公开(公告)号：US06172863B2

公开(公告)日：2001-01-09

申请号：US09339678

申请日：1999-06-24

申请人： Hiroki Ito ,  Haruhiko Kohyama ,  Mikio Hidaka

发明人： Hiroki Ito ,  Haruhiko Kohyama ,  Mikio Hidaka

IPC分类号： H02H318

CPC分类号： H01H33/593 ,  H01H33/006 ,  Y10S323/908

摘要： A phase control switching system for controlling opening and closing timings of a power switching device to suppress the occurrence of an exciting rush current or a make-and-break surge voltage which is severe to system equipment such as a transformer, a reactor and a capacitor bank, or for controlling an arcing time of a circuit breaker to put the circuit breaker into operation for the arcing time leading to no-re-ignition or for the optimal breaking time. In the phase control switching system, a current measuring section or a current gradient measuring section is provided to measure a current value or a current gradient value of a current to be broken or introduced, and a reference phase detecting section estimates a current zero point of a current waveform on the basis of the measurements. Subsequently, a control section, upon receipt of an opening/closing command, an opening phase control operation using an arbitrary time point after the current waveform estimation as a reference.

摘要翻译： 一种用于控制电力开关装置的开闭定时的相位控制切换系统，以抑制对诸如变压器，电抗器和电容器的系统设备严重的激励冲击电流或制动和中断浪涌电压的发生 或用于控制断路器的电弧时间以将断路器投入运行，用于导致无再点火或最佳断开时间的电弧时间。 在相位控制切换系统中，提供电流测量部或电流梯度测量部，以测量待破坏或引入的电流的电流值或电流梯度值，并且基准相位检测部估计当前的零点 基于测量的电流波形。 随后，控制部分在接收到打开/关闭命令之后，使用在当前波形估计之后的任意时间点作为基准的打开相位控制操作。

公开(公告)号：US4264476A

公开(公告)日：1981-04-28

申请号：US85708

申请日：1979-10-17

申请人： Sumio Umemura ,  Kyoji Ohdan ,  Mikio Hidaka ,  Toshio Kurafuji

发明人： Sumio Umemura ,  Kyoji Ohdan ,  Mikio Hidaka ,  Toshio Kurafuji

IPC分类号： B01J27/057 ,  B01J23/88 ,  B01J35/10 ,  C07B61/00 ,  C07C67/00 ,  C07C253/00 ,  C07C255/08 ,  B01J29/00 ,  B01J27/02 ,  B01J29/10 ,  B01J29/16

CPC分类号： B01J23/8872 ,  B01J23/8876 ,  B01J23/8877 ,  B01J23/8878 ,  C07C253/26 ,  Y02P20/52

摘要： An improved catalyst suitable for use in the production of acrylonitrile by the catalytic ammoxidation of propylene in a fluidized bed reactor is provided. This catalyst contains 40 to 60% by weight of silica, in terms of SiO.sub.2 , and 60 to 40% by weight of a composition having the formula:Mo.sub.10 Co.sub.2-8 Ni.sub.0-8 Fe.sub.0.1-7 Bi.sub.0.1-3 Zr.sub.0.1-4 A.sub.0.01-1 X.sub.0-5 O.sub.32.5-78.5wherein A is the alkali metals, X is Ti, Te, V, Mn, Cr, W and/or Sn, provided that the total number of Co and Ni atoms is 2 to 10, and has 150 to 500 A of the average pore radius, 0.2 to 0.5 cm.sup.3 /g of the total pore volume and 30 to 60 m.sup.2 /g of the specific surface area. This catalyst has an improved attrition resistance and acrylonitrile can be produced, in the presence of this catalyst, at a high yield by the ammoxidation reaction of propylene in a fluidized bed reactor.

摘要翻译： 提供了一种适用于在流化床反应器中通过丙烯催化氨氧化制备丙烯腈的改进的催化剂。 该催化剂含有40至60重量％的二氧化硅，以SiO 2计，和60至40重量％的具有下列通式的组合物：Mo10Co2-8Ni0-8Fe0.1-7Bi0.1-3Zr0.1-4A0.01 -1 X0-5O32.5-78。

公开(公告)号：US4205010A

公开(公告)日：1980-05-27

申请号：US718513

申请日：1976-08-30

申请人： Sumio Umemura ,  Kyoji Ohdan ,  Taizo Uda ,  Tokuo Matsuzaki ,  Mikio Hidaka ,  Yasuo Nakamura ,  Masao Tsuruoka

发明人： Sumio Umemura ,  Kyoji Ohdan ,  Taizo Uda ,  Tokuo Matsuzaki ,  Mikio Hidaka ,  Yasuo Nakamura ,  Masao Tsuruoka

IPC分类号： C07B61/00 ,  B01J23/00 ,  B01J23/88 ,  B01J23/882 ,  B01J27/19 ,  C07C67/00 ,  C07C253/00 ,  C07C255/08 ,  C07C120/14

CPC分类号： C07C253/26 ,  B01J23/882 ,  B01J27/19 ,  Y02P20/52

摘要： Acrylonitrile can be catalytically produced with a high yield by bringing, at an elevated temperature, preferably of 300.degree. to 470.degree. C., a reaction feed containing propylene, ammonia and molecular oxygen into contact with a catalyst consisting of an oxide composition of the empirical formula: Mo.sub.a Co.sub.b Fe.sub.c X.sub.d O.sub.e wherein X denotes at least one atom of an element selected from phosphorus, arsenic, antimony and bismuth and wherein the ratio a:b:c:d:e is in a range of 12:4 to 9:1 to 5:0.01 to 0.07:39.5 to 52.7, said catalyst being prepared by providing an aqueous mixture containing molybdenum-, cobalt- and iron-containing compounds and a phosphorus-, arsenic-, antimony- or bismuth-containing compound, converting the aqueous mixture into a dried solid mixture and calcining the solid mixture at a temperature of at least 550.degree. C.

摘要翻译： 丙烯腈可以通过在升高的温度，优选在300-470℃下，使含有丙烯，氨和分子氧的反应进料与由经验的氧化物组成的催化剂接触而以高产率催化制备 式：MoaCobFecXdOe其中X表示选自磷，砷，锑和铋中的元素的至少一个原子，其中a:b:c:d:e的比率在12:4至9:1至5:1的范围内。 0.01至0.07：39.5至52.7，所述催化剂通过提供含有含钼，钴和铁的化合物和含磷，砷，锑或铋的化合物的含水混合物制备，将含水混合物转化为 干固体混合物并在至少550℃的温度下煅烧固体混合物

公开(公告)号：US4097518A

公开(公告)日：1978-06-27

申请号：US733771

申请日：1976-10-19

申请人： Sumio Umemura ,  Kyoji Ohdan ,  Taizo Uda ,  Tokuo Matsuzaki ,  Mikio Hidaka ,  Yasuo Nakamura ,  Tsuruoka, Masao

发明人： Sumio Umemura ,  Kyoji Ohdan ,  Taizo Uda ,  Tokuo Matsuzaki ,  Mikio Hidaka ,  Yasuo Nakamura ,  Tsuruoka, Masao

IPC分类号： B01J23/882 ,  C07C120/14

CPC分类号： C07C253/26 ,  B01J23/882 ,  Y02P20/52

摘要： High-yield catalytic production of acrylonitrile at an elevated temperature, from a reaction mixture containing propylene, ammonia and molecular oxygen, utilizing a catalyst comprising an oxide composition having the empirical formula Mo.sub.a Co.sub.b Fe.sub.c X.sub.d O.sub.e wherein X denotes at least one atom of an element selected from among calcium, tungsten, chromium, zirconium, titanium, zinc, manganese, and tin and the atomic ratio a:b:c:d:e is in the range of 12:4 to 10:1 to 6:0 to 1.0:40 to 70, said catalyst being prepared by providing an aqueous mixture containing compounds of the elements, drying the aqueous mixture, and calcining the dried solid product at a temperature of at least 500.degree. C.

摘要翻译： 使用包含具有经验式MoaCobFecXdOe的氧化物组合物的催化剂，从含有丙烯，氨和分子氧的反应混合物高温催化生产丙烯腈，其中X表示选自钙的元素的至少一个原子 ，钨，铬，锆，钛，锌，锰和锡，原子比a:b:c:d:e在12:4至10:1至6:0至1.0:40至70的范围内 所述催化剂通过提供含有元素化合物的水性混合物，干燥含水混合物和在至少500℃的温度下煅烧干燥的固体产物来制备。