Gas Cleaning in Industries with Particular Reference to Electrostatic Precipitators

摘要

In this paper the author intends to describe briefly the four major techniques of Solid Gas Separation which have found wide application in industries. These are: (1) Dedusting of gas by means of filtration media, (2) Removing flue dust by centrifugal collectors, (3) Dedusting of gas in Washers and Scrubbers, and (4) Dust and Mist removal by Electrostatic separation. Out of the above four techniques, the last technique will be discussed in greater detail. The characteristics of the different dust separation equipment following these techniques differ widely in their collection efficiencies as well as investment, operating and maintenance cost. Although, each of these techniques has proved its suitability for certain applications, yet none is equally suitable for every dedusting duty. The different methods do, however, complement each other in a manner that an optimum solution for every industrial dedusting problem can be proposed.