Temperature Swing Adsorption for Postcombustion CO₂ Capture: Single- and Multicolumn Experiments and Simulations

Abstract

A mathematical model used to describe cyclic adsorption processes is calibrated and validated for the simulation of temperature swing adsorption (TSA) processes applied to the capture of CO 2 from a model flue gas (CO 2 /N 2 ) using zeolite 13X as sorbent material. Three types of experiments are reported in this work, all of them performed in jacketed columns packed with 13X. During these experiments, the temperature was measured at five positions along the central axis of the column, and the exit composition was measured on line by mass spectrometry. The first series of experiments were breakthrough experiments, used to characterize transport phenomena within the packed bed. The second series were heating and cooling experiments, which were used to study the heat transfer from the heating fluid in the column jacket to the bed. Lastly, cyclic TSA experiments were performed to test the model's ability to predict the cyclic steady state behavior of the column as well as the separation performance of the process.

Carbon Capture and Utilization Update

“…However, low recovery for CO 2 is still challenging for this approach . Generally, for postcombustion CO 2 capture, vacuum swing adsorption (VSA) and TSA are more appropriate than PSA, whereas (mainly because of large pressure drops in flue gas application), PSA is more promising for the precombustion process . Attrition of adsorbent particles is another common issue with the process operation.…”

Carbon Dioxide Capture From Internal Combustion Engine Exhaust Using Temperature Swing Adsorption

“…See Supplementary Material for grid representation of HEN. In Table 3, overall heat transfer coefficient (U) for a heat exchanger, with low heat transfer coefficients streams (exhaust cooling, precooling, adsorption, preheating and desorption), is assumed to be 25 W/(m 2 .K) (Clausse et al, 2011;Ribeiro et al, 2013;Marx et al, 2016). Further, the U-value for a heat exchanger, with high heat transfer coefficients streams (Rankine cycle, heat pump and cooling utility), is assumed to be 2000 W/(m 2 .K) (Yang, 2016).…”

“…In order to increase the purity of product CO 2 , they used product CO 2 purge before the desorption step. Marx et al (2016) studied cyclic behavior and separation performance of TSA for post-combustion CO 2 capture. They performed break-through, heating and cooling, and steadystate cyclic experiments to evaluate separation performance of the process.…”

Adsorptive Separation of CO2 from Flue Gas by Temperature Swing Adsorption Processes

“…The research group of Mazzotti , also investigated the use of a TSA process for the removal of CO 2 from flue gas. Joss et al developed a shortcut model for a four step cycle to investigate the CO 2 removal from flue gas by using a TSA process.…”

“…Also, a range of optimal operating conditions was identified. Marx et al conducted single and multicolumn experiments and simulations. The experimental setup consisted of a jacketed column packed with adsorbent.…”