Experimental Investigation on CO2 Post-Combustion Capture by Indirect Thermal Swing Adsorption Using 13X and 5A Zeolites

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• 作者：J&eacute ; rô ; me Merel ; Marc Clausse ; Francis Meunier
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2008
• 出版时间：January 2, 2008
• 年：2008
• 卷：47
• 期：1
• 页码：209 - 215
• 全文大小：405K
• 年卷期：v.47,no.1(January 2, 2008)
• ISSN：1520-5045

文摘

Experimental results of CO₂ post-combustion capture for a TSA process including an internal heat-exchanger(indirect heating/cooling) are presented. The comparative experimental study is carried out on 13X and 5Azeolites, with a mixture 90% N₂-10% CO₂ modeling the flue gas. With 5A zeolite having given the bestperformances, we tested it with various operating conditions including one with nitrogen purge duringdesorption. This one showed a good compromise between CO₂ capture rate, purity of the desorbate, volumetricproductivity, and specific-heat consumption. We obtained a volumetric productivity of 37 kg_CO2/m³_ads·h anda specific-heat consumption of 6 MJ/kg_CO2 at our laboratory scale and 4.5 MJ/kg_CO2 for the adiabatic estimate(in the same order of magnitude as those obtained industrially with the reference MEA amine process). Theseresults are promising because our process is not optimized yet and the scale-up on an industrial versioninvolves a reduction in specific-heat consumption.