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Permanent link (DOI): https://doi.org/10.7939/R3KK94M1M

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Temperature Swing Adsorption Using Amine Impregnated Adsorbent for CO2 Capture Open Access

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Other title
Subject/Keyword
Temperature Swing Adsorption
Carbon Capture
Solid Adsorbents
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Bangar, Sahil
Supervisor and department
Rajendran, Arvind (Chemical and Materials Engineering)
Gupta, Rajender (Chemical and Materials Engineering)
Examining committee member and department
Rajendran, Arvind (Chemical and Materials Engineering)
Gupta, Rajender (Chemical and Materials Engineering)
Liu, Qi (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2015-09-28T09:03:32Z
Graduation date
2015-11
Degree
Master of Science
Degree level
Master's
Abstract
Capture of carbon dioxide from flue gas using amine functionalized silica based adsorbents has shown great potential recently. Despite their stable performance, the full potential of these adsorbents has not been researched in greater depth. In this thesis, experimental study and simulation of a temperature swing adsorption process for capture of CO2 and regeneration of the adsorbent using steam were carried out. Special emphasis was given on maximizing the purity of CO2 captured using this process, so as to lower the cost of further compression required for sequestration. For simulation of the cyclic temperature swing adsorption process, experimental measurements were carried out to study the adsorbent, suitable process modeling software was chosen and cycle configurations to maximize the performance of adsorbent were developed. Experimental isotherm data was collected for the amine impregnated adsorbent and an isotherm model was fitted. Subsequently, the isotherm parameters from the fitted model were used as input data for modeling of cyclic TSA processes. A reliable adsorption process simulator was then chosen based on its ability to accurately predict the column dynamics for an adsorption process. Model equations for the one-dimensional rigorous model comprising of mass, momentum and heat balances used for the simulation of the adsorption process are detailed. The effective model predictions of the simulator were validated using an adsorption process described in the literature, since the results were discerned to be in the acceptable range, further simulations using the software were carried out. A basic 3-step TSA cycle was developed to capture CO2 using amine impregnated silica adsorbent. Since the purity of the CO2 recovered using this configuration was not very high, another 4-step cycle with steam purge was implemented. The introduction of the steam purge step improved the purity considerably while lowering the recovery marginally. Parametric studies for both the cycles were also performed to determine the best operating conditions for the process.
Language
English
DOI
doi:10.7939/R3KK94M1M
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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