Method of purification of .beta.-phenylethyl alcohol
    12.
    发明授权
    Method of purification of .beta.-phenylethyl alcohol 失效
    β-苯乙醇的纯化方法

    公开(公告)号:US4359365A

    公开(公告)日:1982-11-16

    申请号:US194859

    申请日:1980-10-07

    CPC分类号: C07C29/82 C07C29/80 C07C29/84

    摘要: A method of purification of crude .beta.-phenylethyl alcohol to give a highly pure .beta.-phenylethyl alcohol suitable as a perfume, which comprises subjecting the crude .beta.-phenylethyl alcohol to azeotropic distillation in the presence of an azeotropic solvent selected from water, an alkylene glycol, an alkylene glycol monoalkyl ether and a mixture of two or more kinds of these solvents, or extractive distillation in the presence of an extractive solvent selected from glycerine, an alkylene glycol, a polyalkylene glycol, an alkylene glycol monoalkyl ether, a polyalkylene glycol monoalkyl ether and a mixture of two or more kinds of these solvents.

    摘要翻译: 一种净化粗β-苯乙醇的方法,得到适合作为香料的高纯度β-苯乙醇,其包括在粗品β-苯乙醇在共沸溶剂存在下进行共沸蒸馏,所述共沸溶剂选自水,亚烷基二醇 ,亚烷基二醇单烷基醚和两种或更多种这些溶剂的混合物,或在萃取溶剂存在下萃取蒸馏,所述萃取溶剂选自甘油,亚烷基二醇,聚亚烷基二醇,亚烷基二醇单烷基醚,聚亚烷基二醇单烷基 乙醚和两种或更多种这些溶剂的混合物。

    Process for the preparation of esters
    13.
    发明授权
    Process for the preparation of esters 失效
    制备酯的方法

    公开(公告)号:US4206310A

    公开(公告)日:1980-06-03

    申请号:US940757

    申请日:1978-09-08

    IPC分类号: C07C67/08 C07D315/00

    CPC分类号: C07C67/08 C07D315/00

    摘要: An improved process for producing an ester from a carboxylic acid and an alcohol which comprises reacting said carboxylic acid with said alcohol by the use of a 1-substituted-2-halopyridinium salt or a 1-substituted-2-haloquinolinium salt as a condensing agent in the presence of a hydrogen halide captor. According to this process, various esters, even if they have some steric hindrances, may be obtained in good yields.

    摘要翻译: 一种由羧酸和醇生产酯的改进方法,其包括通过使用1-取代-2-卤代吡啶鎓盐或1-取代-2-卤代喹啉鎓盐作为缩合剂使所述羧酸与所述醇反应 在存在卤化氢捕集剂的情况下。 根据该方法,可以以良好的收率获得各种酯,即使它们具有一些空间位阻。

    Heat dissipation unit for cross flow type cooling tower and process for
making the same
    14.
    发明授权
    Heat dissipation unit for cross flow type cooling tower and process for making the same 失效
    用于横流式冷却塔的散热单元及其制造方法

    公开(公告)号:US6105663A

    公开(公告)日:2000-08-22

    申请号:US708717

    申请日:1996-09-05

    摘要: The present invention relates to a heat dissipation unit for cross flow type cooling tower with which it is possible to prevent the emission of white vapor without lowering the cooling power of the cooling tower, and also without requiring troublesome routine operation. In order to accomplish the above object, the heat dissipation unit of the present invention comprises filling plates arranged vertically and parallel with each other so as to form spaces therebetween, each of the filling plates having uneven surfaces down which water to be cooled flows when water to be cooled is supplied onto the filling plates, and cowl members disposed between neighboring filling plates, each of the cowl members including a pair of side plate portions having upper ends and a roof portion connecting the upper ends of the side plate portions. The side plate portions of the cowl members are arranged substantially parallel with the filling plates so as to form gaps between the filling plates and the side plate portions of the cowl members.

    摘要翻译: 本发明涉及一种用于横流型冷却塔的散热单元,其可以防止白蒸汽的发射而不降低冷却塔的冷却功率,并且也不需要麻烦的日常操作。 为了实现上述目的,本发明的散热单元包括彼此垂直且平行布置的填充板,以便在它们之间形成空间,每个填充板具有不平坦的表面,当水被冷却时,待冷却的水流动 要被冷却的物品被供应到填充板上,并且前围组件设置在相邻的填充板之间,每个前围构件包括一对具有上端的侧板部和连接侧板部的上端的顶部部分。 整流罩构件的侧板部分布置成与填充板基本平行,以便在整流罩构件的填充板和侧板部分之间形成间隙。

    Cooling tower
    15.
    发明授权
    Cooling tower 失效
    冷却塔

    公开(公告)号:US5800743A

    公开(公告)日:1998-09-01

    申请号:US708716

    申请日:1996-09-05

    摘要: The present invention relates to a cross flow type cooling tower with which it is possible to prevent the emission of white vapor in cold weather with certainty. In order to accomplish the above object, the cooling tower of the present invention comprises: a heat dissipation unit having filling plates arranged vertically and parallel with each other so as to form dry air passages and moist air passages therebetween, each of the dry air passages and the moist air passages having inner surfaces; water supply means for supplying water to be cooled to the inner surfaces of the moist air passages for cooling the water by contact with air passing through the moist air passage; and water invasion stoppers provided at side ends of the filling plates for preventing the water flowing down the inner surfaces of the moist air passages from invading the dry air passages.

    摘要翻译: 本发明涉及一种横流型冷却塔,可以在寒冷的天气中确定地防止白色蒸汽的排放。 为了实现上述目的,本发明的冷却塔包括:具有彼此垂直且平行布置的填充板的散热单元,以在其间形成干燥空气通道和湿气通道,每个干燥空气通道 湿空气通道具有内表面; 供水装置,用于将冷却的水供应到湿空气通道的内表面,用于通过与通过湿空气通道的空气接触来冷却水; 以及设置在填充板的侧端处的防水挡板,用于防止水从湿空气通道的内表面向下流入侵入干燥空气通道。

    Heat dissipation unit for cross flow type cooling tower and process for
making the same
    17.
    发明授权
    Heat dissipation unit for cross flow type cooling tower and process for making the same 失效
    用于横流式冷却塔的散热单元及其制造方法

    公开(公告)号:US5695006A

    公开(公告)日:1997-12-09

    申请号:US708717

    申请日:1996-09-05

    摘要: The present invention relates to a heat dissipation unit for cross flow type cooling tower with which it is possible to prevent the emission of white vapor without lowering the cooling power of the cooling tower, and also without requiring troublesome routine operation. In order to accomplish the above object, the heat dissipation unit of the present invention comprises filling plates arranged vertically and parallel with each other so as to form spaces therebetween, each of the filling plates having uneven surfaces down which water to be cooled flows when water to be cooled is supplied onto the filling plates, and cowl members disposed between neighboring filling plates, each of the cowl members including a pair of side plate portions having upper ends and a roof portion connecting the upper ends of the side plate portions. The side plate portions of the cowl members are arranged substantially parallel with the filling plates so as to form gaps between the filling plates and the side plate portions of the cowl members.

    摘要翻译: 本发明涉及一种用于横流型冷却塔的散热单元,其可以防止白蒸汽的发射而不降低冷却塔的冷却功率,并且也不需要麻烦的日常操作。 为了实现上述目的,本发明的散热单元包括彼此垂直且平行布置的填充板,以便在它们之间形成空间,每个填充板具有不平坦的表面,当水被冷却时,待冷却的水流动 要被冷却的物品被供应到填充板上,并且前围组件设置在相邻的填充板之间,每个前围构件包括一对具有上端的侧板部和连接侧板部的上端的顶部部分。 整流罩构件的侧板部分布置成与填充板基本平行,以便在整流罩构件的填充板和侧板部分之间形成间隙。

    Convergence displacement correcting device for projection-type image
display apparatus and method thereof
    18.
    发明授权
    Convergence displacement correcting device for projection-type image display apparatus and method thereof 失效
    投影型图像显示装置的会聚位移校正装置及其方法

    公开(公告)号:US5473391A

    公开(公告)日:1995-12-05

    申请号:US233527

    申请日:1994-04-26

    申请人: Masahiro Usui

    发明人: Masahiro Usui

    CPC分类号: H04N9/28 H04N3/233 H04N9/31

    摘要: A projection-type image display apparatus, in which a correction raster shape correction circuit is supplied with a sawtoothed-shaped voltage changing in level in accordance with a static convergence regulation voltage for correcting respective raster shapes displayed on the respective picture planes of a plurality of cathode-ray tubes, so that the convergence is not displaced at the peripheral portions of the picture screen at the time of regulating the static convergence.

    摘要翻译: 一种投影型图像显示装置,其中向矫正光栅形状校正电路提供根据用于校正显示在多个图像的各个图像平面上的各个光栅形状的静态会聚调节电压的锯齿状电压 阴极射线管,使得在调节静态会聚时,会聚不在画面的周边部分移位。

    Process for preparing alkyl-substituted aromatic hydrocarbons
    19.
    发明授权
    Process for preparing alkyl-substituted aromatic hydrocarbons 失效
    制备烷基取代芳烃的方法

    公开(公告)号:US5347062A

    公开(公告)日:1994-09-13

    申请号:US21852

    申请日:1993-02-24

    IPC分类号: C07C2/72 C07C2/66

    摘要: An alkyl-substituted hydrocarbon is prepared by alkylating an aromatic hydrocarbon having at least one hydrogen atom at an alpha-position in a side chain with an olefin in the presence of a solid base which is obtainable by heating an alumina, an alkali metal hydroxide and an alkali metal or an alumina containing at least 1.3% by weight of water and an alkali metal in an inert gas atmosphere at a specific temperature as a catalyst.

    摘要翻译: 烷基取代的烃是通过在固体碱的存在下,通过将烯烃在侧链的α位上具有至少一个氢原子的芳族烃烷基化而制备的,该固体碱可以通过加热氧化铝,碱金属氢氧化物和 碱金属或含有至少1.3重量%水和碱金属的氧化铝在惰性气体气氛中作为催化剂。