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1.发明授权Multicomponent fluid feed apparatus with preheater and mixer for a high temperature chemical reactor 失效具有高温化学反应器预热器和混合器的多组分流体输送装置
公开(公告)号：US5935528A
公开(公告)日：1999-08-10
申请号：US783512
申请日：1997-01-14
CPC分类号： B01J12/02 , B01J19/26 , B01J8/1827 , C01G43/01 , C01G43/025 , B01J2219/00099 , B01J2219/00119 , B01J2219/00135 , B01J2219/00159
摘要： A multicomponent fluid feed apparatus is disclosed that independently preheats and then mixes two or more fluid streams being introduced into a high temperature chemical reactor to promote more rigorous and complete reactions using assemblies of inert tubular elements and an integral mixing orifice plate. The design allows use of ceramic and speciality alloy materials for high temperature service with particularly corrosive halide feeds such as UF.sub.6 and HF. Radiant heat transfer to the tubular elements from external means gives the necessary system high temperatures without excessive temperatures to cause material failure. Preheating of the gaseous reactants in a separate step prior to mixing and injecting the gaseous reactants into a high temperature chemical reactor was found to provide an improved thermal conversion of UF.sub.6 to uranium oxides.
摘要翻译： 公开了一种多组分流体输送装置，其独立地预热然后将引入到高温化学反应器中的两种或更多种流体流混合，以使用惰性管状元件和整体混合孔板的组件来促进更严格和完整的反应。 该设计允许使用陶瓷和特种合金材料进行高温维护，特别是腐蚀性卤化物进料如UF6和HF。 从外部装置向管状元件的辐射热传递给出必要的系统高温，而没有过多的温度导致材料失效。 发现在气态反应物混合并将气态反应物注入高温化学反应器之前，在单独的步骤中预热气态反应物以提供UF 6与氧化铀的改进的热转化。
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公开(公告)号：US4546611A
公开(公告)日：1985-10-15
申请号：US564113
申请日：1983-12-21
CPC分类号： B01D7/02
摘要： The invention is a UF.sub.6 -recovery process of the kind in which a stream of substantially pure gaseous UF.sub.6 is directed through an externally chilled desublimer to convert the UF.sub.6 directly to an annular solid ring adhering to the interior wall of the desublimer. After accumulation of a desired amount of solid UF.sub.6, the desublimer is heated to liquefy the solid. Subsequently, the liquid is recovered from the desublimer. It has been found that during the heating operation the desublimer is subjected to excessive mechanical stresses. In addition, it has been found that the incorporation of a very small percentage of relatively noncondensable, nonreactive gas (e.g., nitrogen) in the UF.sub.6 input to the desublimer effects significant decreases in the stresses generated during the subsequent melting operation. This modification to the process provides valuable advantages in terms of reduced hazard, lower operating costs for the desublimer, and increased service life for the desublimer and its auxiliaries. The new process is especially suitable for the recovery of enriched UF.sub.6 from high-speed UF.sub.6 gas-centrifuge cascades.
摘要翻译： 本发明是一种UF6回收方法，其中基本上纯的气态UF6流被引导通过外部冷却的均质器，以将UF6直接转换成附着在均质器内壁的环形固体环。 在堆积所需量的固体UF6之后，将均质化合物加热以使固体液化。 随后，从均质器中回收液体。 已经发现，在加热操作期间，均质器受到过大的机械应力。 此外，已经发现，将非常少百分比的相对不可缩短的非反应性气体（例如氮）引入到均质合子的UF6输入中，在随后的熔融操作期间产生的应力的作用显着降低。 对该方法的这种修改在减少危害，降低发行人的运营成本以及延长其分配器及其辅助设备的使用寿命方面提供了宝贵的优势。 新工艺特别适用于从高速UF6气体离心机级联回收富集的UF6。
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3.发明授权Method for improving dissolution efficiency in gas-absorption and liquid extraction processes 失效提高气体吸收和液体萃取过程溶解效率的方法
公开(公告)号：US4305735A
公开(公告)日：1981-12-15
申请号：US111495
申请日：1980-01-11
CPC分类号： B01D53/1412 , B01D53/14 , C01B21/0488 , C01B2210/0084
摘要： This invention is a method for improving dissolution efficiency in processes in which a feed fluid is introduced to a zone where it is contacted with a liquid solvent for preferentially removing a component of the feed and where part of the solvent so contacted undergoes transfer into the feed fluid to saturate the same. It has been found that such transfer significantly impairs dissolution efficiency. In accordance with the invention, an amount of the above-mentioned solvent is added to the feed fluid being introduced to the contact zone, the solvent being added in an amount sufficient to effect reduction or elimination of the above-mentioned transfer. Preferably, the solvent is added to the feed fluid in an amount saturating or supersaturating the feed fluid under the conditions prevailing in the contact zone.
摘要翻译： 本发明是一种提高溶解效率的方法，其中将进料流体引入到与液体溶剂接触的区域中以优先除去进料成分的区域中，并且其中一部分如此接触的溶剂转移到进料中 流体饱和一样。 已经发现这种转移显着地损害溶解效率。 根据本发明，将一定量的上述溶剂加入到引入到接触区的进料流体中，加入的溶剂的量足以减少或消除上述转移。 优选地，在进料流体中以在接触区域中主要的条件下使进料流体饱和或过饱和的量加入溶剂。
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4.发明授权
公开(公告)号：US5875385A
公开(公告)日：1999-02-23
申请号：US783264
申请日：1997-01-15
IPC分类号： C01G43/01 , C01G43/025
CPC分类号： C01G43/01 , C01G43/025 , Y02P20/129
摘要： The present invention provides a method for varying and controlling the chemical composition and physical properties of the uranium oxide solids produced by the thermal conversion of UF.sub.6. The method allows the production of predominantly UO.sub.2, U.sub.3 O.sub.8, or UO.sub.3 interchangeably from the same reactor simply by controlling the hydrogen and oxygen contents of the feed relative to uranium. The temperature profile of the thermal reactor is established by specifying the preheat of the feed prior to mixing, the feed composition, and the reactor wall temperature to thus vary and control the physical properties of the resulting solids according to the end use of the uranium product.
摘要翻译： 本发明提供了一种用于改变和控制由UF6的热转化产生的氧化铀固体的化学组成和物理性质的方法。 该方法允许主要通过相对于铀控制进料的氢和氧含量从相同的反应器互换地生产UO2，U3O8或UO3。 热反应器的温度曲线是通过在混合之前指定进料的预热，进料组成和反应器壁温度来确定的，从而根据铀产物的最终用途改变和控制所得固体的物理性能 。
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公开(公告)号：US5752158A
公开(公告)日：1998-05-12
申请号：US657937
申请日：1996-05-30
IPC分类号： C01B7/19 , C01G43/025 , C01G43/01
CPC分类号： C01G43/025 , C01B7/191 , C01P2006/80
摘要： A single-step process for producing solid uranium oxide and gaseous HF from UF.sub.6 which comprises bringing together two gaseous reactant streams, one of said streams comprising UF.sub.6 optionally admixed with oxygen as O.sub.2, and the second reactant stream comprising a mixture of hydrogen as H.sub.2 or as a hydrogen-containing compound and oxygen as an oxygen-containing compound, said gaseous reactant streams being brought together at a temperature and composition such that the UF.sub.6 is converted rapidly by flame reaction into readily separable solid uranium oxide and a gaseous HF product.
摘要翻译： 用于从UF6生产固体氧化铀和气态HF的单步方法，其包括将两种气态反应物流，包含UF 6的所述物流之一任选与氧气作为O 2混合，以及包含氢气作为H 2的混合物的第二反应物流 作为含氢化合物和作为含氧化合物的氧气，所述气态反应物流在温度和组成使得UF 6通过火焰反应迅速转化成容易分离的固体氧化铀和气态HF产物的情况下聚在一起。
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公开(公告)号：US4129425A
公开(公告)日：1978-12-12
申请号：US816575
申请日：1977-07-18
CPC分类号： B01D53/1418 , B01D3/322 , B01D53/14 , B01D53/1406
摘要： This invention is an improved gas-absorption process for the recovery of a desired component from a feed-gas mixture containing the same. In the preferred form of the invention, the process operations are conducted in a closed-loop system including a gas-liquid contacting column having upper, intermediate, and lower contacting zones. A liquid absorbent for the desired component is circulated through the loop, being passed downwardly through the column, regenerated, withdrawn from a reboiler, and then recycled to the column.A novel technique is employed to concentrate the desired component in a narrow section of the intermediate zone. This technique comprises maintaining the temperature of the liquid-phase input to the intermediate zone at a sufficiently lower value than that of the gas-phase input to the zone to effect condensation of a major part of the absorbent-vapor upflow to the section. This establishes a steep temperature gradient in the section. The stripping factors below this section are selected to ensure that virtually all of the gases in the downflowing absorbent from the section are desorbed. The stripping factors above the section are selected to ensure re-dissolution of the desired component but not the less-soluble diluent gases. As a result, a peak concentration of the desired component is established in the section, and gas rich in that component can be withdrawn therefrom.The new process provides important advantages. The chief advantage is that the process operations can be conducted in a single column in which the contacting zones operate at essentially the same pressure.
摘要翻译： 本发明是一种改进的气体吸收方法，用于从含有该组分的原料 - 气体混合物回收所需组分。 在本发明的优选形式中，工艺操作在包括具有上，中，下接触区的气 - 液接触塔的闭环系统中进行。 用于所需组分的液体吸收剂循环通过循环，向下通过柱，再生，从再沸器中取出，然后再循环至塔中。
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公开(公告)号：US5717149A
公开(公告)日：1998-02-10
申请号：US460887
申请日：1995-06-05
IPC分类号： C01B7/03 , C01B7/19 , C01B9/02 , C01G43/01 , C22B5/02 , C22B9/02 , C22B60/02 , G21F9/32 , C22B60/00
CPC分类号： G21F9/32
摘要： A method and apparatus producing halogenated products from metal halide feeds. In one embodiment, uranium hexafluoride is treated by separating fluorine from the metal of the uranium hexafluoride. Uranium hexafluoride is introduced into a molten metal bath under conditions whereby the uranium hexafluoride in the presence of hydrogen and oxygen can react to form a uranium dioxide and anhydrous hydrogen fluoride. The anhydrous hydrogen fluoride is removed from the molten metal bath as a gas stream and the uranium dioxide is discharged as a ceramic phase.
摘要翻译： 从金属卤化物进料产生卤化物的方法和装置。 在一个实施方案中，通过从六氟化铀的金属中分离氟来处理六氟化铀。 将六氟化铀引入熔融金属浴中，由此在氢和氧气存在下六氟化铀可以反应形成二氧化铀和无水氟化氢。 无水氟化氢作为气流从熔融金属浴中除去，二氧化铀以陶瓷相排出。
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公开(公告)号：US6162481A
公开(公告)日：2000-12-19
申请号：US524763
申请日：1995-09-08
申请人： Donald B. Bernacchi , Kenneth S. Darley , Irene Greener Donhowe , Kwang L. Rho , Joachim N. C. Baur , John J. Prisciak , Sergio L. Odorico , Michael J. Stephenson
发明人： Donald B. Bernacchi , Kenneth S. Darley , Irene Greener Donhowe , Kwang L. Rho , Joachim N. C. Baur , John J. Prisciak , Sergio L. Odorico , Michael J. Stephenson
IPC分类号： A21D2/26 , A21D13/00 , A21D13/06 , A23J3/10 , A23J3/16 , A23L1/00 , A23L1/176 , A23L1/315 , A23L1/325 , A23P1/08
CPC分类号： A23L17/75 , A21D2/26 , A21D13/064 , A21D13/20 , A21D13/46 , A23J3/10 , A23J3/16 , A23L7/157 , A23L13/57 , A23P20/12
摘要： Novel breading crumbs are provided in which a heat-set protein is incorporated into the breading crumbs which may then optionally be coated, and which will provide improved textural qualities to food products to which they are applied with improved retention of such qualities under conditions which normally lead to deterioration of organoleptic properties, including maintaining the cooked food product at an edible temperature for a period of time and maintaining the food product under refrigeration, freezing and freeze-thaw conditions. The breading crumbs preferably are Oriental-style breading crumbs and the heat-set protein preferably is sodium caseinate. The novel breading crumbs may be comminuted and used as a predust, as a batter component, or as a flour breader. Further improvements in organoleptic properties can be obtained using a combination of the comminuted material and the novel breading crumbs in food coating systems.
摘要翻译： 提供了新颖的面粉屑，其中将热定形蛋白质掺入到面粉屑中，然后可以任选地涂覆，并且这将为其应用的食品提供改善的质地质量，在通常的条件下具有改善的这种质量的保留 导致感官特性恶化，包括将熟食品在可食用温度下保持一段时间，并将食品保持在制冷，冷冻和冻融条件下。 面粉屑最好是东方风味面包屑，而热定型蛋白质最好是酪蛋白酸钠。 新颖的面包粉屑可以粉碎并用作预制粉末，作为面糊组分，或作为面粉机。 可以使用食品涂料体系中的粉碎材料和新型面包屑的组合来获得感官特性的进一步改善。
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9.发明授权
公开(公告)号：US5735932A
公开(公告)日：1998-04-07
申请号：US683895
申请日：1996-07-19
CPC分类号： C22B60/0213 , C22B60/0286
摘要： A process for preparing uranium metal or alloy thereof suitable for use in a metal-based uranium enrichment plant or other use requiring a superdense metal comprising providing a molten metal bath containing the alloy metal and feeding uranium oxide and a reactive metal reductant into the molten metal bath so that the oxide is reduced to elemental uranium and alloying the thus formed uranium with the bath metal.
摘要翻译： 一种制备适用于金属铀浓缩装置的铀金属或其合金的方法或其它需要超强度金属的用途，包括提供含有合金金属和将氧化铀和反应性金属还原剂的熔融金属浴浸入熔融金属中 使得氧化物还原成元素铀，并将由此形成的铀与浴金属合金化。
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