Question 2 (15 Marks) A cascading impactor like that shown in was used to characterize the dirty particle-laden gas from

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Question 2 15 Marks A Cascading Impactor Like That Shown In Was Used To Characterize The Dirty Particle Laden Gas From 1 (35.95 KiB) Viewed 46 times

Question 2 (15 Marks) A cascading impactor like that shown in was used to characterize the dirty particle-laden gas from a blast furnace prior to entry into an electrostatic precipitator. The table below illustrates the cumulative mass fraction of the particles within the dirty gas. Use this data to determine the median particle size of the particles entering the ESP. Stage Initial Final Net Mass d50 Size Range of Collected Number Mass Mass Mass Fraction (μm) Cumulativ e Mass Fraction (%) (mg) (mg) (%) Particles (mg) (μm) 1 850.5 850.6 0.1 9.0 > 9.0 2 842.3 844.1 1.8 4.0 4.0-9.0 3 855.8 861.0 5.2 2.2 2.2-4.0 4 847.4 853.6 6.2 1.2 1.2 - 2.2 5 852.6 855.1 2.5 0.70 0.70-1.2 78.7 79.3 0.6 0 0-0.70 Downstrea m Filter 16.4 0.6 11.0 31.7 37.8 15.2 3.7 100 %