Wet Scrubbers 湿式洗涤器
Wet collectors use water“sprays”to collect and remove particulate matter.湿式洗涤器利用水喷雾收集和分离颗粒物。
Here are many variations of wet collectors but they may generally be classified as low of high energy scrubbers. 湿式洗涤器有很多种类，但是它一般分为低能和高能洗涤器。
Low energy scrubbers of 1 to 6 inches of pressure drop may consist of simple spray tower, packed tower or impingement plate tower. 压降在1至6英寸的低能洗涤器可能是简单的喷雾塔，填料塔或撞击板塔组成。
The water requirement may be 3 to 6 gal/1,000ft³ of gas and collection efficiencies can exceed 90 to 95%.水的要求是3至6 gal/1000ft ³的气体，收集效率可以超过90至95 ％。
The lower energy scrubber finds frequent application in incinerators, fertilizer manufacturing, lime kilns. And iron foundries.低能洗涤器在焚化装置，肥料生产，石灰炉和铸铁车间得到广泛的应用。
The high energy scrubber, or Venturi, imparts high velocity to the gas stream by means of converging-diverging duct section, and contact the stream with injected water.高能洗涤器或者文丘里管，用收缩—扩大管截面的方法给气流提供高速，与上面注入的水流接触。
The high velocities provide increased collection efficiency, up to 99.5%, but the pressure drop may range from 10 to 60 inches of water. This requires a draft fan with high power input. 高速供给提高了吸收效率，高达99.5%，但是压力将会达到10~60英寸水柱，这就要求有一个高能输入的引风机。
The Venturi scrubber is often used in conjunction with steel furnaces, pulp mills and foundry cupolas.文丘里洗涤器经常应用于炼钢炉、造纸厂和炼铁炉中。
The wet scrubbers can provide high collection efficiency but may involve treatment of liquid wastes with settling ponds.湿洗涤器可提供高效率，但可能涉及治疗液体废物的沉淀。
They also saturate the gas stream and produce a resultant steam plume. 他们还浸透的天然气流和由此产生蒸汽柱。
The principal mechanisms involved in wet scrubbing are：increasing the size of the particles by combination with liquid droplets thereby increasing their size so they may be collected more easily ，and \or trapping them in liquid film and washing them away.湿洗的主要原理是：越来越多的小粒子的结合成液滴从而增加其大小，以便可以更容易地收集他们，或者用液膜捕获他们和洗去他们。
Electrostatic Precipitators 静电除尘器
Gas cleaning by electrostatic precipitation is particularly suited for gas streams which can be easily ionized and which contain either liquid or solid particulate matter. 静电除尘器的气体清除尤其适合容易带电的气流和包含液体或固体的带电物质。
The method of removal consists of passing the particle-laden gas through an electrostatic field produced by a high voltage electrode and grounded collection surface.去除方法为使载满微粒的气体通过一个高压电极和接地捕集板产生的静电区域。
The gas is ionized by the high voltage discharge and the particulate matter is charge by the interaction of the gas ions.气体被高压电极电离，同时气体离子的相互作使颗粒物带上电荷。
The particle migrate to the collecting surface which has an opposite polarity and neutralized.接着颗粒物移动到与它相反的极性收集板上，然后中和。
The operating principle of electrostatic precipitation thus requires three basic steps :(1)electrical charging of the suspended particulate matter; (2)collection of the charged particulate matter on a grounded surface ;（3）removal of the particulate matter from the collecting surfaces by mechanical or flushing with liquids. 因此静电的操作原理需要三个基本步骤：(1) 悬浮颗粒物的电能交换；(2)带电粒子物质在接地板的收集；(3)通过机械刮除或者用水冲洗收集表面的颗粒物质。
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