Article history: We synthesized and measured the properties of two new, hydrophobic, physical solvents to capture CO Received 20 July 2015 from pre-combustion syngas streams at integrated gasiﬁcation combined cycle (IGCC) power plants, and Accepted 11 March 2016 then estimated their levelized cost of capturing CO (LCOC). The ﬁrst solvent is an amphiphilic solvent Available online 6 April 2016 containing polar ethylene glycol segments and a non-polar siloxane portion (PEG-Siloxane-1). The second solvent is a hydrophobic ionic liquid: allyl-pyridinium bis(triﬂuoromethylsulfonyl)imide [aPy][Tf N]. The Keywords: LCOC was estimated by importing physical properties of these solvents into AspenPlus, and then conduct- Precombustion ing a detailed, techno-economic analysis. Finally, the LCOC of these hydrophobic solvents was compared CO capture with the LCOC baseline solvent, Selexol. Our results suggest that PEG-Siloxane-1 is cost competitive with Physical solvent Selexol, and that [aPy][Tf N] could lower the cost of capturing CO compared with Selexol, depending on 2 2 Computational simulation the cost to synthesize this ionic liquid at commercial scale. Techno-economic analysis Published by Elsevier Ltd. 1. Introduction LCOE takes into account the ﬁxed maintenance costs, the variable operating costs, and the annualized costs on the upfront capital. The In order to limit an increase
International Journal of Greenhouse Gas Control – Elsevier
Published: Jun 1, 2016
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