Title:
ENHANCED NITROGEN REMOVAL IN AN LNG FACILITY
Document Type and Number:
WIPO Patent Application WO/2009/137168
Kind Code:
A3
Abstract:
An LNG facility employing an enhanced nitrogen removal system that concentrates the amount of nitrogen in the feed stream to a nitrogen removal unit (NRU) to thereby increase the separation efficiency of the NRU. In one embodiment, the nitrogen removal system comprises a multistage separation vessel operable to separate nitrogen from a cooled natural gas stream. At least a portion of the resulting nitrogen-containing stream exiting the multistage separation vessel can be used as a refrigerant, processed to a nitrogen removal unit, and/or utilized as fuel gas for the LNG facility.
Inventors:
RANSBARGER WELDON L (US)
ORTEGO DALE J (US)
ORTEGO DALE J (US)
Application Number:
PCT/US2009/037649
Publication Date:
May 30, 2013
Filing Date:
March 19, 2009
Export Citation:
Assignee:
CONOCOPHILLIPS CO (US)
RANSBARGER WELDON L (US)
ORTEGO DALE J (US)
RANSBARGER WELDON L (US)
ORTEGO DALE J (US)
International Classes:
F25J3/02; F25J1/00; F25J1/02
Foreign References:
| US6070429A | 2000-06-06 | |||
| US20050183452A1 | 2005-08-25 | |||
| US20040231359A1 | 2004-11-25 |
Attorney, Agent or Firm:
HALLER, Lauren, E. (IP Legal Services GroupAttn: Docketing,600 N. Dairy Ashford, MA-113, Houston TX, US)
Download PDF: