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    • 56. 发明授权
    • Method and device for recovering fine sand from a floating dredger
    • 从浮式挖泥船回收细沙的方法和装置
    • US06533944B1
    • 2003-03-18
    • US09480592
    • 2000-01-07
    • Wolfgang Rohr
    • Wolfgang Rohr
    • B01D3304
    • B03B9/00E02F7/023E02F7/065
    • The method relates to the recovery of fine sand on floating production equipment in the form of a floating grab-bucket type excavator or floating bucket chain dredger. In this case, the dredged material is dewatered and transported to shore via floating conveyor belts. The dredged material is transferred to dewatering screening machine having a dewatering deck with a dewatering coating. Below the dewatering deck the screening machine has a blind bottom covering the entire surface area, whereby in the direction of conveyance the end zone is provided with a discharge. The discharge is directed at a hydro belt separator, which has a revolving endless conveyor belt with a washing trough as the separation bed, and an ascending part leading away from the washing trough. The running direction of the conveyor belt is in the direction of the ascent, whereby the dredged material is transferred at the discharge of the screening machine to the washing trough of the hydro belt separator.
    • 该方法涉及以浮式抓斗式挖掘机或浮式铲斗链式挖泥船的形式回收浮式生产设备上的细砂。 在这种情况下,疏浚物质通过浮动输送带脱水并输送到岸边。 疏浚材料被转移到具有脱水层的脱水筛分机上。 在脱水甲板的下方,筛选机具有覆盖整个表面区域的盲底,从而在输送方向上设有排出口。 排放指向一个水力带分离器,该分离器具有带有作为分离床的洗涤槽的旋转环形输送带以及远离洗涤槽的上升部分。 输送带的运行方向是上升的方向,由此将疏浚物料在筛分机的排放口转移到水力分离器的清洗槽。
    • 60. 发明授权
    • Preparation of 5-fluoro-2-phenyl-4H-3,1-benzoxazin-4-ones
    • 制备5-氟-2-苯基-4H-3,1-苯并恶嗪-4-酮
    • US4562254A
    • 1985-12-31
    • US655726
    • 1984-09-28
    • Jurgen VarwigGerhard HamprechtWolfgang Rohr
    • Jurgen VarwigGerhard HamprechtWolfgang Rohr
    • C07D265/22C07D265/10
    • C07D265/22
    • 5-Fluorobenzoxazinones (I) ##STR1## where R is hydrogen, halogen, C.sub.1 -C.sub.3 -alkyl, or trifluoromethyl, trifluoromethoxy, chlorodifluoromethoxy, difluoromethoxy, tetrafluoroethoxy, trifluoromethylmercapto or chlorodifluoromethylmercapto in the m- or p-position, are prepared by reacting the corresponding benzoxazinone (II) ##STR2## in particular one which is 5-chloro-substituted or 5-bromo-substituted, with a fluoride, in particular potassium fluoride, in the presence or absence of a solvent, by a process in which the reaction is carried out in the absence of water or using previously dried starting materials, and in the presence or absence of a decomposition inhibitor, drying preferably being carried out by treatment with an acid halide, e.g. thionyl chloride, and the inhibitor used being a metal iodide, e.g. sodium iodide, or iodine.
    • 制备5-氟苯并恶嗪酮(I)其中R是氢,卤素,C 1 -C 3 - 烷基或三氟甲基,三氟甲氧基,氯代二氟甲氧基,二氟甲氧基,四氟乙氧基,三氟甲基巯基或氯代二氟甲基巯基在m-或p-位上 通过使相应的苯并恶嗪酮(II)(II)特别是5-氯取代或5-溴取代的苯并恶嗪酮(II)与氟化物,特别是氟化钾在溶剂存在或不存在下,通过 反应在没有水或使用预先干燥的原料的情况下进行的方法,并且在存在或不存在分解抑制剂的情况下,干燥优选通过用酰卤处理,例如 亚硫酰氯,并且使用的抑制剂是金属碘化物,例如。 碘化钠或碘。