公开(公告)号：US5472928A

公开(公告)日：1995-12-05

申请号：US235777

申请日：1994-04-29

申请人： Georgieanna L. Scheuerman ,  David R. Johnson ,  David C. Kramer

发明人： Georgieanna L. Scheuerman ,  David R. Johnson ,  David C. Kramer

IPC分类号： B01J8/00 ,  B01J8/12 ,  B01J8/18 ,  B01J8/22 ,  C10G49/00 ,  C10G49/14 ,  B01J23/58

CPC分类号： B01J8/003 ,  B01J8/008 ,  B01J8/125 ,  B01J8/1881 ,  B01J8/22 ,  C10G49/002 ,  C10G49/14 ,  B01J2208/00884

摘要： This invention makes possible substantially continuous flow of uniformly distributed hydrogen and hydrocarbon liquid across a densely packed catalyst bed to fill substantially the entire volume of a reactor vessel by introducing the fluids as alternate annular rings of gas and liquid at a rate insufficient to levitate the catalyst bed. Catalyst are selected by density, shape and size at a design feed rate of liquids and gas to prevent ebullation of the packed bed at the design feed rates. Catalysts are selected by measuring bed expansion with hydrocarbon, hydrogen, and catalyst at the design pressures and flow velocities. The liquid and gas components of the feed flow into the bed in alternate annular rings across the full area of the bed. At the desired flow rate, such catalyst continually flows in a plug-like manner downwardly through the reactor vessel by introducing fresh catalyst at the top of the catalyst bed by laminarly flowing such catalyst in a liquid stream on a periodic or semicontinuous basis. Catalyst is removed by laminarly flowing catalyst particles in a liquid stream out of the bottom of the catalyst bed. Intake for such flow is out of direct contact with the stream of gas flowing through the bed and the flow path is substantially constant in cross-sectional area and greater in diameter by several times than the diameter of the catalyst particles. The catalyst produces a plug-flowing substantially packed bed of hydroprocessing catalyst which occupies at least about 75% by volume of the reactor volume.

摘要翻译： 本发明使得均匀分布的氢气和烃液体可以在密集填充的催化剂床上基本连续地流动，以通过以不足以悬浮催化剂的速率引入流体作为气体和液体的替代环​​形环来填充基本上整个体积的反应器容器 床。 在液体和气体的设计进料速率下，通过密度，形状和尺寸选择催化剂，以防止填料床以设计进料速率进行沸腾。 通过在设计压力和流速下用烃，氢和催化剂测量床膨胀来选择催化剂。 进料床的液体和气体组分在床的整个区域内以交替的环形环流入床中。 以期望的流速，这种催化剂以塞子状方式向下延伸穿过反应器容器，通过在催化剂床的顶部引入新鲜的催化剂，通过在液体流中以周期性或半连续的方式层流流动这种催化剂。 催化剂通过层流流动的催化剂颗粒在催化剂床底部的液体流中除去。 这种流动的吸入不与流过床的气体流直接接触，并且流动通道在横截面积上基本上恒定，并且直径大于催化剂颗粒直径的几倍。 该催化剂产生一个堵塞流动基本上是加氢处理催化剂的填充床，其占反应器体积的至少约75体积％。

公开(公告)号：US5089463A

公开(公告)日：1992-02-18

申请号：US595524

申请日：1990-10-11

申请人： David R. Johnson

发明人： David R. Johnson

IPC分类号： B01J23/85 ,  B01J35/10 ,  C10G45/04

CPC分类号： C10G45/04 ,  B01J23/85 ,  B01J35/1019 ,  B01J35/1042 ,  B01J35/1061 ,  B01J35/108

摘要： For a heavy hydrocarbonaceous feed, especially good hydrodemetalation and hydrodesulfurization are achieved, as well as MCR reduction, using a catalyst having 5 to 11 percent of its pore volume in the form of macropores, and a surface area greater than 75 m.sup.2 /g. Preferably the catalyst has a peak mesopore diameter greater than 165 .ANG., as determined by mercury porosimetry, and an average mesopore diameter greater than 160 .ANG..

摘要翻译： 对于重质含烃原料，使用具有大孔形式的孔体积的5至11％的催化剂和大于75m 2 / g的表面积，实现了特别好的加氢脱矿和加氢脱硫以及MCR还原。 优选地，催化剂具有通过水银孔率法测定的大于165的峰中孔直径，并且平均中孔直径大于160安培。

公开(公告)号：US4983640A

公开(公告)日：1991-01-08

申请号：US283332

申请日：1988-12-12

申请人： Norman G. Moll ,  David R. Johnson

发明人： Norman G. Moll ,  David R. Johnson

IPC分类号： B21D21/00 ,  B22C7/02 ,  B22C9/04 ,  C08J20060101 ,  C08J9/14 ,  C08J9/18 ,  C08J9/20

CPC分类号： C08J9/18 ,  B22C7/023 ,  C08J9/14 ,  C08J2333/04

摘要： Expandable and expanded plastic materials having a majority of alkyl acrylate monomeric repeat units are disclosed. These materials when expanded have a volume expansion of at least 60 and maintain that volume expansion for a period of at least 30 minutes under expansion conditions after reaching the volume expansion of 60. Expandable and expanded plastic materials having a majority of alkyl acrylate monomeric repeat units and an inhibitor for the monomer(s) and a crosslinker incorporated into the plastic material upon monomer polymerization are also disclosed. Also disclosed are expandable and expanded plastic materials having majority of alkyl acrylate monomeric repeat units with blowing agents of 2,2-dimethylbutane, 2,3-dimethylbutane or mixtures of one or both with 1-chloro-1,1-difluoroethane or mixtures of at least 30 percent of one or both with other volatile blowing agents.These specific types of formed patterns and core assemblies, wholly or partially formed from the destructible expanded closed-cell cellular plastic materials of the present invention have a decreased tendency to form nonvolatile residue during the casting of metals such as iron. Superior castings are thereby obtained without resort to unecnomic casting methods.Further disclosed is a method of casting metal castings using the disclosed expanded plastic material articles (Lost Foam or Evaporative Pattern Casting). The disclosed expanded plastic material articles are especially preferred for metal castings having a final carbon percentage of 1.8 weight percent or less in the final casting.

摘要翻译： 公开了具有大多数丙烯酸烷基酯单体重复单元的可膨胀和膨胀的塑料材料。 当膨胀时，这些材料的体积膨胀至少为60，并且在达到体积膨胀60后在膨胀条件下保持该体积膨胀至少30分钟的时间。具有大部分丙烯酸烷基酯单体重复单元的膨胀和膨胀塑料材料 并且还公开了用于单体的抑制剂和在单体聚合时掺入塑料材料中的交联剂。 还公开了具有大多数丙烯酸烷基酯单体重复单元的可膨胀和膨胀塑料材料，其具有2,2-二甲基丁烷，2,3-二甲基丁烷或其中一种或两者与1-氯-1,1-二氟乙烷的混合物或 一种或两种与其它挥发性发泡剂中的至少30％。 由本发明的可破坏的膨胀闭孔多孔塑料材料全部或部分形成的这些特定类型的成型图案和芯组件在金属如铁中形成非挥发性残余物的倾向降低。 因此获得了优异的铸件，而无需采用非常规的铸造方法。 进一步公开的是使用所公开的膨胀塑料材料制品（失物泡沫或蒸发模式铸造）铸造金属铸件的方法。 所公开的膨胀塑料制品对于最终铸造中最终碳百分比为1.8重量％或更少的金属铸件是特别优选的。

公开(公告)号：US4831778A

公开(公告)日：1989-05-23

申请号：US95612

申请日：1987-09-11

申请人： Dietrich F. Schmidt ,  David R. Johnson ,  J. Carson Jackson

发明人： Dietrich F. Schmidt ,  David R. Johnson ,  J. Carson Jackson

IPC分类号： E06B3/44

CPC分类号： E06B3/44 ,  E06B2003/4453 ,  E06B3/4407

摘要： An upper sash of a frame window or door assembly which is provided with projections extending below the lower rail of the upper sash, wherein the projections engage and cooperate with a notch found on the flange of the jamb of the frame assembly in a manner so as to support and restrict movement of the upper sash.

摘要翻译： 框架窗或门组件的上部窗框，其设置有在上框架的下轨道下方延伸的突起，其中突起与框架组件的侧柱的凸缘上的凹口接合并配合， 支持和限制上腰带的运动。

公开(公告)号：US4790367A

公开(公告)日：1988-12-13

申请号：US149288

申请日：1988-01-28

申请人： Norman G. Moll ,  David R. Johnson

发明人： Norman G. Moll ,  David R. Johnson

IPC分类号： B22C7/02 ,  B22C9/04 ,  B22C9/02

CPC分类号： B22C9/046 ,  B22C7/023

摘要： Expandable and expanded plastic materials having a majority of alkyl acrylate monomeric repeat units are disclosed. These materials when expanded have a volume expansion of at least 60 and maintain that volume expansion for a period of at least 30 minutes under expansion conditions after reaching the volume expansion of 60. Expandable and expanded plastic materials having a majority of alkyl acrylate monomeric repeat units and an inhibitor for the monomer(s) and a crosslinker incorporated into the plastic material upon monomer polymerization are also disclosed. Also disclosed are expandable and expanded plastic materials having a majority of alkyl acrylate monomeric repeat units with blowing agents of 2,2-dimethylbutane, 2,3-dimethylbutane or mixtures of one or both with 1-chloro-1,1-difluoroethane or mixtures of at least 30 percent of one or both with other volatile blowing agents.These specific types of formed patterns and core assemblies, wholly or partially formed from the destructible expanded closed-cell cellular plastic materials of the present invention have a decreased tendency to form nonvolatile residue during the casting of metals such as iron. Superior castings are thereby obtained without resort to uneconomic casting methods.Further disclosed is a method of casting metal castings using the disclosed expanded plastic material articles (Lost Foam or Evaporative Pattern Casting). The disclosed expanded plastic material articles are especially preferred for metal castings having a final carbon percentage of 1.8 weight percent or less in the final casting.

摘要翻译： 公开了具有大多数丙烯酸烷基酯单体重复单元的可膨胀和膨胀的塑料材料。 当膨胀时，这些材料的体积膨胀至少为60，并且在达到体积膨胀60后在膨胀条件下保持该体积膨胀至少30分钟的时间。具有大部分丙烯酸烷基酯单体重复单元的膨胀和膨胀塑料材料 并且还公开了用于单体的抑制剂和在单体聚合时掺入塑料材料中的交联剂。 还公开了具有大部分丙烯酸烷基酯单体重复单元的可膨胀和膨胀塑料材料，其具有2,2-二甲基丁烷，2,3-二甲基丁烷或其中一种或两者与1-氯-1,1-二氟乙烷或其混合物的混合物 至少30％的一种或两种与其它挥发性发泡剂。 由本发明的可破坏的膨胀闭孔多孔塑料材料全部或部分形成的这些特定类型的成型图案和芯组件在金属如铁中形成非挥发性残余物的倾向降低。 从而获得了优异的铸件，而不采用不经济的铸造方法。 进一步公开的是使用所公开的膨胀塑料材料制品（失物泡沫或蒸发模式铸造）铸造金属铸件的方法。 所公开的膨胀塑料制品对于最终铸造中最终碳百分比为1.8重量％或更少的金属铸件是特别优选的。

公开(公告)号：US4201738A

公开(公告)日：1980-05-06

申请号：US936460

申请日：1978-08-24

申请人： David R. Johnson

发明人： David R. Johnson

IPC分类号： C01G43/01 ,  G21C21/00

CPC分类号： C01G43/01 ,  C01P2004/51 ,  C01P2004/61

摘要： A method is described for the preparation of U.sub.3 O.sub.8 nuclear fuel material by direct precipitation of uranyl formate monohydrate from uranyl nitrate solution. The uranyl formate monohydrate precipitate is removed, dried and calcined to produce U.sub.3 O.sub.8 having a controlled particle size distribution.

摘要翻译： 描述了通过从硝酸铀酰溶液直接沉淀甲酸铀酰一水合物制备U3O8核燃料材料的方法。 除去甲酸铀酰一水合物沉淀物，干燥并煅烧以产生具有受控粒度分布的U 3 O 8。

公开(公告)号：US4167468A

公开(公告)日：1979-09-11

申请号：US931225

申请日：1978-08-07

申请人： Paul R. Juckniess ,  David R. Johnson

发明人： Paul R. Juckniess ,  David R. Johnson

IPC分类号： C25C3/00 ,  C25C3/28 ,  C25C7/00 ,  C25C7/04 ,  C25C3/14 ,  C25C3/22 ,  C25C3/26

CPC分类号： C25C3/28 ,  C25C3/00 ,  C25C7/00 ,  C25C7/005 ,  C25C7/04

摘要： An apparatus to electrolytically produce multivalent metals, such as titanium, from compounds thereof. The apparatus includes a suitable containing body with an anode and a cathode in compartments therein spaced apart by a foraminous diaphragm with at least a surface portion consisting essentially of nickel or, preferably, cobalt. The diaphragm has a diaphragm coefficient of greater than zero to about 0.5 when the coefficient of flow is about 0.1 to about 25. A multivalent metal compound feed means is combined with the cathode compartment to supply a multivalent metal compound to a molten salt electrolyte in the cathode compartment. The apparatus is sealed from the atmosphere to avoid contamination of the bath and metal product with certain atmospheric gases. Means of providing sufficient electrical and thermal energy to operate the cell are provided.

摘要翻译： 从其化合物电解制造多价金属如钛的设备。 该装置包括一个合适的容纳体，其中阳离子和阴极分隔开，隔室内有多孔隔膜，至少一个表面部分基本上由镍组成，或最好由钴组成。 当流动系数为约0.1至约25时，膜片具有大于零至约0.5的膜片系数。多价金属化合物进料装置与阴极室结合，以将多价金属化合物供应至熔融盐电解质 阴极室。 该装置与大气密封，以避免浴和金属产品被某些大气气体污染。 提供了提供足够的电和热能来操作电池的手段。