METHOD FOR SEPARATING HEAVY HYDROCARBONS FROM A HYDROCARBON-RICH FRACTION
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United States of America Patent
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Sep 24, 2015
app pub date -
Oct 2, 2013
filing date -
Oct 16, 2012
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Abstract
Disclosed is a method for separating heavy hydrocarbons, in particular C6+ hydrocarbons and/or aromatic hydrocarbons, such as benzene, from a hydrocarbon-rich fraction to be liquefied, in particular from natural gas, the hydrocarbon-rich fraction being precooled prior to separation of the heavy hydrocarbons. One or a plurality of C5 hydrocarbon-rich fractions are mixed into the hydrocarbon-rich fraction prior to the pre-cooling thereof and/or into the separation column used for separating the heavy hydrocarbons at least in such a quantity, preferably in liquid form, that freezing of the heavy hydrocarbons to be separated is prevented.
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