(19)
(11) EP 2 442 056 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.03.2018 Bulletin 2018/10

(43) Date of publication A2:
18.04.2012 Bulletin 2012/16

(21) Application number: 11185499.8

(22) Date of filing: 17.10.2011
(51) International Patent Classification (IPC): 
F25J 1/00(2006.01)
F17C 1/00(2006.01)
 F25J 1/02(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
Designated Extension States:
BA ME

(30) Priority: 15.10.2010 KR 20100100937
22.10.2010 KR 20100103733
29.10.2010 KR 20100107089

(71) Applicant: Daewoo Shipbuilding&Marine Engineering Co., Ltd.
Seoul 100-180 (KR)

(72) Inventors:
  • Yoo, Seong Jin
    656-907 Geoje-si, Gyeongsangnam-do (KR)
  • Lee, Jung Han
    656-753 Geoje-si, Gyeongsangnam-do (KR)
  • Moon, Young Sik
    Gwangmyeong-si, Gyeonggi-do 423-733 (KR)
  • Jung, Je Heon
    656-752 Geoje-si, Gyeongsangnam-do (KR)
  • Lee, Jae Yeol
    448-161 Yongin-si, Gyeonggi-do (KR)
  • Choi, Dong Kyu
    656-757 Geoje-si, Gyeongsangnam-do (KR)
  • Yu, Jin Yeol
    656-050 Geoje-si, Gyeongsangnam-do (KR)

(74) Representative: Intès, Didier Gérard André et al
Cabinet Beau de Loménie 158 rue de l'Université
75340 Paris Cedex 07
75340 Paris Cedex 07 (FR)

   


(54) Method for producing pressurized liquefied natural gas and production system therefor


(57) A method for producing pressurized liquefied natural gas and a production system therefor are provided. The method for producing pressurized liquefied natural gas includes: performing a dehydration process (S11) to remove water from natural gas supplied from a natural gas field, without a process of removing acid gas from the natural gas; and performing a liquefaction process (S12) to produce pressurized liquefied natural gas by liquefying the natural gas, which has undergone the dehydration process, at a pressure of 13 to 25 bar and a temperature of -120 to - 95°C, without a process of fractionating natural gas liquid (NGL). Accordingly, it is possible to reduce plant construction costs and maintenance expenses and reduce LNG production costs. In addition, it is possible to guarantee high economic profit and reduce payback period in small and medium-sized gas fields, from which economic feasibility could not be ensured by the use of a conventional method.







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