Question

4. Determine the number of filter bags required for an 8-compartment baghouse that uses pulse-jetting as the method to remove particulate matter from the bags. The process gas exhaust rate is 100,000 ft/min and the recommended air-to-cloth ratio is 4 ft/min. The bags specified by the manufacturer have a diameter of 6 inches and height of 10 ft. (a) what is the total required fabric area? (ft)? (b) What number of bags is required? (c) How many bags are in each compartment? (d) what other particulate removal technologies are available and discuss their selection process [10 pts]

Answer 1

fabric area a rate al air to cloth Given, Procen gas exhaust rate : 100,000 ft/min air to cloth ratio e 4 ft/min 2 bin a 0.5 ft diameter of Bcg ² height Z 1o.ft ratio (a) Total req 2 100,000 * 2 25000 ft2 Z fabric area area of. eech bag (6) No. of bags required 2 25,ODD (0.5) (10) 1592.36 1592 bags. in each compartment 1592 199 bags. (C) Bags 2 (: 8- compartment bag house) (D) 1). Electrostatic Precipitators. L'ESP's) used when particulate size ranges 0.01 - >100 um Wet particulate scrubbers. Particulate size range 0.5 -> 100 um. from i ) is

High temperature High Pressure (HTHP) (ii) Mechanical / inertial collectors Used when particle size ranges from particulate control 1.0 -100 um ( iv )

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