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1. 发明授权

US4444015A Method for recovering power according to a cascaded Rankine cycle by gasifying liquefied natural gas and utilizing the cold potential 失效
标题翻译：通过气化液化天然气和利用冷势根据级联兰金循环回收功率的方法
公开(公告)号：US4444015A
公开(公告)日：1984-04-24
申请号：US228921
申请日：1981-01-27
申请人： Osamu Matsumoto , Ichizo Aoki
发明人： Osamu Matsumoto , Ichizo Aoki
IPC分类号： F01K23/04 , F01K25/10 , F17C9/04 , F01K25/06
CPC分类号： F17C9/04 , F01K23/04 , F01K25/10 , F17C2221/033 , F17C2223/0161 , F17C2223/033 , F17C2225/0123 , F17C2225/036 , F17C2227/0318 , F17C2265/05 , F17C2265/07
摘要： The present invention discloses a method for recovering effective energy as power between liquefied natural gas and a high temperature source by cascading two kinds of Rankine cycles when the liquefied natural gas is re-gasified. The method is characterized in that a first medium performs a first Rankine cycle with the liquefied natural gas as a low temperature source, the first medium being mainly a mixture of hydrocarbons having 1-6 carbon atoms or a mixture of halogenated hydrocarbons of boiling points close to those of said hydrocarbons, the first medium having compositions according to which the vapor curve of gasifying the liquefied natural gas substantially corresponds to the low pressure cooling curve of the first medium, the power generated thereby is recovered by a first turbine during the first Rankine cycle, a second medium having a higher boiling point than said first medium performs a second Rankine cycle with part of said first Rankine cycle as the low temperature source, the second medium, being a single hydrocarbon component having 1-6 carbon atoms or a mixture thereof, a single halogenated hydrocarbon whose boiling point is close to that of this hydrocarbon or a mixture thereof, or ammonia, whose low pressure cooling curve substantially corresponds to the vapor curve of the high pressure first medium, said first and second Rankine cycles are cascaded, and a second turbine is disposed to recover power during the second Rankine cycle.
摘要翻译：本发明公开了一种当液化天然气再气化时，通过级联两种兰金循环来回收有效能量作为液化天然气和高温源之间的功率的方法。该方法的特征在于，第一介质以液化天然气作为低温源进行第一兰金循环，第一介质主要是具有1-6个碳原子的烃或沸点卤代烃的混合物的混合物对于所述烃的那些，第一介质具有根据该组成的气化液化天然气的蒸汽曲线基本上对应于第一介质的低压冷却曲线的组成，由此产生的功率由第一涡轮机在第一兰金具有比所述第一介质沸点高的第二介质执行具有所述第一兰金循环的一部分的第二兰金循环作为低温源，第二介质是具有1-6个碳原子的单一烃组分或混合物其沸点接近该烃或其混合物或氨的单一卤代烃，低压冷却曲线基本上对应于高压第一介质的蒸汽曲线，所述第一和第二兰金循环是级联的，并且设置第二涡轮以在第二兰金循环期间恢复功率。

2. 发明授权

US4388092A Method for processing LNG for Rankine cycle 失效
标题翻译：兰金循环LNG处理方法
公开(公告)号：US4388092A
公开(公告)日：1983-06-14
申请号：US228920
申请日：1981-01-27
申请人： Osamu Matsumoto , Ichizo Aoki
发明人： Osamu Matsumoto , Ichizo Aoki
IPC分类号： F17C9/04 , F25J3/02 , F25J3/00
CPC分类号： F25J3/0233 , F17C9/04 , F25J3/0214 , F25J3/0238 , F25J3/0242 , F17C2221/033 , F17C2223/0161 , F17C2223/033 , F17C2225/0123 , F17C2225/036 , F17C2265/05 , F17C2265/07 , F25J2200/02 , F25J2215/60 , F25J2215/62 , F25J2215/64 , F25J2240/70 , F25J2280/30
摘要： A method is disclosed for processing LNG using a mixed heat medium for performing a Rankine cycle to gasify the LNG. The medium is prepared by batch distillation using only LNG. The method comprises the steps of condensing an upflow vapor in a single distillation column employing part of the LNG in an LNG batch distillation cycle, venting one fraction having low boiling point components mainly containing methane, and accumulating the other fractions containing ethane and components heavier than ethane. The supply of LNG to be distilled in the column is halted. A total condensing operation is performed in which the other fractions are sequentially condensed by part of the LNG at the condenser to sequentially recover and mix each component with the other fractions. LNG is added as the methane component to the recovered mixture of components to prepare a mixed heat medium consisting of components selected from hydrocarbons having 1-6 carbon atoms, or hydrocarbons having 1-6 carbon atoms and nitrogen. The mixed heat medium is stored. A mixed heat medium vapor generated by heat input to the stored mixed heat medium is condensed by LNG and returned to the mixed heat medium; collection and complete gasification of the low boiling point components mainly containing methane and the LNG is gasified by condensation to provide an LNG vapor gas. LNG is gasified by performing the Rankine cycle with the mixed heat medium.
摘要翻译：公开了一种用于使用混合热介质处理LNG来执行朗肯循环以气化LNG的方法。该介质仅通过液化天然气分批蒸馏制备。该方法包括以下步骤：在LNG分批蒸馏循环中使用一部分LNG冷凝在单个蒸馏塔中的上流蒸气，排出主要含有甲烷的低沸点组分的一部分，并且积聚含有乙烷和重于甲烷的组分的其它馏分乙烷在柱中蒸馏的LNG的供应停止。执行总冷凝操作，其中其余部分在冷凝器处由LNG的一部分依次冷凝，以顺序地回收和混合每个组分与其它馏分。将LNG作为甲烷组分添加到回收的组分混合物中，以制备由选自具有1-6个碳原子的烃或具有1-6个碳原子的烃和氮的组分组成的混合热介质。储存混合的热介质。通过输入到储存的混合热介质的热量产生的混合的热介质蒸气由LNG冷凝并返回到混合的热介质中; 主要含有甲烷的低沸点组分的收集和完全气化，并且通过冷凝气化气化LNG以提供LNG蒸气。通过用混合的热介质执行兰金循环来使LNG气化。

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