Process for the production of crystalline adduct of bisphenol A and
phenol and apparatus therefor
    6.
    发明授权
    Process for the production of crystalline adduct of bisphenol A and phenol and apparatus therefor 失效
    制备双酚A和苯酚结晶加合物的方法及其设备

    公开(公告)号:US5368827A

    公开(公告)日:1994-11-29

    申请号:US967373

    申请日:1992-10-28

    IPC分类号: C07C37/84 C07C37/20

    摘要: High purity, crystalline adduct of bisphenol A and phenol is produced multi-stage crystallization of a phenolic slurry of bisphenol A with a crystal separation and washing step being interposed between each of the two stages. Each of the crystallization stage includes a series of crystallization towers operated at decreasing temperatures. The crystallization of the slurry is performed by continuously discharging a portion of the slurry from each of the crystallization towers, introducing the discharged slurry into one or more coolers and then recycling the cooled slurry to the tower. Another portion of the slurry in each crystallization slurry is continuously discharged, heated for dissolving fine crystals of the adduct and then recycled to the crystallization tower so that large crystals are grown in each of the crystallization steps. An apparatus having a plurality of coolers and suitable for effecting the above crystallization is also disclosed.

    摘要翻译: 双酚A和苯酚的高纯度结晶加合物产生双酚A的酚浆料的多阶段结晶,在两个阶段之间插入晶体分离和洗涤步骤。 每个结晶阶段包括在降低的温度下运行的一系列结晶塔。 浆料的结晶通过从每个结晶塔连续排出一部分浆料,将排出的浆料引入一个或多个冷却器中,然后将冷却的浆料再循环到塔中来进行。 每个结晶浆料中的浆料的另一部分被连续排出,加热以溶解加合物的微细晶体,然后再循环至结晶塔,使得在每个结晶步骤中生长大的晶体。 还公开了一种具有多个冷却器并适于实现上述结晶的设备。

    Lamp life meter and endoscope light source unit
    9.
    发明授权
    Lamp life meter and endoscope light source unit 有权
    灯寿命计和内窥镜光源单元

    公开(公告)号:US06307332B1

    公开(公告)日:2001-10-23

    申请号:US09525880

    申请日:2000-03-15

    IPC分类号: H05B3702

    CPC分类号: H05B37/03

    摘要: A light source having a lamp for generating light generates a lamp on signal at an output terminal thereof when the lamp is lit. A lamp life meter is connected to the light source for detecting the time that the lamp has been lit. The lamp life meter includes a housing having at least one contact terminal adapted to be coupled to the output terminal of the light source, a clock generator located in the housing and generating clock signals, a counter located in the housing and counting the clock signals whenever the clock on signal indicates that the lamp is on and a display mounted in the housing for displaying an indication of the time the lamp has been turned on.

    摘要翻译: 具有用于产生光的灯的光源在灯点亮时在其输出端产生灯开启信号。 灯寿命计连接到光源,用于检测灯已经点亮的时间。 灯寿命计包括壳体,其具有适于耦合到光源的输出端的至少一个接触端子,位于壳体中并产生时钟信号的时钟发生器,位于壳体中的计数器,并且每时钟计数时钟信号 时钟接通信号表示灯已亮起,并且显示器安装在外壳中,用于显示灯已经开启的时间的指示。

    Method of heat transfer in reformer
    10.
    发明授权
    Method of heat transfer in reformer 失效
    重整器传热方法

    公开(公告)号:US5876469A

    公开(公告)日:1999-03-02

    申请号:US748723

    申请日:1996-11-14

    摘要: A reformed gas composed mainly of hydrogen and carbon monoxide to be used for a fuel cell is produced by using a multi-tubular reformer provided with bayonet type double-wall catalyst tubes and feeding hydrocarbon gas such as natural gas and steam to the reformer. Porous media of a ceramic material are arranged in such a manner in a shell side flue gas inlet part of the interior of the reformer as to envelop the leading end parts of the catalyst tubes. The transfer of heat from the flue gas to the catalyst tubes is enhanced because the porous media accumulate the heat from the flue gas and radiate the accumulated heat in the direction of the walls of the outer tubes of the catalyst tubes. The otherwise possible uneven transfer of heat to the catalyst tubes is prevented because the wall effect and the channelling of the flue gas are repressed. This invention, therefore, permits effective utilization of the thermal energy of the flue gas for the reforming reaction and enables the reformer to be stably operated.

    摘要翻译: 通过使用设置有卡口式双壁催化剂管的多管重整器,并将碳氢化合物气体如天然气和蒸汽加入到重整器中,生产主要用于燃料电池的氢和一氧化碳的重整气体。 陶瓷材料的多孔介质以这种方式设置在重整器内部的壳侧烟道气入口部分中,以包封催化剂管的前端部分。 由于多孔介质积聚来自烟道气的热量并且在催化剂管的外管的壁的方向上辐射累积的热量,所以将热量从烟道气传递到催化剂管被增强。 否则可能不均匀地传递热量到催化剂管,因为壁效应和烟气的通道被压制。 因此,本发明允许有效利用用于重整反应的烟道气的热能,并使重整器稳定地工作。