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    • 2. 发明授权
    • Method for separating a multi-component feed stream using distillation
and controlled freezing zone
    • 使用蒸馏和控制冷冻区分离多组分进料流的方法
    • US5120338A
    • 1992-06-09
    • US669167
    • 1991-03-14
    • William A. Potts, Jr.Eugene R. Thomas
    • William A. Potts, Jr.Eugene R. Thomas
    • F25J3/02
    • F25J3/0209F25J3/0233F25J3/0266F25J2200/02F25J2200/74F25J2205/20F25J2220/66F25J2280/40Y02C10/12Y10S62/927Y10S62/929Y10S62/93
    • The invention relates to a method for separating two primary components of a multi-component feed stream (e.g., methane and nitrogen) in the presence of a third, freezable component (e.g., carbon dioxide) having a relative volatility less than that of either primary component. The inventive process employs both a distillation section and a controlled freezing zone ("CFZ"). The freezable component is allowed to freeze in the CFZ, and the resulting solids are collected at the bottom of the CFZ. The CFZ also produces a vapor overhead product enriched in one of the primary components and a liquid bottom product enriched in the other primary component. The solids of the freezable component are melted and mixed with the CFZ liquid bottom product to form a liquid feed stream for the distillation section which operates like a conventional distillation section, while tolerating significantly high concentrations (i.e., >0.1 mole %) of the freezable component without solids formation, at temperatures well below the freezable component's freezing point.
    • 本发明涉及一种分离多组分进料流(例如甲烷和氮气)的两种主要组分的方法,该方法在第三种可冷冻组分(例如二氧化碳)存在下,其相对挥发度小于任一种 零件。 本发明的方法既采用蒸馏段又控制冷冻区(“CFZ”)。 允许可冷冻组分在CFZ中冷冻,并将所得固体收集在CFZ的底部。 CFZ还产生富含一种主要组分的蒸气塔顶馏出物和富含另一种主要组分的液体底部产物。 将可冷冻组分的固体熔融并与CFZ液体底部产物混合以形成用于蒸馏部分的液体进料流,其运行类似于常规蒸馏部分,同时容许可冷冻的显着高浓度(即> 0.1摩尔%) 组分无固体形成,温度远低于可冷冻组分的凝固点。
    • 6. 发明授权
    • Process and apparatus for producing liquid carbon dioxide
    • 生产液态二氧化碳的方法和设备
    • US5233837A
    • 1993-08-10
    • US940281
    • 1992-09-03
    • Richard A. Callahan
    • Richard A. Callahan
    • F01K17/04B01D53/22C01B21/04C01B32/50F25J3/02F25J3/06
    • F25J3/067B01D53/229C01B21/045C01B31/20F25J3/066C01B2210/0051F25J2205/40F25J2205/80F25J2210/04F25J2210/42F25J2210/70F25J2215/04F25J2220/44F25J2220/82F25J2230/30F25J2240/12F25J2245/90F25J2270/14Y02C10/12Y02E20/14Y02P20/129Y02P20/13Y02P20/152Y10S62/93
    • A process for producing liquid carbon dioxide. A process stream which comprises carbon dioxide, balance substantially nitrogen and water, is cooled so that a minor amount of the water is condensed out. The process stream is compressed so that substantially all of the water but trace amounts is condensed out. Next, the process stream is cleaned to remove the trace amounts of water, any long-chain hydrocarbons present and any particulates present. The process stream is then separated into a nitrogen-rich gaseous stream and a carbon dioxide-rich gaseous stream. The carbon dioxide-rich gaseous stream is then compressed and the nitrogen-rich gaseous stream is expanded to produce an expanded nitrogen-rich gaseous stream. The energy of the expanding is used to compress the carbon dioxide-rich gaseous stream. The compressed carbon dioxide-rich gaseous stream is cooled to liquefy the carbon dioxide in the stream and reduce the temperature of the gaseous nitrogen in the stream. The liquefied carbon dioxide is withdrawn as product. The liquefying of the carbon dioxide-rich gaseous stream is by using the expanded nitrogen-rich gaseous stream. After the liquefying, the nitrogen-rich gaseous stream is used to perform at least part of the first cooling. In a preferred form, the process stream results from combusting a mixture of fuel and oxygen in a heat engine to drive an electrical generator with the product of the heat engine to produce electricity and also yielding the process stream. Apparatus for the production of liquid carbon dioxide which includes devices to perform each of the process steps.
    • 一种生产液态二氧化碳的方法。 包含二氧化碳,基本上平衡氮和水的工艺流被冷却,使得少量的水冷凝出来。 将工艺物流压缩,使得基本上所有的水,但痕量都被冷凝出来。 接下来,清洁工艺流以除去痕量的水,存在的任何长链烃和存在的任何颗粒。 然后将工艺流分离成富氮气流和富含二氧化碳的气流。 然后将富含二氧化碳的气流压缩,并使富氮气流膨胀以产生膨胀的富氮气流。 膨胀的能量用于压缩富含二氧化碳的气流。 将压缩的富含二氧化碳的气流冷却以使物流中的二氧化碳液化并降低气流中的气态氮的温度。 液化二氧化碳作为产品被取出。 富含二氧化碳的气流的液化是通过使用膨胀的富氮气流。 液化后,使用富氮气流进行至少部分第一次冷却。 在优选的形式中,工艺流是由于在发动机中燃烧燃料和氧气的混合物而产生的,以利用热机的产品来驱动发电机产生电力并产生工艺流。 用于生产液体二氧化碳的装置,其包括用于执行每个工艺步骤的装置。