Carbon Capture and Storage is a crucial mitigation strategy that aims at preventing the release of large quantities of CO2 into the atmosphere. More recently, studies on CCS integration with the LNG production, which requires a deep removal of CO2 to avoid its freezing, have begun. In this respect, the application of low-temperature CO2 removal processes is interesting: CO2 can be recovered in liquid phase under pressure, being suitable for direct pumping and transportation or for direct storage, at a cost lower than that required using traditional physical or chemical scrubbing units. The present chapter deals with an energy analysis based on the concept of equivalent methane aimed at comparing a conventional technology (MDEA scrubbing) with low-temperature ones (Ryan-Holmes process and dual pressure low-temperature distillation), taking into account the overall LNG production chain, where the low temperatures required in the purification step are synergistic with the LNG production.

CO2 capture from natural gas in LNG production. Comparison of low-temperature purification processes and conventional amine scrubbing

L. A. Pellegrini;G. De Guido;LODI, GABRIELE;
2017

Abstract

Carbon Capture and Storage is a crucial mitigation strategy that aims at preventing the release of large quantities of CO2 into the atmosphere. More recently, studies on CCS integration with the LNG production, which requires a deep removal of CO2 to avoid its freezing, have begun. In this respect, the application of low-temperature CO2 removal processes is interesting: CO2 can be recovered in liquid phase under pressure, being suitable for direct pumping and transportation or for direct storage, at a cost lower than that required using traditional physical or chemical scrubbing units. The present chapter deals with an energy analysis based on the concept of equivalent methane aimed at comparing a conventional technology (MDEA scrubbing) with low-temperature ones (Ryan-Holmes process and dual pressure low-temperature distillation), taking into account the overall LNG production chain, where the low temperatures required in the purification step are synergistic with the LNG production.
Cutting‐Edge Technology for Carbon Capture, Utilization, and Storage
978-1-119-36348-4
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/1056215
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