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Selecting a Corrosion-Resistant Heat Exchanger to Cool Sulfuric Acid

机译:选择耐腐蚀的热交换器来冷却硫酸

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摘要

Typically, heat exchangers are fabricated from steel, tantalum and other metals, fluo-ropolymers, glass or graphite. However, when dealing with diluted sulfuric acid, the list of appropriate construction materials is greatly reduced to fluoropolymers, glass, graphite and tantalum. Along with how well they handle corrosive sulfuric acid, these materials may be greatly affected by changes in temperature, concentration level or the pH of the process stream. Also, some materials are more inherently suscep- tible to thermal and mechanical shock. Finally, specific applications may have their own set of process and equipment issues that can detrimentally affect different materials. This overview describes the advantages and disadvantages of various heat exchanger construction materials and offers criteria for selecting one heat exchanger versus another for diluted sulfuric acid applications.
机译:通常,热交换器由钢,钽和其他金属,含氟聚合物,玻璃或石墨制成。但是,在处理稀硫酸时,合适的建筑材料清单大大减少了含氟聚合物,玻璃,石墨和钽。随着它们对腐蚀性硫酸的处理能力的提高,这些材料可能会受到温度,浓度水平或工艺流程pH值变化的极大影响。同样,某些材料本来就更容易受到热冲击和机械冲击。最后,特定的应用程序可能会有其自己的一组过程和设备问题,这些问题可能会不利地影响不同的材料。本概述描述了各种热交换器建筑材料的优缺点,并提供了选择一个热交换器与另一个用于稀硫酸应用的标准。

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  • 来源
    《Process Heating》 |2013年第10期|24-26|共3页
  • 作者

    Frank Vito;

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  • 正文语种 eng
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