公开(公告)号：US20230204284A1

公开(公告)日：2023-06-29

申请号：US18054635

申请日：2022-11-11

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Paul DAVIES ,  James Lee HARRIS, JR. ,  Emery Jay THOMAS ,  Gregg SAPP

IPC: F25J1/00 ,  C09K5/04 ,  F25J1/02

CPC classification number: F25J1/0022 ,  C09K5/042 ,  C09K5/045 ,  F25J1/0278 ,  F25J1/0062 ,  F25J1/0097 ,  F25J1/0256 ,  C09K2205/126

Abstract: Methods and systems for liquefying natural gas using environmentally-friendly low combustibility refrigerants are provided. Methods of liquefaction include cooling a fluid in an LNG facility via indirect heat exchange with an environmentally-friendly low combustibility refrigerants that are propane, ethane and methane mixed with small amounts of fluorinated olefin, but still within close proximity to the boiling points of the pure refrigerants such that the mixed refrigerants can still be used in an optimized cascade process.

公开(公告)号：US20140150492A1

公开(公告)日：2014-06-05

申请号：US14068248

申请日：2013-10-31

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Paul DAVIES ,  James Lee HARRIS, JR. ,  Emery Jay THOMAS ,  Gregg SAPP

IPC: F25J1/02 ,  F25J1/00

CPC classification number: F25J1/0022 ,  C09K5/042 ,  C09K5/045 ,  C09K2205/12 ,  C09K2205/22 ,  F25J1/0097 ,  F25J1/0256 ,  F25J1/0278

Abstract: Methods and systems for liquefying natural gas using nonflammable refrigerants are provided. Methods of liquefaction include cooling a natural gas stream via indirect heat exchange with a first nonflammable refrigerant selected from the group consisting of: difluoromethane, pentafluoromethane, trifluoromethane, hexafluoroethane, tetrafluoroethane, pentafluorethane, trifluoroethane, pentafluoroethane, any derivative thereof, and any combination thereof during a first refrigeration cycle; and cooling the natural gas stream via indirect heat exchange with a second refrigerant during a second refrigeration cycle.

Abstract translation: 提供了使用不燃性制冷剂液化天然气的方法和系统。 液化方法包括通过与选自二氟甲烷，五氟甲烷，三氟甲烷，六氟乙烷，四氟乙烷，五氟乙烷，三氟乙烷，五氟乙烷及其任何衍生物的第一不可燃制冷剂的间接热交换及其任何组合来冷却天然气流，以及其任何组合 第一个制冷循环; 以及在第二制冷循环期间通过与第二制冷剂的间接热交换来冷却天然气流。

公开(公告)号：US20140366561A1

公开(公告)日：2014-12-18

申请号：US14280134

申请日：2014-05-16

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Paul Raymond DAVIES ,  James Lee HARRIS, JR.

IPC: F17C5/02

CPC classification number: F25J1/021 ,  F17C2221/033 ,  F17C2223/0161 ,  F17C2227/0157 ,  F17C2265/033 ,  F17C2265/034 ,  F17C2265/05 ,  F25J1/0022 ,  F25J1/0025 ,  F25J1/004 ,  F25J1/0052 ,  F25J1/0208 ,  F25J1/0209 ,  F25J1/0248 ,  F25J1/0278 ,  F25J2235/60 ,  F25J2245/90 ,  F25J2290/62

Abstract: Methods and systems for vaporizing and recovering LNG are provided. One method includes: a) heating at least a portion of the LNG to provide a boil-off gas stream and a liquid quench stream; b) routing the boil-off gas stream and the liquid quench stream to a quench system, wherein the quench system cools the boil-off gas stream to provide a quenched stream; and c) compressing the quenched stream to provide a compressed quenched stream.

Abstract translation: 提供了蒸发和回收LNG的方法和系统。 一种方法包括：a）加热LNG的至少一部分以提供蒸发气流和液体骤冷流; b）将沸腾气体流和液体骤冷流路由到骤冷系统，其中骤冷系统冷却蒸发气流以提供骤冷流; 和c）压缩骤冷流以提供压缩的骤冷流。