System to increase capacity of LNG-based liquefier in air separation process

The capacity of a nitrogen liquefier (2) cooled by LNG (194) and providing refrigeration to a cryogenic air separation unit (1) is increased by provision of a supplemental compressor (3) separate from the existing compressor(s) in the liquefier unit to boost the pressure of at least a portion of low...

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Bibliographic Details
Main Authors DEE, DOUGLAS PAUL, CHOE, JUNG SOO, HERRON, DONN MICHAEL
Format Patent
LanguageEnglish
French
German
Published 01.08.2012
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:The capacity of a nitrogen liquefier (2) cooled by LNG (194) and providing refrigeration to a cryogenic air separation unit (1) is increased by provision of a supplemental compressor (3) separate from the existing compressor(s) in the liquefier unit to boost the pressure of at least a portion of low pressure nitrogen (182) from a dual column distillation column system (114,116) to create additional or replacement feed (184) to the LNG-based liquefier (2).
Bibliography:Application Number: EP20070111391