SYSTEM AND METHOD FOR LIQUEFACTION OF NATURAL GAS
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United States of America Patent
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Issued Date -
Oct 27, 2016
app pub date -
Dec 26, 2014
filing date -
Dec 26, 2013
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Abstract
By controlling an excessive rise in the temperature of the material gas that is introduced into the liquefaction unit following the compression by a compressor, the temperature of the material gas may be adjusted to the temperature level at the introduction point of the liquefaction unit. A system (1) for the liquefaction of natural gas, comprises a first expander (3) for expanding natural gas under pressure as material gas; a first cooling unit (10, 11, 12) for cooling the material gas; a distillation unit (15) for reducing or eliminating a heavy component in the material gas by distilling the material gas cooled by the first cooler; a first compressor (4) for receiving a top fraction of the material gas from which the heavy component was reduced or eliminated by the distillation unit; and a liquefaction unit (21) for liquefying a gas phase component separated from the compressed material gas compressed by the first compressor by exchanging heat with a refrigerant.
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