(19)
(11) EP 3 285 034 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.04.2018 Bulletin 2018/17

(43) Date of publication A2:
21.02.2018 Bulletin 2018/08

(21) Application number: 17188470.3

(22) Date of filing: 20.05.2014
(51) International Patent Classification (IPC): 
F25J 1/00(2006.01)
F25J 5/00(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 20.05.2013 KR 20130056478

(62) Application number of the earlier application in accordance with Art. 76 EPC:
14800817.0 / 3001128

(71) Applicant: Korea Gas Corporation
Gyeonggi-do 463-754 (KR)

(72) Inventors:
  • LEE, Sang Gyu
    137-040 SEOUL (KR)
  • YOON, Ihn Soo
    406-840 INCHEON (KR)
  • CHO, Byoung hak
    406-738 INCHEON (KR)
  • SOHN, Young Soon
    406-734 INCHEON (KR)
  • CHA, Kyu Sang
    403-828 INCHEON (KR)
  • PARK, Chang Won
    406-761 INCHEON (KR)
  • KWON, Yong Soo
    405-824 INCHEON (KR)

(74) Representative: Cabinet Laurent & Charras 
Le Contemporain 50 Chemin de la Bruyère
69574 Dardilly Cedex
69574 Dardilly Cedex (FR)

   


(54) NATURAL GAS LIQUEFACTION PROCESS


(57) A natural gas liquefaction process according to the present invention uses a single closed-loop refrigeration cycle employing a mixed refrigerant, thereby having a simple structure for the liquefaction process and allowing the liquefaction process to be easily operated. Furthermore, the present invention cools natural gas after one stream is separated into two streams, thereby having an excellent efficiency of the liquefaction process.







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