Page 319 - Air Pollution Control Engineering

05_chap_wang.qxd 05/05/2004 3:51 pm Page 298
298 Lawrence K. Wang et al.

Q Actual emission stream flow rate (acfm)
e,a
Q Actual flow rate of dry air (acfm)
e,ad
Q Saturated emission stream flow rate (acfm)
e,s
3
Q Volume of water added (ft /min)
w
r Empirical packing constants (dimensionless)
3
R Gas constant (0.7302 atm-ft /lb-mol°R)
RE Removal efficiency (%)
RE reported removal efficiency (%)
reported
s Empirical packing constant (dimensionless)
Sc Schmidt number for gas stream
G
Sc Schmidt number for liquid stream
L
S Specific gravity of fluid
g
SG Specific gravity of the plastic or other material used to produce the media
media
SG Specific gravity of water (=1)
water
T Temperature of gas (°R)
TAC Total annual cost ($)
TCC Total capital cost ($)
T Temperature of the emission stream at inlet air (°F)
e
T Temperature of the saturation emission stream (°F)
e,s
UEC Unit electricity cost ($/kWh)
USC Unit cost of the solvent ($/gal)
3
V Volume of packing (ft )
packing
VSC Venturi scrubber cost ($)
3
W Weight of media (lb/ft )
media
WR Water consumption (gal/yr)
3
W Weight of water (62.4 lb/ft )
water
Y Empirical packing constant (dimensionless)
µ L Viscosity of scrubbing liquor (cP [1 when using water ])
µ L'' Liquid viscosity (lb/ft-h)
µ Micrometer (1×10 m)
−3
m
REFERENCES
1. R. H. Perry, and, C. H. Chilton (eds.), Chemical Engineer’s Handbook, 6th ed., McGraw-
Hill, New York, 1980.
2. R. E. Treybal, Mass Transfer Operations, 3rd ed., McGraw-Hill, New York, 1980.
3. US EPA, Wet Scrubber System Study, Vol. 1: Scrubber Handbook, EPA-R2-72-118a (NTIS
PB 213016), US Environmental Protection Agency, Washington, DC, 1972.
4. US EPA, Organic Chemical Manufacturing, Vol. 5: Adsorption, Condensation and
Absorption Devices, EPA-450/3-80-027 (NTIS PB 81-220543), US Environmental
Protection Agency, Research Triangle Park, NC, 1980.
5. W. M. Vatavuk, and R. B. Neveril, Chem. Eng. NY, Oct. 4 (1962).
6. A. Kohl, and F. Riesenfield Gas Purification, 2nd ed., Gulf Publishing, Houston, TX, 1974.
7. R. S. Hall, W. M. Vatavuk, and J. Matley, Chem. Eng. NY, Nov. 21 (1988).
8. Michael Sink of Pacific Environmental Services, Inc. to Koch Engineering, Inc. and
Glitsch, Inc., Costs of tower packings, Telecommunications, Research Triangle Park, NC,
Jan., 1990.