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    • 1. 发明授权
    • Dual wall turbine blade ultrasonic wall thickness measurement technique
    • 双壁涡轮叶片超声波壁厚测量技术
    • US07272529B2
    • 2007-09-18
    • US11178020
    • 2005-07-08
    • Robert J. HoganJames A. HallSurendra Singh
    • Robert J. HoganJames A. HallSurendra Singh
    • G01B5/02
    • F01D21/003G01B17/02
    • A method and apparatus is provided to analyze a dual wall structure having at least one hollow core therein and having the same unknown material sound velocities in walls and in post as well. A transducer is located in at least two different positions with respect to the structure, whereby the transducer propagates an ultrasonic wave toward the dual wall structure. A portion of the ultrasonic wave is reflected back to the transducer. One wave traverses a portion of the dual wall structure that has a core filled with a medium having a known material acoustic property. A second wave traverses a portion of the post that has an unknown material sound velocity. From time of flight measurements of the above mentioned waves, the wall thickness and core shift, if any, can be determined.
    • 提供了一种方法和装置来分析其中具有至少一个中空芯的双壁结构,并且在壁和柱中也具有相同的未知材料声速。 传感器相对于结构位于至少两个不同的位置,由此换能器将超声波传播到双壁结构。 超声波的一部分被反射回换能器。 一个波浪穿过具有填充有具有已知材料声学特性的介质的芯的双壁结构的一部分。 第二波穿过具有未知材料声速的柱的一部分。 从上述波的飞行时间测量,可以确定壁厚和芯移动(如果有的话)。
    • 6. 发明授权
    • Improving the life of a catalyst used to process hydrocarbon containing
feed streams
    • 改善用于处理含烃进料流的催化剂的寿命
    • US4715948A
    • 1987-12-29
    • US581458
    • 1984-02-17
    • Edward L. Sughrue, IISimon G. KukesRobert J. Hogan
    • Edward L. Sughrue, IISimon G. KukesRobert J. Hogan
    • C10G45/04C10G45/08C10G45/00C03C6/08
    • C10G45/08C10G45/04
    • In a hydrofining process, the life of a catalyst composition comprising a support selected from the group comprising alumina, silica and silica-alumina and a promoter comprising at least one metal selected from Group VIB, Group VIIB, and Group VIII of the periodic table is improved by mixing a decomposable compound of molybdenum with the hydrocarbon-containing feed stream prior to contacting the hydrocarbon-containing feed stream with the catalyst composition. The molybdenum in the decomposable compound is in valence state of zero. A sufficient quantity of the decomposable compound of molybdenum is added to the hydrocarbon-containing feed stream to result in a concentration of molybdenum in the range of about 1 to about 60 ppm. The introduction of the decomposable compound of molybdenum may be commenced when the catalyst is new, partially deactivated or spent with a beneficial result occurring in each case.
    • 在加氢精制方法中,包含选自氧化铝,二氧化硅和二氧化硅 - 氧化铝的载体的催化剂组合物和包含选自元素周期表第VIB族,第VIIB族和第Ⅷ族中的至少一种金属的促进剂的催化剂组合物的寿命是 在将含烃进料流与催化剂组合物接触之前,通过将钼的可分解化合物与含烃进料流混合来改进。 可分解化合物中的钼的价态为零。 将足够量的可分解钼的化合物加入到含烃进料流中,导致钼浓度在约1至约60ppm的范围内。 当催化剂是新的,部分失活的或者在每种情况下都会产生有益结果的情况下,可以开始引入可分解的钼化合物。