APPARATUS AND METHOD FOR RELIQUEFACTION OF BOIL-OFF GAS OF VESSEL

Title:

APPARATUS AND METHOD FOR RELIQUEFACTION OF BOIL-OFF GAS OF VESSEL

Document Type and Number:

WIPO Patent Application WO/2018/062601

Kind Code:

A1

Abstract:

The present invention relates to an apparatus and a method for reliquefaction of boil-off gas generated in a liquefied gas storage tank applied to a vessel. The apparatus for reliquefaction of boil-off gas for a vessel, according to the present invention, which is a reliquefaction apparatus for reliquefying boil-off gas generated in a liquefied gas storage tank installed on a vessel, comprises: a compression unit for compressing the boil-off gas discharged from the storage tank; and a heat exchanger for heat-exchanging the compressed boil-off gas compressed by the compression unit with the boil-off gas discharged from the storage tank, wherein the apparatus for reliquefaction of boil-off gas for a vessel further comprises: a first expansion means for dividing the boil-off gas passing through the heat exchanger into at least two flows including a first flow and a second flow, and expanding the divided first flow; a first intercooler for cooling the second flow remaining after the division of the first flow by using the first flow expanded by the expansion means as a refrigerant; and a receiver for receiving a second flow having passed through the first intercooler, in which a downstream pressure of the compression unit is controlled by a flow discharged from the receiver.

Inventors:

LEE SEUNG CHUL (KR)
JANG NA HYUNG (KR)
JANG YOON AH (KR)
KIM SEON JIN (KR)
KIM WON SEOK (KR)
MOON YOUNG SIK (KR)
CHOI DONG KYU (KR)

Application Number:

PCT/KR2016/011657

Publication Date:

April 05, 2018

Filing Date:

October 17, 2016

Export Citation:

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Assignee:

DAEWOO SHIPBUILDING & MARINE (KR)

International Classes:

B63B25/16; F17C5/02; F17C6/00; F17C9/02; F17C13/00

Foreign References:

KR101519541B1	2015-05-13
KR101496577B1	2015-02-26
KR20150101620A	2015-09-04
KR101459962B1	2014-11-07
KR101617022B1	2016-04-29

Other References: