Patent ID: 9695984
Date: 2017-07-04
CPC Classifications: F17C

Claim:
1. A plant for regasification of liquefied natural gas (LNG), comprising: at least one pump boosting LNG pressure; an LNG/coolant heat exchanger producing natural gas (NG) from LNG being flowed from the at least one boosting pump; a closed coolant loop extending through the LNG/coolant heat exchanger and including at least one first heat exchanger, a coolant from the at least one first heat exchanger being passed through the LNG/coolant heat exchanger as a gas and leaving in a condensed state so as to produce NG by thermal exchange; a heating medium being used within the at least one first heat exchanger configured to provide coolant in a gaseous state, and a second heat exchanger configured to provide heated liquid coolant and being part of the closed coolant loop, wherein an NG/coolant heat exchanger is arranged in connection with the LNG/coolant heat exchanger and is connected to the closed coolant loop, whereby LNG is preheated within the LNG/coolant heat exchanger and NG is trim heated within the NG/coolant heat exchanger using liquid coolant from the second heat exchanger; and a coolant supply that supplies the coolant to the closed coolant loop, wherein the first heat exchanger and the second heat exchanger are connected in series in the closed coolant loop, and the NG/coolant heat exchanger is connected between the first heat exchanger and the second heat exchanger in series in the closed coolant loop so that all coolant from the coolant supply is supplied to the second heat exchanger first, then to the NG/coolant heat exchanger and finally to the first heat exchanger.