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Use glycerol to dehydrate supercritical carbon dioxide

07.01.2011  |  Beitler, C.,  Trimeric Corp., Buda, TexasFisher, K.,  Trimeric Corp., Buda, TexasLundeen, J.,  Trimeric Corp., Buda, TexasSwadener, M.,  Denbury Resources Inc., Plano, Texas

This technology increases hydrocarbon recovery

Keywords: [natural gas] [acid gases] [W2 glycerol] [sulfur]

Twenty years after the first two glycerol dehydration units were built for supercritical carbon dioxide (CO2) use, Denbury Resources found a need to build new units to process the increasing amount of CO2 production from the Jackson Dome area in Mississippi. Denbury has now completed and started up five new glycerol-based dehydration facilities in the past five years, with other units under construction. Glycerol is used to dehydrate CO2 when high-pressures and non-idealities cause excessive vapor-phase glycol (i.e., ethylene, diethylene or trietheylene glycol) losses, making normal glycol-based dehydration uneconomical in comparison with glycerol-based dehydration. Denbury uses the supercritical CO2 primarily for enhanced oil recovery (EOR).

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