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首页> 外文会议>32nd Annual Hydrometallurgy Meeting and International Conference on the Practice and Theory of Chloride/Metal Interaction, Vol.2, Oct 19-23, 2002, Montreal, Quebec, Canada >Comparison of Spray Roasting and Fluidised Bed Granulation for the Recovery of Hydrochloric Acid from Metallurgical Processes through Pyrohydrolysis
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Comparison of Spray Roasting and Fluidised Bed Granulation for the Recovery of Hydrochloric Acid from Metallurgical Processes through Pyrohydrolysis

机译：喷雾焙烧和流化床造粒通过热解从冶金过程中回收盐酸的比较

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摘要

Pyrohydrolysis of metal chloride solutions, especially for recovery of spent pickle liquor, is done by two competitive process technologies: spray roasting and fluidised bed granulation. Both of them are relying on direct heat transfer from the combustion of hydrocarbon fuels to maintain the required elevated temperature for evaporation and reaction in a reactor, while injecting directly the spent solution via nozzles. Despite a lot of similarities, there are some important differences in space requirement, process control and versatility, energy consumption and above all in the solid by-product. Depending on the application, one of these two processes fits better; the fundamentals for the decision which to choose from a point of process engineering shall be supported with this work.
机译：金属氯化物溶液的热水解，特别是用于回收废酸洗液，是通过两种竞争性工艺技术完成的：喷雾焙烧和流化床制粒。两者都依靠烃类燃料燃烧产生的直接传热来维持反应器中蒸发和反应所需的高温，同时通过喷嘴直接注入废液。尽管有很多相似之处，但在空间需求，过程控制和多功能性，能耗以及特别是固态副产品中，还是存在一些重要差异。根据不同的应用，这两个过程之一更合适。这项工作应支持从过程工程学角度进行选择的决策基础。

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