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公开(公告)号：US10788260B2
公开(公告)日：2020-09-29
申请号：US15671622
申请日：2017-08-08
摘要： Described herein is a method of removing refrigerant from a natural gas liquefaction system in which vaporized mixed refrigerant is withdrawn from the closed-loop refrigeration circuit and introduced into a distillation column so as to be separated into an overhead vapor enriched in methane and a bottoms liquid enriched in heavier components. Overhead vapor is withdrawn from the distillation column to form a methane enriched stream that is removed from the liquefaction system, and bottoms liquid is reintroduced from the distillation column into the closed-loop refrigeration circuit. Also described are methods of altering the rate of production in a natural gas liquefaction system in which refrigerant is removed as described above, and a natural gas liquefaction systems in which such methods can be carried out.
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公开(公告)号：US10393429B2
公开(公告)日：2019-08-27
申请号：US15091883
申请日：2016-04-06
摘要： A method for controlling the flow of natural gas and refrigerant in the main heat exchanger of a natural gas liquefaction facility. The method provides for the automated control of a flow rate of a natural gas feed stream through a heat exchanger based on one or more process variables and set points. The flow rate of refrigerant streams through the heat exchanger is controlled by different process variables and set points, and is controlled independently of the flow rate of the natural gas feed stream.
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公开(公告)号：US20160102908A1
公开(公告)日：2016-04-14
申请号：US14511774
申请日：2014-10-10
IPC分类号： F25J1/00
CPC分类号： F25J1/0022 , F25J1/0055 , F25J1/0092 , F25J1/0097 , F25J1/0212 , F25J1/0214 , F25J1/0216 , F25J1/0245 , F25J1/0248 , F25J1/0249 , F25J1/025 , F25J3/0209 , F25J3/0233 , F25J3/0238 , F25J2200/02 , F25J2200/74 , F25J2205/30 , F25J2210/62 , F25J2245/02 , F25J2260/20 , F25J2270/902 , F25J2270/904 , F25J2290/62
摘要： Described herein is a method of removing refrigerant from a natural gas liquefaction system in which vaporized mixed refrigerant is withdrawn from the closed-loop refrigeration circuit and introduced into a distillation column so as to be separated into an overhead vapor enriched in methane and a bottoms liquid enriched in heavier components. Overhead vapor is withdrawn from the distillation column to form a methane enriched stream that is removed from the liquefaction system, and bottoms liquid is reintroduced from the distillation column into the closed-loop refrigeration circuit. Also described are methods of altering the rate of production in a natural gas liquefaction system in which refrigerant is removed as described above, and a natural gas liquefaction systems in which such methods can be carried out.
摘要翻译： 这里描述了从天然气液化系统中去除制冷剂的方法，其中蒸发的混合制冷剂从闭环制冷回路中排出并被引入蒸馏塔，以分离成富含甲烷和底部液体的塔顶蒸气 丰富了较重的成分。 蒸馏塔从蒸馏塔中排出以形成从液化系统中除去的富含甲烷的物流，并将底部液体从蒸馏塔重新引入闭环制冷回路。 还描述了如上所述改变在其中除去制冷剂的天然气液化系统中的生产率的方法，以及可以进行这种方法的天然气液化系统。
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公开(公告)号：US20180058752A1
公开(公告)日：2018-03-01
申请号：US15671622
申请日：2017-08-08
摘要： Described herein is a method of removing refrigerant from a natural gas liquefaction system in which vaporized mixed refrigerant is withdrawn from the closed-loop refrigeration circuit and introduced into a distillation column so as to be separated into an overhead vapor enriched in methane and a bottoms liquid enriched in heavier components. Overhead vapor is withdrawn from the distillation column to form a methane enriched stream that is removed from the liquefaction system, and bottoms liquid is reintroduced from the distillation column into the closed-loop refrigeration circuit. Also described are methods of altering the rate of production in a natural gas liquefaction system in which refrigerant is removed as described above, and a natural gas liquefaction systems in which such methods can be carried out.
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公开(公告)号：US20170292783A1
公开(公告)日：2017-10-12
申请号：US15091883
申请日：2016-04-06
IPC分类号： F25J1/00
CPC分类号： F25J1/0022 , F25J1/005 , F25J1/0055 , F25J1/0072 , F25J1/0087 , F25J1/0204 , F25J1/0216 , F25J1/0247 , F25J1/0249 , F25J1/0252 , F25J1/0298 , F25J2280/10
摘要： A method for controlling the flow of natural gas and refrigerant in the main heat exchanger of a natural gas liquefaction facility. The method provides for the automated control of a flow rate of a natural gas feed stream through a heat exchanger based on one or more process variables and set points. The flow rate of refrigerant streams through the heat exchanger is controlled by different process variables and set points, and is controlled independently of the flow rate of the natural gas feed stream.
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