Patent ID: 8316665

Claim:
A plant, comprising: a hydrocarbon source configured to provide a processed hydrocarbon feed enriched in C2 and/or C3 hydrocarbons; a C2 or C3 hydrocarbon splitter having a reboiler and an overhead condenser fluidly coupled to the hydrocarbon source and configured to receive the processed hydrocarbon feed; a first closed heat exchange circuit comprising a first heat exchange fluid and thermally coupled to a liquefied natural gas stream and the hydrocarbon splitter such that the first heat exchange fluid receives refrigeration content from the liquefied natural gas stream and provides refrigeration content to the overhead condenser; and a second closed heat exchange circuit comprising a second heat exchange fluid and thermally coupled to a heat source, the hydrocarbon splitter, and the liquefied natural gas stream such that heat from the heat source is provided to the second heat exchange fluid and transferred from the second heat exchange fluid to the reboiler and the liquefied natural gas stream.