Metal Monolithic Amine-grafted Zeolite for CO{sub 2} Capture

doi:10.2172/1052998

GSTDTAP > 地球科学

DOI	10.2172/1052998
报告编号	None
来源ID	OSTI ID: 1052998
	Metal Monolithic Amine-grafted Zeolite for CO{sub 2} Capture
	Karasaki, Kenzi [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)]; Doughty, Christine [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)]; Gasperikova, Erika [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (Un
	2011-03-31
出版年	2011
语种	英语
国家	美国
领域	地球科学
英文摘要	The solid amine sorbent for CO{sub 2} capture process has advantages of simplicity and low operating cost compared to the MEA (monoethanolamine) process. Solid amine sorbents reported so far suffered from either low CO{sub 2} capture capacity or low stability. The solid amine sorbent developed in this project exhibited more than 3.2 mmol/g and degraded less than 10% even after 500 cycles of heating and cooling in absence of steam. The presence of steam further enhanced CO{sub 2} capture capacity. The cost of the sorbent is estimated to be less than $7.00/lb. This sorbent was developed using the results of in situ infrared spectroscopic study. Infrared results showed that CO{sub 2} adsorbs on TEPA (tetraethylenepentamine)/PEG (polyethylene glycol) as carbamates and bicarbonates. The CO{sub 2} adsorption capacity and oxidation resistance of the amine sorbent can be enhanced by the interactions between NH{sub 2} of TEPA molecules with the OH group of PEG molecules. PEG was also found to be effectively disperse and immobilize the aromatic amines for SO{sub 2} adsorption. The infrared study also showed that SiO{sub 2} is a significantly better support than zeolites due to its proper hydrophobicity. The results of this study led to the development of a high performance solid amine sorbent under simulated gas flow condition in a fixed bed, a fluidized bed, and a metal monolith unit. This study showed heat transfer could become a major technical issue in scaling up a fixed bed adsorber. The use of the fluidized bed and metal monoliths can alleviate the heat transfer issue. The metal monolith could be suitable for small scale applications due to the high cost of manufacturing; the fluidized bed mode would be most suitable for large scale applications. Preliminary economic analysis suggested that the Akron solid amine process would cost 45% less than that of MEA process.
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/5387
专题	地球科学
推荐引用方式 GB/T 7714	Karasaki, Kenzi [Lawrence Berkeley National Lab. ,Doughty, Christine [Lawrence Berkeley National Lab. ,Gasperikova, Erika [Lawrence Berkeley National Lab. . Metal Monolithic Amine-grafted Zeolite for CO{sub 2} Capture,2011.