Presented at Spring Conference, April 2015 in Hamburg by
Adam Brostow, Air Products
NB AT THE REQUEST OF THE AUTHOR, THIS PAPER IS AVAILABLE ONLY TO GPA EUROPE MEMBERS BY APPLICATION TO THE GPA EUROPE ADMINISTRATION OFFICE
With growth in the LNG industry and as new feed gas supplies from unconventional sources are considered, many natural gas liquefaction projects require more effective nitrogen removal options, presenting new challenges for effective and efficient LNG plant design. Historically it has been relatively easy to remove nitrogen from LNG to the fuel system. This is particularly true when nitrogen content in the feed is low and the fuel is going to boilers for steam turbines or large industrial gas turbines. However, many modern LNG plants require more sophisticated nitrogen removal methods because of increasing nitrogen content in the feed gas, lower fuel demand and/or lower tolerance for nitrogen content in the fuel. Optimum facility design may require increased integration with the liquefaction unit. These increased requirements may make it difficult to reach the key goals for the nitrogen removal solution: flexible, efficient, and minimal impact on operation of the liquefaction process. The paper presents several options for nitrogen removal and compares the advantages and capabilities of each.
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