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US 4,535,639 AGranted
Vapor spill monitoring method
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsGregory M. Bianchini, Thomas G. McRae
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Abstract
Method for continuous sampling of liquified natural gas effluent from a spill pipe, vaporizing the cold liquified natural gas, and feeding the vaporized gas into an infrared detector to measure the gas composition. The apparatus utilizes a probe having an inner channel for receiving samples of liquified natural gas and a surrounding water jacket through which warm water is flowed to flash vaporize the liquified natural gas.
Claims7
Method for continuous monitoring of LNG composition from a spill pipe comprising:
- positioning the tip of a probe having three concentric spaced tubes in a generally downward orientation in a flow of LNG;
- applying suction on the opposite end of the inside tube to draw a quantity of LNG into the inner tube;
- flowing hot water in through the annular channel between the inner and middle tubes, and out through the annular channel between the middle and outer tubes, to provide heat transfer to vaporize the LNG;
- transporting the vaporized LNG gas to a remote analyzer for determining the composition of the LNG.
1 more element
Dependencies are inferred from the claim text.