A pulse-jet bag filtration unit is being proposed to be installed to clean an air stream containing particulate pollutants . Design and operating…

A pulse-jet bag filtration unit is being proposed to be installed to clean an air stream

containing particulate pollutants. Design and operating data as well as the fabric information

are given below.

Volumetric flow rate of the polluted air stream = 10,000 cfm (at 60oF, 1 atm)

Operating temperature = 250oF

Operating pressure = 1 atm

Concentration of pollutants = 4 gr/ft3

Gas-to-cloth ratio (G/C) = 2.5 cfm/ft2 cloth (at operating condition)

(G/C = gas volumetric flow rate per unit area of filter cloth)

Collection efficiency = at least 99%

9. A pulse-jet bag filtration unit is being proposed to be installed to clean an air streamcontaining particulate pollutants . Design and operating data as well as the fabric informationare given below .Volumetric flow rate of the polluted air stream = 10 , 000 cfmm ( at 6OF , 1 atm )Operating temperature = 250’FOperating pressure = 1 atmConcentration of pollutants = 4 or / ft*Gas – to – cloth ratio ( G / C ) = 2.5 ofm/ {t- cloth ( at operating condition )( G / C = gas volumetric flow rate per unit area of filter cloth )Collection efficiency = at least 99 %/0Filter bagABCMaximum temperature ( F )260275220Cost per bag ( $ )263820Standard size of bag8 in* * 16 It10 in * 16 ftI ft x 16 ft( bag diameter X length )Select the most appropriate filter bag fabric by considering both process compatibility andcost . Show your analysis that justifies your choice of filter . How many the selected bags arerequired to meet at least 99% collection efficiency ? How much the selected bags will cost ?

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