Lesson 5 Fabric Filter Design Review
Lesson 5 Fabric Filter Design Review
Lesson 5 Fabric Filter Design Review
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<strong>Fabric</strong> <strong>Filter</strong> <strong>Design</strong> <strong>Review</strong><br />
Table 5-2. Typical A/C ratios for fabric filters used for control of<br />
particulate emissions from industrial boilers.<br />
Size of boiler<br />
(10 3 lb steam per hour)<br />
Temperature (°F)<br />
Air-to-cloth ratio<br />
[(ft 3 /min)/ft 2 ]<br />
Cleaning<br />
mechanism<br />
260 (3 boilers) 400° 4.4:1 On- or off-line<br />
pulse-jet or<br />
reverse-air<br />
170 (5 boilers) 500° 4.5:1 Reverse-air<br />
with pulse-jet<br />
assist<br />
<strong>Fabric</strong><br />
material<br />
Glass with 10%<br />
Teflon coating<br />
(24 oz/yd 2 )<br />
Glass with 10%<br />
Teflon coating<br />
140 (2 boilers) 360° 2:1 Reverse-air No. 0004<br />
Fiberglas with<br />
siliconegraphite<br />
Teflon<br />
finish<br />
250 338° 2.3:1 Shake and<br />
deflate<br />
200 (3 boilers) 300° 3.6:1 Shake and<br />
deflate<br />
400 (2 boilers) Stoker, 285° to<br />
300°; pulverized<br />
coal, 350°<br />
Woven<br />
Fiberglas with<br />
silicone<br />
graphite finish<br />
Woven<br />
Fiberglas with<br />
siliconegraphite<br />
finish<br />
2.5:1 Reverse-air Glass with<br />
Teflon finish<br />
75 150° 2.8:1 Reverse-air Fiberglas with<br />
Teflon coating<br />
50 350° 3:1 On-line pulsejet<br />
270 (2 boilers) 330° 3.7:1 On-line pulsejet<br />
450 (4 boilers) 330° 3.7:1 On-line pulsejet<br />
380 NA 2:1 Reverse-air<br />
vibrator<br />
assist<br />
645 NA 2:1 Reverse-air<br />
vibrator<br />
assist<br />
1440 (3 boilers) 360° 3.4:1 Shake and<br />
deflate<br />
Source: EPA 1979.<br />
Glass with<br />
Teflon finish<br />
Teflon felt<br />
(23 oz)<br />
Teflon felt<br />
(23 oz)<br />
Glass with 10%<br />
Teflon coating<br />
Glass with 10%<br />
Teflon coating<br />
Woven<br />
Fiberglas with<br />
siliconegraphite<br />
finish<br />
2.0-3/95 5-7
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