Integrated refrigeration system of a liquefied natural gas production plant comprising a carbon capture unit
AssigneeNuovo Pignone Tecnologie Srl
InventorsOlaf STALLMANN, Gianluca DI FEDERICO MANGIFESTA, Christoph WEINGAERTNER
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Abstract
A liquefied natural gas production plant comprising a carbon capture unit wherein the refrigerant fluid thermodynamic refrigeration cycle of the carbon capture system and the refrigerant fluid thermodynamic refrigeration cycle of the liquefied natural gas production plant are integrated by using the same refrigerant fluid and sharing at least some apparatuses, thus reducing the overall number of apparatuses and in particular the overall number of compressors and consequently reducing the emissions of carbon dioxide produced by the compressors.
Claims9
A liquefied natural gas production plant comprising:
- a natural gas cooling unit comprising at least one heat exchanger configured to cool a natural gas stream through heating of a refrigerant fluid and also comprising a closed thermodynamic refrigerant fluid refrigeration cycle, configured to cool the heated refrigerant fluid through cyclic thermodynamic transformations, including compression, cooling, condensation, expansion and vaporization;
- a carbon capture unit comprising at least one absorber and one desorber, the absorber being configured to absorb carbon dioxide from a flue gas stream through absorption in a solvent stream and the desorber being configured to separate a carbon dioxide rich gas stream from the solvent stream and comprising heating the solvent stream, the carbon capture unit additionally comprising a carbon capture cooling unit comprising heat exchangers configured to cool down the solvent from the desorber, the flue gas and the carbon dioxide rich gas stream through heating of a refrigerant fluid and also comprising a closed thermodynamic refrigerant fluid refrigeration cycle, configured to cool the heated refrigerant fluid through cyclic thermodynamic transformations, including compression, cooling, condensation, expansion and vaporization;
- wherein the natural gas cooling unit and the carbon capture cooling unit are integrated by sharing at least part of the apparatuses and the same refrigerant fluid.
Dependencies are inferred from the claim text.