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    • 11. 发明授权
    • Method and apparatus for quantifying molybdate in absorption refrigeration system brines
    • 吸收制冷系统盐水中钼酸盐定量的方法和装置
    • US06358747B1
    • 2002-03-19
    • US09324376
    • 1999-06-02
    • David A. ConditMark R. JaworowskiXia Tang
    • David A. ConditMark R. JaworowskiXia Tang
    • G01N3320
    • G01N31/22G01N21/78
    • A method and apparatus are provided for quantifying molybdate corrosion inhibitor concentrations in lithium halide brines of absorption refrigeration systems. This permits monitoring and control of the inhibitor level. A reagent is chosen for reacting with the molybdate in the brine to provide a readily identifiable characteristic color, the intensity of which is a function and measure of the molybdate concentration. The reagent is an acidified reducing agent which reacts to provide a significant characteristic color capable of optical detection without interference. In a lithium bromide brine, the molybdate concentration is conveniently identified by reaction with stannous chloride SnCl in hydrochloric acid Hcl (). The resulting color corresponds to a wavelength of about 550-560 nm (pink), and the intensity is a function of molybdate concentration. Portable measuring equipment, such as a hand held spectrophotometer, or colorimeter, provide a convenient means for making on-site measurements.
    • 提供了一种用于量化吸收式制冷系统的卤化锂盐水中的钼酸盐腐蚀抑制剂浓度的方法和装置。 这允许监测和控制抑制剂水平。 选择试剂与盐水中的钼酸盐反应,以提供容易识别的特征颜色,其强度是钼酸盐浓度的函数和测量。 该试剂是一​​种酸化的还原剂,其反应以提供能够进行光学检测而不受干扰的显着特征色。 在溴化锂盐水中,通过与氯化亚锡SnCl在盐酸Hcl(