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Boil-off gas treatment system

一种蒸发气体、处理系统的技术，应用在蒸发气体处理系统领域，能够解决浪费BOG化学能等问题，达到简单维护及修理、降低初始安装成本、实现多样化的效果

Inactive Publication Date: 2018-01-05
DAEWOO SHIPBUILDING & MARINE ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The gas combustion unit inevitably incinerates excess BOG not used in the ship to regulate the pressure of the storage tank, and has a problem of wasting chemical energy of BOG generated by combustion

Method used

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Embodiment Construction

[0042] The above and other aspects, advantages and objects of the invention will become apparent from the accompanying drawings and the following description of exemplary embodiments of the invention.

[0043] Hereinafter, exemplary embodiments of the present invention will be explained in detail with reference to the accompanying drawings. Throughout the drawings, the same components will be denoted by the same reference numerals.

[0044] In general, the International Maritime Organization regulates nitrogen oxides (NO X ) and sulfur oxides (SO X ) emissions, and recent attempts to regulate carbon dioxide (CO 2 ) emissions. Specifically, for nitrogen oxides (NO X ) and sulfur oxides (SO X ) was raised in 1997 by the Agreement on the Prevention of Marine Pollution from Ships (MARPOL; The prevention of Maritime Pollution from Ships). Eight years later, the agreement fulfilled the requirements for implementation and entered into force in May 2005, and the regulation is no...

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Abstract

Disclosed herein is a boil-off gas treatment system. The boil-off gas treatment system includes a compressor compressing boil-off gas generated in an LNG storage tank of a ship or a floating structure, a heat exchanger cooling the compressed boil-off gas through heat exchange with boil-off gas to be supplied to the compressor, an expansion unit performing adiabatic expansion of the boil-off gas cooled by the heat exchanger, a gas-liquid separator performing gas / liquid separation of the boil-off gas subjected to adiabatic expansion by the expansion unit and supplying liquefied natural gas to the LNG storage tank, and a bypass line through which the boil-off gas subjected to adiabatic expansion is supplied from a downstream side of the expansion unit to a downstream side of the gas-liquid separator. According to the invention, initial mounting cost is reduced, sizes of devices are reduced, and simple maintenance and repairing are allowed.

Description

[0001] The present invention is a divisional application of the invention patent application with the application number 201580010403.7 and the invention name "Evaporative Gas Treatment System" filed on February 27, 2015. technical field [0002] The present invention relates to a boil-off gas treatment system, and more particularly to a boil-off gas treatment system comprising: a compressor for compressing boil-off gas generated in a liquefied natural gas storage tank of a ship structure or a floating structure; a heat exchanger , cooling the compressed boil-off gas by heat exchange with the boil-off gas to be supplied to the compressor; an expansion unit performing adiabatic expansion of the boil-off gas cooled by the heat exchanger; and gas-liquid a separator that performs gas / liquid separation of the boil-off gas subjected to the adiabatic expansion performed by the expansion unit, and supplies the liquefied natural gas to the liquefied natural gas storage tank, in which a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B25/16B63H21/38F02M21/02
CPCB63H21/38F02M21/0215F02M21/0224F02M21/0245F02M21/0287B63J2099/003F25J1/0025F25J1/004F25J1/0202F25J1/023F25J1/0277F17C9/02F17C2221/033F17C2223/0161F17C2223/033F17C2223/043F17C2223/047F17C2225/0123F17C2265/017F17C2265/033F17C2265/037F17C2265/038F17C2265/066F17C2270/0105F25J2245/02Y02T10/30Y02T70/50Y02T90/40B63B25/16F17C7/04
Inventor 李准采金南守郑济宪朴青气
Owner DAEWOO SHIPBUILDING & MARINE ENG CO LTD
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