fundamentals of engineering supplied-reference handbook - Ventech!

Baghouse
Air-to-Cloth Ratio for Baghouses
Shaker/Woven
Reverse
Air/Woven
Pulse
Jet/Felt
Dust [m 3 /(min • m 2 )] [m 3 /(min • m 2 )]
alumina 0.8 2.4
asbestos 0.9 3.0
bauxite 0.8 2.4
carbon black 0.5 1.5
coal 0.8 2.4
cocoa 0.8 3.7
clay 0.8 2.7
cement 0.6 2.4
cosmetics 0.5 3.0
enamel frit 0.8 2.7
feeds, grain 1.1 4.3
feldspar 0.7 2.7
fertilizer 0.9 2.4
flour 0.9 3.7
fly ash 0.8 1.5
graphite 0.6 1.5
gypsum 0.6 3.0
iron ore 0.9 3.4
iron oxide 0.8 2.1
iron sulfate 0.6 1.8
lead oxide 0.6 1.8
leather dust 1.1 3.7
lime 0.8 3.0
limestone 0.8 2.4
mica 0.8 2.7
paint pigments 0.8 2.1
paper 1.1 3.0
plastics 0.8 2.1
quartz 0.9 2.7
rock dust 0.9 2.7
sand 0.8 3.0
sawdust (wood) 1.1 3.7
silica 0.8 2.1
slate 1.1 3.7
soap detergents 0.6 1.5
spices 0.8 3.0
starch 0.9 2.4
sugar 0.6 2.1
talc 0.8 3.0
tobacco 1.1 4.0
zinc oxide 0.6 1.5
U.S. EPA OAQPS Control Cost Manual, 4th ed., EPA 450/3-90-006 (NTIS PB 90-169954), January 1990.
147
Electrostatic Precipitator Efficiency
Deutsch-Anderson equation:
η = 1 – e (–WA/Q) , where
η = fractional collection efficiency,
W = terminal drift velocity,
A = total collection area, and
Q = volumetric gas flow rate.
ENVIRONMENTAL ENGINEERING (continued)
Note that any consistent set of units can be used for W,
A, and Q (for example, ft/min, ft 2 , and ft 3 /min).
Incineration
W −W
DRE =
W
in out ×
in
100% , where
DRE = destruction and removal efficiency (%),
Win = mass feed rate of a particular POHC
(kg/h or lb/h), and
Wout = mass emission rate of the same POHC
(kg/h or lb/h).
CO 2
CE = × 100% , where
CO + CO
2
CO2 = volume concentration (dry) of CO2
(parts per million, volume, ppmv),
CO = volume concentration (dry) of CO (ppmv),
CE = combustion efficiency, and
POHC = principal organic hazardous contaminant.