A new process for the evaluation of the particle size distribution in the case of dust contained in flowing gases

The effectiveness of dust precipitation devices depends to a large degree on the dust particle size distribution. A knowledge of the dust particle size characteristics is, therefore, vital for the planning and the design of dust precipitation processes. The drawbacks of currently used methods for the determination of the dust particle size distribution are considered, taking into account also a procedure reported by Feifel (1950). A description is given of a procedure which is partly related to Feifel's method. The approaches used to avoid the difficulties of the current methods are discussed. Practical applications of the new procedure are also considered, giving attention to lime dust, iron oxide dust, and dust consisting of salt-acid particles.