Process and device for vaporizing purge liquid from a cryogenic liquid vaporizer
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l’Exploitation des Procedes Georges Claude
InventorBenoit DAVIDIAN
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Abstract
Process for vaporizing purge liquid from a cryogenic liquid vaporizer, the liquid containing at least one impurity, in which the purge liquid is withdrawn from a bath of liquid surrounding the vaporizer or resulting from the vaporizer, all of the purge liquid is vaporized in a heater, characterized in that the content of the at least one impurity in at least one portion, or even all of the heated vaporized liquid is analysed and the flow rate of at least one portion, or even all of the heated vaporized liquid is measured.
Claims17
A process for vaporizing purge liquid from a cryogenic liquid vaporizer, the liquid containing at least one impurity, the process comprising the steps of:
- withdrawing the purge liquid from a bath of liquid surrounding the vaporizer or resulting from the vaporizer;
- vaporizing all of the purge liquid in a heater;
- analyzing the content of the at least one impurity in at least one portion of the heated vaporized liquid;
- and
- measuring the flow rate of at least one portion of the heated vaporized liquid.
A device for vaporizing purge liquid from a cryogenic liquid vaporizer, the liquid containing at least one impurity, the device comprising:
- a cryogenic liquid vaporizer;
- a line for withdrawing the purge liquid from a bath of liquid surrounding the vaporizer or resulting from the vaporizer;
- a heater configured to vaporize the purge liquid;
- a flowmeter and an analyser configured to measure and analyze the content of the at least one impurity of the purge liquid;
- means for sending at least one portion of the vaporized purge liquid to the analyser in order to analyse the content of at least one impurity;
- and
- a line for sending at least one portion of the vaporized purge liquid to the flowmeter.
Dependencies are inferred from the claim text.