Invention Grant
- Patent Title: Method for denitrogenation of natural gas with or without helium recovery
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Application No.: US15029107Application Date: 2014-10-14
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Publication No.: US10006699B2Publication Date: 2018-06-26
- Inventor: Alain Briglia , Selim Chouik
- Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
- Applicant Address: FR Paris
- Assignee: L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
- Current Assignee: L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
- Current Assignee Address: FR Paris
- Agent Justin K. Murray
- Priority: FR1360138 20131018
- International Application: PCT/FR2014/052606 WO 20141014
- International Announcement: WO2015/055938 WO 20150423
- Main IPC: F25J3/02
- IPC: F25J3/02
Abstract:
The invention relates to a method for denitrogenation of natural gas by distillation, in which natural gas cooled in an exchange line is separated in a system of columns including at least one column, a nitrogen-enriched gas is drawn from one column of the system of columns and is heated in the exchange line, a methane-enriched liquid is drawn from one column of the system of columns, pressurized and vaporized in the exchange line at at least one vaporization pressure, and at least one portion of the cooled natural gas expands in gaseous form in a turbine and is sent to one column of the system of columns in gaseous form.
Public/Granted literature
- US20160245584A1 METHOD FOR DENITROGENATION OF NATURAL GAS WITH OR WITHOUT HELIUM RECOVERY Public/Granted day:2016-08-25
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