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前言文丘里管湿式(即喷管式)除尘器自1973年在我国火电厂中试验成功以来,由于它具备效率高、体积小、投资省、而且阻力能降低到适应于在锅炉机组上使用的优点,因而在火电厂中获得了推广。截至1977年底,已经有二十八个电厂的五十余台锅炉安装了这种除尘器。几乎所有投入运行的文丘里管湿式除尘器部表明其除尘效率能达到96～97%以上。经过几年实践以后,文丘里管的结构及其设计参数已取得了较成熟的经验。但是对捕滴器(即湿式旋风分离器)的合理结构尚缺乏充分的研究,致使一些文丘里管湿式除尘器投产后还存在不同程度的烟气带水现象。为此,进一步研究捕滴器的合理结构尺寸,对于完善和提高文丘里管湿式除尘器就十分必要的了。
Introduction The venturi wet (ie, nozzle) precipitator has been successfully tested in China’s thermal power plants since 1973 due to its high efficiency, small size, and investment saving, as well as reduced resistance to be used on boiler units Advantages, and thus obtained in the thermal power plant promotion. By the end of 1977, more than 50 boilers from 28 power plants had been installed. Nearly all Venturi Wet Dust Collector sections put into operation show that their dust removal efficiency can reach 96-97%. After several years of practice, the structure of the venturi and its design parameters have gained more mature experience. However, due to the lack of adequate research on the reasonable structure of a drop-catcher (ie, a wet cyclone), some Venturi wet-type dust collectors still have different levels of flue gas water ingress. For this reason, further study of the reasonable structure size of the dropper is very necessary for improving and improving the venturi wet-type precipitator.