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Design and operating parameters affecting an electrochlorination system

机译:影响电氯化系统的设计和运行参数

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Electrolysis of aqueous sodium chloride has been widely used in the chloro-alkali process, and its operating parameters are well-known. This electrochemical mechanism can be applied to both on-site chlorine production for disinfecting water in small-scale drinking water treatment plants and as a portable chlorine generator for emergency use or for campers. However, the design information and operating parameters affecting the current efficiency and power consumption of small-scale electrochlorination systems are limited even though these systems have become popular. We investigate the significant design and operating parameters affecting current efficiency and power consumption in an electrochlorination system. IrO2 electrodes, NaCl concentration, current density, a separator, and temperature control were selected as the design and operating parameters in the two-electrode batch system. The results show that the most important parameter affecting current efficiency and power consumption of chlorine generation was NaCl concentration. At low NaCl concentrations (1000 mg/L), the type of anode, current density, and the separator considerably affected current efficiency and power consumption to generate chlorine, whereas at high NaCl concentrations (>35,000 mg/L), anode type became insignificant, with current efficiency >90% and power consumption of 4-6 Wh/g.
机译:氯化钠水溶液的电解已广泛用于氯碱法,其操作参数是众所周知的。这种电化学机理既可用于现场生产氯气,以对小型饮用水处理厂中的水进行消毒,也可应用于应急用途或露营者的便携式氯气发生器。然而,即使这些系统已经普及,影响小型电氯化系统的电流效率和功耗的设计信息和操作参数仍然受到限制。我们研究了影响电氯化系统电流效率和功耗的重要设计和运行参数。 IrO2电极,NaCl浓度,电流密度,隔板和温度控制被选择为两电极间歇系统的设计和操作参数。结果表明,影响电流效率和氯气消耗功率的最重要参数是NaCl浓度。在低NaCl浓度(1000 mg / L)下,阳极的类型,电流密度和隔板会明显影响电流效率和产生氯气的功耗,而在高NaCl浓度(> 35,000 mg / L)下,阳极类型变得微不足道。 ,电流效率> 90%,功耗为4-6 Wh / g。

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