][189][190][191][192]. Alternatively, it has been suggested that a general "super-cycle" can be used to estimate the optimal duration of each of the steps [193].…”

Post-combustion CO2 capture with a commercial activated carbon: Comparison of different regeneration strategies

“…Within TSA technologies, the specific case in which the solid is heated by the Joule effect is commonly referred to as electric swing adsorption (ESA) [5,6]. The vast majority of studies dealing with CO 2 post-combustion capture by means of PSA or TSA technologies use zeolites as adsorbent [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Zeolite 13X is by far the adsorbent most extensively studied in CO 2 separation processes, due to its high selectivity to CO 2 [21].…”