Method and apparatus for vaporizing a liquid
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsAurelie LUONG, Bhadri PRASAD
Life of this patent
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Abstract
In a method for vaporizing a liquid in a heat exchanger, a liquid vaporizes in the heat exchanger to form a gas which is sent to a user via a first pipe in normal operation, wherein if the rate of change of the rate of flow of liquid sent to the exchanger exceeds a threshold, the first pipe is closed and fluid, which may be gas vaporized in the heat exchanger and/or liquid not vaporized in the exchanger, is discharged into the atmosphere or to a flare stack through a second pipe and a valve, the opening of the valve being regulated by the fluid flow rate measured in the second pipe.
Claims9
A method for vaporizing a liquid in a heat exchanger in which a liquid vaporizes in the heat exchanger to form a gas which is sent to a user via a first pipe in normal operation, wherein if the rate of change of the rate of flow of liquid sent to the exchanger exceeds a threshold, the first pipe is closed and fluid, which may be gas vaporized in the heat exchanger and/or liquid not vaporized in the exchanger, is discharged into the atmosphere or to a flare stack through a second pipe and a valve, the opening of the valve being regulated by the fluid flow rate measured in the second pipe.
An apparatus for vaporizing a liquid comprising a heat exchanger in which a liquid vaporizes to form a gas, a first pipe for sending the gas formed to a user in normal operation, a second pipe connected to the heat exchanger to send gas vaporized in the heat exchanger and/or liquid not vaporized in the heat exchanger to the atmosphere or to a flare stack, a detector for detecting whether the rate of change of the rate of flow of liquid sent to the exchanger exceeds a threshold, a first regulating means for regulating the opening of a valve in the second pipe according to the flow rate measured in the second pipe, a second regulating means for regulating the opening of the valve in the second pipe according to the pressure of the gas formed downstream of the heat exchanger, and a means allowing the valve to be connected selectively to the first and to the second regulating means,
Dependencies are inferred from the claim text.