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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
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.
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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
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。
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