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A Selection of Amine Sorbents for CO2Capture from Flue Gases

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Wilk A., Więcław-Solny L., Śpiewak D., Spietz T., Kierzkowska-Pawlak H.
Chemical and Process Engineering
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2015
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vol. 36
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issue 1
49-57
EN
Amine absorption processes are widely used in the industry to purify refinery gases, process gases or natural gas. Recently, amine absorption has also been considered for CO2 removal from flue gases. It has a number of advantages, but there is one major disadvantage - high energy consumption. This can be reduced by using an appropriate sorbent. From a group of several dozen solutions, three amine sorbents were selected based on primary, tertiary and sterically hindered amines. The solutions were used to test CO2 absorption capacity, absorption kinetics and heat of CO2 absorption. Additional tests were performed on the actual absorber-desorber system to indicate the most appropriate sorbent for capturing CO2 from flue gases.
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PDU-Scale Experimental Results of CO2Removal With Amp/Pz Solvent

86%
Śpiewak D., Krótki A., Spietz T., Stec M., Więcław–Solny L., Tatarczuk A., Wilk A.
Chemical and Process Engineering
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2015
|
vol. 36
|
issue 1
39-48
EN
:This paper provides a discussion concerning results of CO2 removal from a gas mixture by the application of aqueous solutions of ethanoloamine (MEA) and 2-amino-2-methyl-1-propanol (AMP) promoted with piperazine (PZ). The studies were conducted using a process development unit. Research of such a scale provides far more reliable representation of the actual industrial process than modelling and laboratory tests. The studies comprised comparative analyses entailing identical energy supplied to a reboiler as well as tests conducted at similar process efficiencies for both solvents. The results thus obtained imply that using AMP/PZ enables reduction of the solvent heat duty. Moreover, while using AMP/PZ temperature decrease was also observed in the columns.
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