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    Air lay-down process for producing uniform lightweight webs from textile fibers
    3.
    发明授权
    Air lay-down process for producing uniform lightweight webs from textile fibers 失效
    用于从纺织纤维生产均匀轻质网的空气铺设工艺

    公开(公告)号：US4089086A

    公开(公告)日：1978-05-16

    申请号：US636628

    申请日：1975-12-01

    申请人： Rashmikant Maganlal Contractor ,  Sang-Hak Hwang

    发明人： Rashmikant Maganlal Contractor ,  Sang-Hak Hwang

    IPC分类号： D01G25/00 ,  D04H1/72 ,  D04H1/00

    CPC分类号： D04H1/72

    摘要： Process is disclosed which is suitable for high speed production of uniform, lightweight webs by air-laydown of textile fibers. A toothed disperser roll doffs the fibers into an air stream of high uniform velocity and low turbulence to form a thin fiber layer from which the fibers are deposited in web form on a moving screen. A curved disperser plate, shrouds a portion of the disperser roll up to the point of fiber doffing. By using a disperser plate with a rough surface, preferably one having lateral grooves, web uniformity is remarkably improved.

    摘要翻译： 公开了适于通过纺织纤维的空气沉积来高速生产均匀的轻质纤维网的方法。 齿状分散辊将纤维落到高均匀速度和低湍流的空气流中以形成纤维层，纤维以网状形式沉积在移动筛网上。 一个弯曲的分散板，将一部分分散辊卷绕到纤维落纱点。 通过使用具有粗糙表面的分散板，优选具有侧向凹槽的分散板，幅材均匀性显着提高。

    Process for manufacture and use of improved attrition resistant catalyst
    4.
    发明授权
    Process for manufacture and use of improved attrition resistant catalyst 失效
    制造和使用改进的耐磨耗催化剂的方法

    公开(公告)号：US6107238A

    公开(公告)日：2000-08-22

    申请号：US163680

    申请日：1998-09-30

    申请人： Rashmikant Maganlal Contractor ,  William Joseph Letts

    发明人： Rashmikant Maganlal Contractor ,  William Joseph Letts

    IPC分类号： B01J23/22 ,  B01J35/00 ,  B01J37/00 ,  C07B41/08 ,  C07B43/08 ,  C07B61/00 ,  B01J21/08 ,  B01J2/08 ,  B01J23/28

    CPC分类号： B01J37/0045 ,  B01J35/0013 ,  Y10S502/504

    摘要： A method for manufacturing of an improved attrition resistant catalyst having an oxide-rich surface layer involving forming a slurry comprising; catalyst, catalyst precursor or catalyst support particles (e.g., transition metal oxides), a colloidal oxide sol (e.g., colloidal silica), and a solution of a solvent and solute wherein the solute consist essentially of a precursor of said oxide-rich surface with particle size no greater than 5 nm (e.g., aqueous silicic acid or polysilicic acid) and then spray drying the slurry to form porous microspheres of attrition resistant catalyst; and, calcining the spray dried microspheres. Such a catalyst is particularly useful in oxidation processes wherein the oxidation is performed by an oxidized form of the catalyst and the resulting reduced form of the catalyst is separately regenerated (e.g., two-step vapor phase processes carried out in recirculating solids reactors, transport bed reactors or circulating fluidized bed reactors and the like).

    摘要翻译： 一种制备具有富含氧化物的表面层，包括形成浆料的改进的耐磨耗催化剂的方法，包括： 催化剂前体或催化剂载体颗粒（例如过渡金属氧化物），胶体氧化物溶胶（例如胶体二氧化硅）和溶剂和溶质的溶液，其中溶质基本上由富含氧化物的表面的前体组成 粒径不大于5nm（例如硅酸或聚硅酸水溶液），然后喷雾干燥该浆料，形成耐磨催化剂的多孔微球; 并煅烧喷雾干燥的微球。 这种催化剂在氧化过程中特别有用，其中氧化是通过催化剂的氧化形式进行的，并且所得到的还原形式的催化剂被单独再生（例如，在循环固体反应器，运输床中进行的两步气相方法 反应器或循环流化床反应器等）。

    Process for making an apertured nonwoven fabric
    5.
    发明授权
    Process for making an apertured nonwoven fabric 失效
    制造有孔无纺布的方法

    公开(公告)号：US4024612A

    公开(公告)日：1977-05-24

    申请号：US673343

    申请日：1976-04-02

    申请人： Rashmikant Maganlal Contractor ,  Birol Kirayoglu

    发明人： Rashmikant Maganlal Contractor ,  Birol Kirayoglu

    IPC分类号： D04H1/46 ,  D04H18/04 ,  D04H18/00 ,  D04H5/02

    CPC分类号： D04H18/04 ,  D04H1/495

    摘要： The tensile strength of apertured nonwoven fabric can be increased by a change in the two-stage process of impinging fine columnar streams of liquid, first onto one face of a fibrous web and then onto the opposite face thereof, the change being that the asymmetrical woven wire screen on which the web is positioned during the second stage of the process is oriented with the wire forming the higher knuckle in the screen running in the direction of passage of the web beneath the fine columnar streams, with the area weight of the web being from 0.5 to 2.0 oz/yd.sup.2.

    摘要翻译： 有孔非织造织物的拉伸强度可以通过将细柱状液体流冲击的两个阶段的过程首先在纤维网的一个面上再到其相对的面上而改变，改变是不对称编织 纸幅在该过程的第二阶段期间位于其上的丝网被定向，其中丝线在筛网中形成更高的转向节，其沿网状物沿着细柱状流的通过方向运行，幅材的面积重量为 从0.5至2.0盎司/ yd2。

    Process for the calcination/activation of V/P/O catalyst
    6.
    发明授权
    Process for the calcination/activation of V/P/O catalyst 失效
    V / P / O催化剂的煅烧/活化方法

    公开(公告)号：US5895821A

    公开(公告)日：1999-04-20

    申请号：US940718

    申请日：1997-09-30

    申请人： Rashmikant Maganlal Contractor ,  Harold Saul Horowitz ,  Gregory Scott Patience ,  John Donal Sullivan

    发明人： Rashmikant Maganlal Contractor ,  Harold Saul Horowitz ,  Gregory Scott Patience ,  John Donal Sullivan

    IPC分类号： B01J27/198 ,  C07D307/60

    CPC分类号： C07D307/60 ,  B01J23/002 ,  B01J27/198 ,  B01J2523/00

    摘要： An improved process for calcination and activation of a catalyst containing mixed oxides of vanadium and phosphorus (V/P/O) involving the addition of spray dried catalyst precursor to a fluidizing oxygen containing gas at a controlled rate such that the temperature is maintained at a range of 370 to 410.degree. C. (preferably 390.+-.5.degree. C.). The catalyst precursor experiences, in addition to rapid temperature rise, dehydration/calcination at this elevated temperature in the fluidized state for an average range of residence time of less than about 4 hours at 3.5 atm of air or above, and up to 20 hours at 1 atm of air while simultaneously and continuously maintaining an average V.sub.ox of 4.55 or less. Such a process is useful in preparing a V/P/O catalyst that exhibits enhanced activity for the oxidation of n-butane to maleic anhydride. The novel process also provides an improved method for start-up of a commercial scale recirculating solids reactor.

    摘要翻译： 一种用于煅烧和活化含有钒和磷的混合氧化物（V / P / O）的催化剂的改进方法，其涉及将喷雾干燥的催化剂前体以受控的速率加入到含流化气体的气体中，使得温度保持在 范围为370至410℃（优选390 +/- 5℃）。 除了快速升温之外，催化剂前体还经历在流化状态下的这个升高温度下的脱水/煅烧，在3.5atm空气或以上的平均停留时间范围小于约4小时，并且在高达20小时 1atm的空气，同时且连续地维持4.55或更低的平均Vox。 这种方法可用于制备对正丁烷氧化成马来酸酐具有增强的活性的V / P / O催化剂。 该新方法还提供了一种用于启动商业规模循环固体反应器的改进方法。

    Prevention of fibers from entering the pinch point between a rotating feed roll and a stationary shoe
    7.
    发明授权
    Prevention of fibers from entering the pinch point between a rotating feed roll and a stationary shoe 失效
    防止纤维进入旋转进给辊和固定鞋之间的夹点

    公开(公告)号：US4064597A

    公开(公告)日：1977-12-27

    申请号：US732484

    申请日：1976-10-14

    申请人： Rashmikant Maganlal Contractor ,  William Carter Dodson, Jr. ,  James John Hentges ,  Earl Edwin Seppala

    发明人： Rashmikant Maganlal Contractor ,  William Carter Dodson, Jr. ,  James John Hentges ,  Earl Edwin Seppala

    IPC分类号： D04H1/72 ,  D04H1/00

    CPC分类号： D04H1/72

    摘要： A compressed batt of fibers is fed against a rotating toothed roll for dispersion of the fibers from the batt and this dispersion of fibers is fed through the point of closest clearance between the toothed roll and a feed roll rotating in the opposite direction. Downstream of this point of closest clearance, a stationary shoe is provided spaced from the surface of the toothed roll to permit the dispersion of fibers to follow the surface of the toothed roll. The shoe is closely fitted to the surface of the feed roll which has the effect of forming a pinch point where the feed roll enters beneath the shoe. In accordance with the invention, the shoe is equipped with passages for the flow of air to exit at the pinch point to prevent fibers from entering the pinch point, i.e., between the feed roll and shoe.

    摘要翻译： 将压缩的纤维絮垫馈送到旋转的带齿辊上，以使来自絮垫的纤维分散，并且该纤维分散体通过齿轮与沿相反方向旋转的进料辊之间的最大间隙的点进给。 在这个最接近的间隙的下游，固定的鞋被提供为与齿形辊的表面间隔开，以允许纤维的分散跟随齿轮的表面。 鞋子紧密地配合到进给辊的表面上，其具有形成夹紧点的作用，在该点处进给辊进入鞋底。 根据本发明，鞋配备有用于空气流在夹点处离开的通道，以防止纤维进入夹点，即进料辊和鞋之间。

    Process for making nonwoven fabric
    8.
    发明授权
    Process for making nonwoven fabric 失效
    制造无纺布的方法

    公开(公告)号：US4069563A

    公开(公告)日：1978-01-24

    申请号：US673342

    申请日：1976-04-02

    申请人： Rashmikant Maganlal Contractor ,  Birol Kirayoglu

    发明人： Rashmikant Maganlal Contractor ,  Birol Kirayoglu

    IPC分类号： D04H1/46 ,  D04H18/04 ,  D04H18/00 ,  D04H5/02

    CPC分类号： D04H18/04 ,  D04H1/492

    摘要： The tensile strength of nonwoven fabric made by traversing a fibrous web on an apertured support with fine columnar streams of liquid is increased when the fine columnar streams are divided up into an array of a plurality of rows of streams, instead of a single row, with the streams in each row being staggered from one another and the rows being spaced 10 to 80 mils apart.

    摘要翻译： 当微细柱状流被划分成多行流的阵列而不是单行时，通过在具有细柱状液体流的多孔载体上横过纤维网而制成的无纺织物的拉伸强度增加， 每行中的流彼此交错排列，间隔10至80密耳。

    Process for forming a staple fiber batt
    9.
    发明授权
    Process for forming a staple fiber batt 失效
    用于形成短纤维毡的方法

    公开(公告)号：US4043005A

    公开(公告)日：1977-08-23

    申请号：US698590

    申请日：1976-06-22

    申请人： Rashmikant Maganlal Contractor ,  Sang-Hak Hwang

    发明人： Rashmikant Maganlal Contractor ,  Sang-Hak Hwang

    IPC分类号： D04H1/72 ,  D01G25/00

    CPC分类号： D04H1/72

    摘要： A staple fiber batt of improved uniformity is made by the fibers falling onto a moving conveyor, skimming off the top of the batt by jets of air flowing across the top of the batt, which thereby determines the level of the batt, and redepositing the skimmed off fibers onto said batt. The batt can then be compacted for further processing.

    摘要翻译： 通过纤维落在移动的传送带上，通过流过絮垫顶部的空气喷射器撇去絮垫的顶部，从而确定了絮垫的水平，并重新沉积撇渣 将纤维放在所述絮垫上。 然后可以将絮垫压实以进一步处理。