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21. 发明授权

US4433558A Parallel contact distillative freezing process for separating volatile mixtures and apparatuses for use therein 失效
标题翻译：用于分离挥发性混合物的平行接触蒸馏冷冻方法和用于其中的装置
公开(公告)号：US4433558A
公开(公告)日：1984-02-28
申请号：US307507
申请日：1981-10-01
申请人： Chen-Yen Cheng , Sing-Wang Cheng
发明人： Chen-Yen Cheng , Sing-Wang Cheng
IPC分类号： B01D7/02 , B01D9/04
CPC分类号： B01D7/02 , B01D9/04
摘要： The parallel contact distillative freezing process is an improved distillative freezing process. The distillative freezing process is used in separating a mixture containing at least two volatile components, denoted respectively as A-component and B-component, by simultaneously vaporizing the two components from the mixture under a sufficiently reduced pressure to simultaneously crystalline B-component. The vapor mixture obtained is brought to a condensed state by lowering its temperature a few degrees without substantially pressurizing it. The process may be continued to completely eliminate the liquid phase and bring the mixture into the two phase solid-vapor region. Then, the solid phase is no longer contaminated by the adhering liquid phase and gives a high purity B-component on melting. The parallel contact distillative freezing process is conducted within an elongated processing zone, wherein feed is introduced at one end and the purified B-solid and the low pressure vapor are both discharged at the other end. The vapor, solid and liquid are all transferred in the same direction; the vapor is allowed to interact with the liquid constantly as the vaporization and solidification take place.
摘要翻译：平行接触蒸馏冷冻过程是一种改进的蒸馏冷冻过程。蒸馏冷冻方法用于分离含有至少两种挥发性组分的混合物，分别表示为A组分和B组分，通过在充分降低的压力下从混合物中同时蒸发两种组分同时结晶的B组分。所获得的蒸汽混合物通过将其温度降低几度而不会对其进行基本加压而进入冷凝状态。该过程可以继续完全消除液相并使混合物进入两相固体蒸汽区域。然后，固相不再被粘附液相污染，并在熔化时产生高纯度的B成分。平行接触蒸馏冷冻过程在细长的处理区域内进行，其中进料在一端被引入，并且纯化的B-固体和低压蒸汽都在另一端排出。蒸汽，固体和液体均以相同方向转移; 当蒸发和凝固发生时，允许蒸气与液体不断相互作用。

22. 发明授权

US4218893A Distillative freezing process for separating volatile mixtures and apparatuses for use therein 失效
标题翻译：用于分离挥发性混合物的蒸馏冷冻方法和用于其中的装置
公开(公告)号：US4218893A
公开(公告)日：1980-08-26
申请号：US930312
申请日：1978-08-02
申请人： Chen-yen Cheng , Sing-Wang Cheng
发明人： Chen-yen Cheng , Sing-Wang Cheng
IPC分类号： B01D9/04
CPC分类号： B01D9/04
摘要： The distillative freezing process disclosed is useful in separating a mixture containing at least two volatile components, denoted respectively as A-component and B-component, by simultaneously vaporizing the two components from the mixture under a sufficiently reduced pressure to simultaneously crystallize B-component. The vapor mixture obtained is brought to a condensed state either by a simple condensation operation or a condensation-desublimation operation without being substantially pressurized. The process may be conducted to completely eliminate the liquid phase and bring the mixture into the two phase solid-vapor region. Then, the solid phase in no longer contaminated by the adhering liquid phase and gives a high purity B-component on melting. The process is particularly useful in separating mixtures containing close boiling components, such as styrene-ethyl benzene mixtures, p-xylene-m-xylene mixtures and ethylene-ethane mixtures. The process can therefore be used in producing high purity monomers for the plastic industries and high purity chemicals for other industries.
摘要翻译：所公开的蒸馏冷冻方法可用于分离含有至少两种挥发性组分的混合物，分别表示为A组分和B组分，同时在充分降低的压力下从混合物中蒸发两种组分以同时结晶B组分。所获得的蒸气混合物通过简单的冷凝操作或冷凝 - 冷凝 - 操作而不会基本上被加压而进入冷凝状态。该过程可以进行以完全消除液相并使混合物进入两相固体蒸汽区域。然后，固相不再被粘附液相污染，并在熔化时得到高纯度的B成分。该方法特别可用于分离含有近沸点组分的混合物，例如苯乙烯 - 乙苯混合物，对二甲苯 - 间二甲苯混合物和乙烯 - 乙烷混合物。因此，该方法可用于生产用于塑料工业的高纯度单体和用于其它工业的高纯度化学品。

23. 发明授权

US3667243A Indirect-freezing process with heat reuse by an auxiliary working medium 失效
标题翻译：通过辅助工作介质进行热再循环的间接冷冻过程
公开(公告)号：US3667243A
公开(公告)日：1972-06-06
申请号：US3667243D
申请日：1968-07-10
申请人： CHENG CHEN YEN , SING WANG CHENG
发明人： CHENG CHEN-YEN , CHENG SING-WANG
IPC分类号： B01D9/04 , C02F1/22
CPC分类号： C02F1/22 , B01D9/04 , C02F2103/08 , Y02A20/132
摘要： The present invention is related to a separation process by which a substance can be separated in a more or less purified state from a solution containing it. In the process, the solution is partially solidified by an indirect contact cooling operation and the deposited solid is then melted in situ to yield the purified substance. High quality deposit is obtained by maintaining an appropriate flow of the solution over the surface of the deposited solid during the solidification operation and by growing the deposit at a low growth rate. Heat reuse in these operations is accomplished by the help of an auxiliary working medium which undergoes a cyclic change. The medium undergoes an endothermic transformation, such as melting, vaporization, etc., to absorb the heat liberated during the partial solidification operation and undergoes the corresponding reverse operation, which is exothermic, to supply the heat required in melting the deposited solid. Since the transformation temperatures of both the main system and the auxiliary system during the operations described above are functions of the respective applied pressures, the temperature differentials required in these heat exchange operations between the main and the auxiliary systems can be obtained by selecting a suitable working medium and by maintaining the pressure applied to these systems during the operations or appropriate values. Work is supplied to the process through the necessary pressurization operations. The working medium used may undergo a set of solid liquid transformations, a set of liquid vapor transformations, or any other reversible transformations. When a rigid wall is used to separate the medium from the main system, the pressures applied to them may be different at a given time. However, when a deformable vessel is used to separate the two systems. both systems are maintained substantially at the same pressure at any given time. The processes of the present invention are classified according to the nature of transformations of the working medium and the nature of the wall separating the two systems. The equipments which can be used in these processes are also described.
摘要翻译：本发明涉及一种分离方法，通过该方法，物质可以或多或少地从含有它的溶液中分离出来。在该过程中，通过间接接触冷却操作将溶液部分固化，然后将沉积的固体原位熔化，得到纯化物质。通过在固化操作期间保持溶液在沉积的固体的表面上的适当流动并且以低生长速率生长沉积物来获得高质量的沉积物。这些操作中的热再利用是通过经历周期性变化的辅助工作介质来实现的。介质经历吸热转化，例如熔化，汽化等，以吸收部分凝固操作期间释放的热量，并进行相应的反应，这是放热的，以提供熔化沉积的固体所需的热量。由于在上述操作期间主系统和辅助系统的转换温度是相应施加压力的函数，所以主系统和辅助系统之间的这些热交换操作所需的温差可以通过选择合适的工作并且通过维持在操作期间施加到这些系统的压力或适当的值。通过必要的加压操作将工作提供给过程。

24. 发明授权

US4809519A Methods and apparatuses for conducting solid-liquid-vapor multiple phase transformation operations 失效
标题翻译：用于进行固 - 液 - 蒸汽多相变换操作的方法和装置
公开(公告)号：US4809519A
公开(公告)日：1989-03-07
申请号：US177668
申请日：1988-04-18
申请人： Chen-Yen Cheng , Sing-Wang Cheng , Wu-Cheh Cheng
发明人： Chen-Yen Cheng , Sing-Wang Cheng , Wu-Cheh Cheng
IPC分类号： B01D9/00 , B01D9/04 , C02F1/22
CPC分类号： B01D9/04 , B01D9/0022
摘要： The invention is a method with equipments for conducting the solid-liquid-vapor multiple phase transformation steps of processes such as vacuum freezing, wet distillative freezing, vacuum crystallization and primary refrigerant eutectic freezing. All these processes require simultaneous vaporization and crystallization. The invented method for conducting this common step consists of (1) distributing the solution over a rotating surface area to form liquid films (2) subjecting the liquid films to simultaneous vaporization and crystallization (3) removing the crystals from the surfaces and (4) transporting the crystals to the next processing zone. The surfaces can be rotating screws with intermeshing flights or a sets of disks on rotating shafts. The screws are partially submerged in the solution. Elements of the screws are wetted when they are rotated into the pool. Vaporization and crystallization occur when the screw elements are rotated out of the pool because the vessel is maintained at a pressure below the multiple phase--that is solid-liquid-vapor--equilibrium pressure of the solution. The crystals either dislodge from the elements when the elements re-enter the pool or they build up to a certain thickness and are then rubbed off by the crystal buildup on the intermeshing screw. Whether the crystals float or sink, they are conveyed by the screws to the next processing zone. Disk arrangements can be used just like the screws. However, a separate conveying screw is needed to transport the crystals.
摘要翻译：本发明是一种用于进行真空冷冻，湿蒸馏冷冻，真空结晶和一次制冷剂共晶冷冻等工序的固液相蒸发多相转化工序的设备的方法。所有这些方法都需要同时蒸发和结晶。本发明方法为（1）将溶液分布在旋转表面区域上形成液膜（2）使液膜同时蒸发和结晶（3）从表面除去晶体;（4）将晶体运送到下一个处理区。表面可以是旋转的螺钉，其具有相互啮合的飞行或旋转轴上的一组盘。螺丝部分浸没在溶液中。当螺丝旋转到池中时，螺丝的元件会润湿。当螺旋元件旋转离开池时，发生蒸发和结晶，因为容器保持在低于溶液的固 - 液 - 蒸气 - 平衡压力的多相的压力。当元素重新进入池中或者它们积聚到一定厚度时，晶体或者从元素中移出，然后通过相互啮合的螺钉上的晶体积累而被擦掉。无论晶体是浮动还是下沉，它们都被螺丝传送到下一个处理区。磁盘布置可以像螺丝一样使用。然而，需要单独的输送螺杆来运输晶体。

25. 发明授权

US4505728A Vacuum freezing multiple phase transformation process and apparatus for use therein 失效
标题翻译：真空冷冻多相转化工艺及其使用的装置
公开(公告)号：US4505728A
公开(公告)日：1985-03-19
申请号：US526261
申请日：1983-08-25
申请人： Chen-Yen Cheng , Sing-Wang Cheng
发明人： Chen-Yen Cheng , Sing-Wang Cheng
IPC分类号： B01D7/02 , B01D9/04 , C02F1/22
CPC分类号： B01D7/02 , B01D9/04 , C02F1/22 , C02F2103/08
摘要： Improved apparatuses and methods of operation for conducting the separation process entitled "Vacuum Freezing Multiple Phase Transformation Process (denoted as VFMPT Process)" have been introduced. Processing zones and valving means are properly arranged so that operations in most processing zones are continuous. An improved VFMPT plant can be operated simply and reliably and be constructed at a low cost. Corrosion problems, use of a low pressure compressor, use of an absorbing solution have been eliminated.A feed containing a volatile solvent and one or more non-volatile solutes is separated to produce a purified solvent product and a concentrate by the following steps: (a) a feed is flash vaporized in a vacuum freezing zone to form a first vapor and a first condensed mass containing solvent crystals and mother liquor, the pressure of the first vapor being lower than the triple point pressure of the solvent; (b) the first condensed mass is separated into a mass of purified solvent crystals and a concentrate in a crystal washing unit; (c) the first vapor is brought to a liquid state in a vapor liquefaction zone comprising several sub-zones by a two stage transformation involving vapor desublimation and desublimate melting operations; (d) a solvent stream is continuously vaporized in a thin film evaporator within a vapor generation zone to produce a continuous stream of second vapor whose pressure is somewhat higher than the triple point pressure of the solvent, (e) the solvent vapor is brought in contact with the purified solvent crystals to thereby melt the crystals and condense the vapor. The desublimate melting operation may also be accomplished by bringing a part of the second vapor in contact with the desublimate. A unique set of valving means are used to control flows of first and second vapors to the vapor liquefaction sub-zones.
摘要翻译：已经介绍了用于进行题为“真空冷冻多相变换过程（表示为VFMPT工艺）”的分离过程的改进的装置和操作方法。加工区域和阀门装置被适当地布置，使得大多数处理区域中的操作是连续的。改进的VFMPT工厂可以简单可靠地运行，并以低成本构建。已经消除了腐蚀问题，使用低压压缩机，使用吸收溶液。分离含有挥发性溶剂和一种或多种非挥发性溶质的原料以通过以下步骤产生纯化的溶剂产物和浓缩物：（a）将进料在真空冷冻区中闪蒸，形成第一蒸气和含有溶剂晶体和母液的第一缩合物质，第一蒸气的压力低于溶剂的三重点压力; （b）将第一冷凝物质分离成大量纯化溶剂晶体，并将浓缩物分离成晶体洗涤单元; （c）通过涉及气相沉积和稀释熔化操作的两阶段转化，使第一蒸汽在包含若干子区的蒸汽液化区中达到液态; （d）溶剂流在蒸汽产生区内的薄膜蒸发器中连续蒸发，以产生压力略高于溶剂的三重点压力的第二蒸气的连续流，（e）使溶剂蒸气进入与纯化的溶剂晶体接触，从而熔化晶体并冷凝蒸气。稀释的熔化操作也可以通过使一部分第二蒸气与稀释物接触来实现。使用独特的阀门装置来控制第一和第二蒸气到蒸气液化子区域的流动。

26. 发明授权

US4451273A Distillative freezing process for separating volatile mixtures and apparatuses for use therein 失效
标题翻译：用于分离挥发性混合物的蒸馏冷冻方法和用于其中的装置
公开(公告)号：US4451273A
公开(公告)日：1984-05-29
申请号：US480932
申请日：1983-03-31
申请人： Chen-Yen Cheng , Sing-Wang Cheng
发明人： Chen-Yen Cheng , Sing-Wang Cheng
IPC分类号： B01D7/02 , B01D9/04 , F25J3/00
CPC分类号： B01D7/02 , B01D9/04
摘要： The distillative freezing process disclosed is useful in separating and purifying a mixture that contains a volatile and crystallizing component and one or more volatile and non-crystallizing components by vaporizing the volatile components from the mixture under a sufficiently reduced pressure to thereby simultaneously form a mass of solid enriched with the crystallizing component. Two components of a mixture processed are denoted as the key components: one is the crystallizing component and is denoted as B-component; the other is the non-crystallizing component present in the greatest amount and is denoted as A-component. For a mixture to be processable by the process, it is necessary that the vapor pressure ratio of the key components be within a certain range and a low pressure phase diagram of the binary system of the key components belongs to certain types of phase diagrams.
摘要翻译：所公开的蒸馏冷冻方法可用于分离和纯化含有挥发性和结晶组分和一种或多种挥发性和非结晶性组分的混合物，通过在充分降低的压力下汽化来自混合物的挥发性组分，从而同时形成富含结晶组分的固体。将处理的混合物的两种成分表示为关键组分：一种是结晶组分，并表示为B-组分; 另一种是存在最大量的非结晶组分，并表示为A成分。对于通过该过程可加工的混合物，关键部件的蒸气压比必须在一定范围内，关键部件的二进制系统的低压相图必须属于某些类型的相图。

27. 发明授权

US3678696A Fractional solidification process with heat reuse by the application of pressure 失效
标题翻译：通过压力应用具有热再利用的部分固化工艺
公开(公告)号：US3678696A
公开(公告)日：1972-07-25
申请号：US3678696D
申请日：1968-03-11
申请人： CHENG CHEN YEN , SING WANG CHENG
发明人： CHENG CHEN YEN , CHENG SING-WANG
IPC分类号： B01D9/02 , B01D9/00
CPC分类号： B01D9/0013 , B01D9/004
摘要： A fractional solidification process for separating relatively pure water from an aqueous solution, separating a solution into its components and purifying an impure substance by the so-called progressive freezing operation in which a feed solution is circulated through a conduit and is cooled through the conducting surface of the conduit. The improvement comprises of the followings: 1. Heat reuse is achieved by taking advantage of the change of melting point of a substance due to the application of pressure. 2. A unified freezer-melter which contains two sets of conduits, A-conduits and B-conduits, is used. A-conduits and B-conduits are in heat exchange relation through a metallic conductor and each set of these conduits are used alternately as a freezer and a melter. For separation of water, a high pressure is applied during the melting operation, and for the separation of other substances, a high pressure is applied during the freezing operation to create the temperature difference for heat transfer which is required in the heat reuse.
摘要翻译：用于从水溶液中分离相对纯水的分级固化方法，将溶液分离成其组分并通过所谓的逐步冷冻操作纯化不纯物质，其中进料溶液通过导管循环并通过导电表面冷却的导管。改进包括：

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