The Electrical Precipitation of Suspended Particles.
The Electrical Precipitation of Suspended Particles.
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DOI：
10.1021/ie50032a003
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发表时间：
1911-08
影响因子：
6.1
通讯作者：
F. G. Cottrell
中科院分区：
文献类型：
--
作者：
F. G. Cottrell
用放电的方法除去气体中的悬浮颗粒并不是一个新的想法。我们发现，早在1824年，霍尔-赫歇尔就曾建议将其作为抑制普通烟雾的一种手段，25年后的世纪，吉塔德又提出了这一建议。这些建议似乎并没有促进对这个问题的任何实际研究，很快就被完全遗忘了，直到奥利弗·洛奇爵士在1886年11月3日在化学工业协会利物浦分会的一次演讲中，独立地重新发现了同样的现象，并引起了公众的注意，许多年之后，他才重新发现了这些现象。第一次有记录的将这些原则应用于商业的尝试似乎是在迪班克铅厂进行的。电沉淀悬浮物的一般原理当时已由阿尔弗雷德·奥.步行者在上述几个国家的公司，5但这些专利早已过期。该装置是由工厂经理W. M.哈钦斯，与洛奇教授的合作，并简要描述了前6在其完成之前，作为一个系统的金属点位于烟道中的铅炉和激发两个Wimshurst影响机与玻璃板5英尺。每台机器都由一马力的蒸汽机驱动。毫无疑问，该机构在实践中没有达到预期，因为我们在文献中找不到更多的信息。该项目最明显的弱点可能在于对Wimshurst机器的依赖，这台机器当时刚刚问世，人们对它的预期比经验所证明的要多得多，至少就商业应用而言。
The removal of suspended particles, from gases, by the aid of electric discharges is by no means a new idea. As early as 1824 we find it suggested by Hohl-feld1 as a means of suppressing ordinary smoke, and again a quarter of a century later by Guitard.* These suggestions, which do not seem to have stimulated any practical study of the question, were soon entirely forgotten and only brought to light again by Sir Oliver Lodgesmany years after he himself had in-dependently rediscoveredthe same phenomena and brought them to public attention* in a lecture before the Liverpool Section of the Society of Chemical Industry Nov. 3, 1886. The first recorded attempt to apply these principles commercially appears to have been made at the Dee Bank Lead Works. The general principle of electrical precipitation of suspended matter was at this time patentedby Alfred O. Walker of the above firm in several countries, 5 but these patents have long since expired. The apparatus was installed in 1885 by the works manager, W. M. Hutchings, with the cooperation of Prof. Lodge and briefly de-scribed by the former6 just before its completion as consisting of a system of metallic points situated in the flue from the lead furnaces and excited from two Wimshurst influence machines with glass plates 5 ft. in diameter, each machine being driven by a one-horse power steam engine. The apparatusundoubtedly did not· in practice fulfil expectations as we find nothing further of it in the literature. The most apparent weakness of the project lay perhaps in the reliance on the Wimshurst machine, which had then just been brought out and from which a great deal more was anticipated7 than has been justified by experience, at least as far as commercial applications are concerned.