公开(公告)号：WO2011156630A3

公开(公告)日：2012-04-12

申请号：PCT/US2011039844

申请日：2011-06-09

Applicant: CHEVRON USA INC ,  HARTONO JOHN S ,  MARTELLA PAUL C

Inventor： HARTONO JOHN S ,  MARTELLA PAUL C

IPC: B63B25/16 ,  B63H21/12 ,  B63H21/38 ,  F17C13/12

CPC classification number: F01K13/00 ,  B63B17/0027 ,  B63B25/16 ,  B63H21/02 ,  B63H21/12 ,  B63J99/00 ,  B63J2099/003 ,  F23K5/002 ,  F23K2401/20 ,  Y02T70/5263

Abstract: A liquefied natural gas (LNG) transport vessel for transporting liquefied natural gas (LNG) is disclosed which is capable of storing excess boil off gas BOG until needed for combustion in one or more combustion apparatus on the vessel. A method for managing the delivery of the BOG to the combustion apparatus is also described. The LNG vessel includes at least one insulated LNG storage tank which stores LNG. A first stage LNG receiver receives and stores BOG from the at least one LNG storage tank. A second stage or high pressure BOG storage tank receives compressed BOG from the receiver and stores the BOG as needed for combustion by one or more combustion apparatus of the vessel. A pressure regulator allows BOG gas to be delivered to the combustion apparatus if there is sufficient pressure in the high pressure storage tank to passively deliver the BOG at a predetermined delivery pressure. If the pressure in the high pressure BOG storage tank is insufficient to passively delivery the BOG to combustion apparatus, then a combustion apparatus compressor may be used to actively increase the pressure in BOG such that the BOG is delivered at the necessary delivery pressure. If there is still insufficient BOG in the high pressure BOG storage tank, then it may be necessary to supply supplemental auxiliary fuel to meet the needs of the combustion apparatus.

Abstract translation: 公开了用于运输液化天然气（LNG）的液化天然气（LNG）运输船，其能够储存多余的蒸发气体BOG，直到在容器中的一个或多个燃烧装置中燃烧需要。 还描述了用于管理BOG到燃烧装置的传送的方法。 LNG船包括至少一个储存LNG的隔热LNG储罐。 第一级LNG接收器接收并存储来自至少一个LNG储罐的BOG。 第二级或高压BOG储存罐从接收器接收压缩的BOG，并根据需要通过容器的一个或多个燃烧装置燃烧BOG。 压力调节器允许BOG气体在高压储罐中有足够的压力被输送到燃烧装置，以在预定的输送压力下被动地输送BOG。 如果高压BOG储罐中的压力不足以将BOG被动地输送到燃烧装置，则可以使用燃烧装置压缩机来积极地增加BOG中的压力，使得BOG在必要的输送压力下被输送。 如果高压BOG储罐中的BOG仍然不足，则可能需要提供辅助辅助燃料以满足燃烧装置的需要。