VAPORIZATION DEVICE FOR LOW-TEMPERATURE LIQUEFIED GAS
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United States of America Patent
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Dec 24, 2015
app pub date -
Mar 18, 2014
filing date -
Apr 8, 2013
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Abstract
A vaporization device (10) for a low-temperature liquefied gas is provided with: a plurality of heat-transfer pipes (20) into which liquefied natural gas (LNG) is introduced; upper headers (24) which cause natural gas (NG) flowing out from the plurality of heat-transfer pipes (20) to converge; first troughs (28) which supply seawater to the plurality of heat-transfer pipes (20) such that the seawater flows down along outer surfaces of the plurality of heat-transfer pipes (20); and second troughs (36) which drop seawater onto the upper headers (24) from above such that the seawater flows down along outer surfaces of the upper headers (24). In the plurality of heat-transfer pipes (20), the LNG is heated by being subjected to heat exchange with the seawater. In the upper headers (24), vapourized NG which has been heated in the plurality of heat-transfer pipes (20) is heated by being subjected to heat exchange with the seawater flowing down along the outer surfaces of the upper headers (24).
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