PROCESS AND APPARATUS FOR HEAVY HYDROCARBON REMOVAL FROM LEAN NATURAL GAS BEFORE LIQUEFACTION

A process is described herein for removing high freeze point hydrocarbons, including benzene compounds, from a mixed feed gas stream. The process involves cooling process streams in one or more heat exchangers and separating condensed compounds in multiple separators to form a methane-rich product g...

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Bibliographic Details
Main Authors PATEL, SANJIV N, BALKO, CATHERINE L, GASKIN, THOMAS K, YAMIN, FEREIDOUN
Format Patent
LanguageEnglish
French
Published 09.01.2024
Subjects
BLASTING
COMBINED HEATING AND REFRIGERATION SYSTEMS
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
MIXTURES BY PRESSURE AND COLD TREATMENT
REFRIGERATION OR COOLING
WEAPONS
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Summary:A process is described herein for removing high freeze point hydrocarbons, including benzene compounds, from a mixed feed gas stream. The process involves cooling process streams in one or more heat exchangers and separating condensed compounds in multiple separators to form a methane-rich product gas stream. Select solvent streams from a fractionation train and/or separate solvent streams are employed to lower the freeze point of one or more streams that contain high freeze point hydrocarbons. A corresponding system also is disclosed. L'invention concerne un procédé pour éliminer des hydrocarbures à point de congélation élevé, y compris des composés de benzène, d'un courant gazeux d'alimentation mélangé. Le procédé implique le refroidissement de courants de traitement dans un ou plusieurs échangeurs thermiques et la séparation des composés condensés dans plusieurs séparateurs pour former un courant de produit gazeux riche en méthane. Des courants sélectionnés de solvant provenant d'un train de fractionnement et/ou des courants séparés de solvant sont employés pour abaisser le point de congélation d'un ou plusieurs courants qui contiennent des hydrocarbures à point de congélation élevé. L'invention concerne également un système correspondant.
Bibliography:Application Number: CA20152942675