Heavy hydrocarbon removal system for lean natural gas liquefaction
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United States of America Patent
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Jun 6, 2023
Grant Date -
Jan 25, 2018
app pub date -
Jul 21, 2016
filing date -
Jul 21, 2016
priority date (Note) -
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Abstract
A system and method for integrated heavy hydrocarbon removal in a liquefaction system having a lean natural gas source. An economizer located between a main cryogenic heat exchanger and a reflux drum is provided to cool an overhead vapor stream against a partially condensed stream. In addition, pressure of the natural gas feed stream is maintained into a scrub column. A pressure drop is provided by a valve located between the economizer and the reflux drum on a partially condensed stream withdrawn from the cold end of the warm section of the main cryogenic heat exchanger.
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