Title:
BOIL-OFF GAS RE-LIQUEFYING DEVICE AND METHOD FOR SHIP
Document Type and Number:
WIPO Patent Application WO/2017/171166
Kind Code:
A1
Abstract:
Disclosed is a re-liquefying device using a boil-off gas as a cooling fluid so as to re-liquefy the boil-off gas generated from a liquefied gas storage tank provided in a ship. A boil-off gas re-liquefying device for a ship comprises: a plurality of compressors for compressing, in multiple stages, a boil-off gas discharged from a storage tank; a heat exchanger for heat exchanging the boil-off gas, which has been compressed in multiple stages by means of the plurality of compressors, and the boil-off gas discharged from the storage tank; a first expanding means for expanding a part of the boil-off gas that has been compressed by means of the plurality of compressors and then has passed through the heat exchanger; a first intermediate cooler for lowering the temperature of the other part of the boil-off gas that has been compressed by means of the plurality of compressors and then has passed through the heat exchanger; a second expanding means for expanding a part of the boil-off gas that has passed through the first intermediate cooler; a second intermediate cooler for lowering the temperature of the other part of the boil-off gas that has passed through the first intermediate cooler; and a third expanding means for expanding the boil-off gas that has passed through the second intermediate cooler, wherein the boil-off gas that has been expanded by means of the first expanding means is used as a refrigerant in the first intermediate cooler, and the boil-off gas that has been expanded by means of the second expanding means is used as a refrigerant in the second intermediate cooler.
Inventors:
SHIN HYUN JUN (KR)
AHN SUNG IL (KR)
CHOI DONG KYU (KR)
MOON YOUNG SIK (KR)
AN SU KYUNG (KR)
LEE SEUNG CHUL (KR)
AHN SUNG IL (KR)
CHOI DONG KYU (KR)
MOON YOUNG SIK (KR)
AN SU KYUNG (KR)
LEE SEUNG CHUL (KR)
Application Number:
PCT/KR2016/011294
Publication Date:
October 05, 2017
Filing Date:
October 10, 2016
Export Citation:
Assignee:
DAEWOO SHIPBUILDING & MARINE (KR)
International Classes:
B63B25/16; F17C6/00; F17C9/02
Foreign References:
KR101459962B1 | 2014-11-07 | |||
KR101356003B1 | 2014-02-05 | |||
KR101496577B1 | 2015-02-26 | |||
KR101334002B1 | 2013-11-27 | |||
KR101557571B1 | 2015-10-05 |
Attorney, Agent or Firm:
AIP PATENT & LAW FIRM (KR)
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