Example 7-18 Use of the Dust Nomographs

A storage silo for lignite particles (not lumps) is 10 ft diameter by 12 ft tall. What protection is needed to guard against destruction from a dust explosion (deflagration)  

From Table 7-30C, lignite is dust hazard class 1, with = 151 bar-m/sec. 

Note As Pred and Pstat change for a given class of dust, the vent area required will change. Examine charts. 

The explosion characteristics of dusts of the specific type or identification varies with the size and shape of the dust particle [27]. These characterisdcs and a few other features [27] as well as moisture content are summarized in Table 7-31. These data are  

Applied Process Design for Chemical and Petrochemical Plants 

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