Method For Vaporizing Cryogenic Liquid Through Heat Exchange Using Calorigenic Fluid
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsMaurice Bosquain, Marc Wagner, Philippe Grigoletto, Daniel Machon Diez De Baldeon, Alain Briglia
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Abstract
A method of vaporizing cryogenic liquid, for example liquefied natural gas, by heat exchange with a calorigenic fluid, for example gaseous nitrogen is provided.
Claims18
1-10. (canceled)
A method for heating up a first fluid by heat exchange with a second fluid in a plate and fin heat exchanger in which the first fluid is heated up in a first series of separated passages and the second fluid is cooled down in a second series of separated passages, comprising:
- separating each passage of the first series from the nearest passage of the second series by an auxiliary passage containing fins in which an inert gas circulates.
A method of starting a plate and fin heat exchanger in which, at full capacity, a first fluid is heated up by heat exchange with a second fluid in a plate and fin heat exchanger, the first fluid being heated up in a first series of separated passages and the second fluid being cooled down in a second series of separated passages, comprising
- separating each passage of the first series from the nearest passage of the second series by an auxiliary passage containing fins and in which during start-up an inert gas at a temperature lower than ambient temperature, possibly at cryogenic temperature, is sent into at least one auxiliary passage in order to get down to temperature more swiftly.
Dependencies are inferred from the claim text.