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Patent Searching and Data


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)
Application Number:
PCT/KR2016/011294
Publication Date:
October 05, 2017
Filing Date:
October 10, 2016
Export Citation:
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Assignee:
DAEWOO SHIPBUILDING & MARINE (KR)
International Classes:
B63B25/16; F17C6/00; F17C9/02
Foreign References:
KR101459962B12014-11-07
KR101356003B12014-02-05
KR101496577B12015-02-26
KR101334002B12013-11-27
KR101557571B12015-10-05
Attorney, Agent or Firm:
AIP PATENT & LAW FIRM (KR)
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