期刊
ENERGY & FUELS
卷 24, 期 11, 页码 6214-6219出版社
AMER CHEMICAL SOC
DOI: 10.1021/ef101123e
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资金
- National Energy Technology Laboratory [DE AC26 04NT41817]
Desirable properties for an oligomenc CO2-capture solvent in an integrated gasification combined cycle (IGCC) plant include high selectivity for CO2 over H-2 and water, low viscosity, low vapor pressure low cost, and minimal environmental, health, and safety Impacts The neat solvent viscosity and solubility of CO2, measured via bubble point loci and presented on a pressure-composition diagram (weight basis), and water miscibility in CO2-philic solvents have been determined and compared to results obtained with Selexol, a commercial oligomenc CO2 solvent The solvents tested include polyethyleneglycol dimethyl ether (PEGDME), polypropyleneglycol dimethylether (PPGDME), polypropyleneglycol diacetate (PPG DAc), polybutyleneglycol diacetate (PBGDAc), polytetramethyleneetherglycol chacetate (PTMEGDAc), glyceryl tnacetate (GTA), polychmethyl siloxane (PDMS), and perfluorpolyether (PFPE) that has a perfluonnated propyleneglycol monomer unit Overall, PDMS and PPGDME are the best oligomenc solvents tested and exhibit properties that make them very promising alternatives for the selective absorption of CO2 from a mixed gas stream, especially if the absorption of water is undesirable
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