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CORROSION RESISTANCE OF HASTEllOY®AllOYS - Haynes ...

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Type<br />

316<br />

Concen- Temperature HASTEllOY8 alloy Staintration.<br />

less<br />

Corrosive Media percent deg. F deg. C 8/8-2 C/C-276 G/G-3 Steel Conditions<br />

Scrubbing liquors - 176 80 - E - E power plant flue gas scrubbing liquor. Recycled and makeup 190 gil<br />

Sulfur Dioxide citric acid, 80 gil Na2COJ, pH 4-5<br />

Scrubbing liquors - 176 80 - E - E power plant flue gas scrubbing liquor. H2S sparged into citric acid,<br />

Sulfur Dioxide sodium carbonate plus absorbed S02 solution to ppt sulfur. pH 4_5<br />

Scrubbing liquors - 190 88 - E - E boiler flue gas, 0-400 ppm S02, 10% water vapor, fly ash after limestone<br />

Sulfur Dioxide<br />

slurry scrubbing, moderate aeration<br />

Scrubbing liquors - 200 93 - E - E power plant flue gas scrubbing. Decanted scrubbing liquor after removal<br />

Sulfur Dioxide<br />

of sulfur and during removal of Na2S04 by·product by XTALZN.<br />

, .•.<br />

Scrubbing liquors - 235 113 - E - E power plant flue gas scrubbing. Molten sulfur phase<br />

Sulfur Dioxide<br />

Scrubbing liquors - 235 113 - E - E power plant flue gas scrubbing. Sulfur slurry phase of sulfur decanter<br />

Sulfur Dioxide<br />

containing 30-50% solids<br />

Scrubbing liquors - 235 113 - E - E power plant flue gas scrubbing. Citrate solution phase of sulfur decanter.<br />

Sulfur Dioxide<br />

(Dilute and impure sodium citrate)<br />

Scrubbing liquors - 370 188 - E - - flue gas from a metallurgical roaster, typical .02 grains/cu. ft. dust, S02<br />

Sulfur Dioxide<br />

1500 ppm, SOJ 750 ppm, CO2 .7% H20 1-3%, bal. air<br />

Scrubbed Power Plant - 115-125 46-52 - E E E containing droplets of dbl. alkali scrubbing liquor, aeration<br />

F1uegas<br />

Scrubbed Power Plant - 120 49 - E E E aeration<br />

Fluegas<br />

Scrubbed Power Plant - 122 50 - E - G containing 300-500 ppm S02 and 15% H20. Joy Hi liquid energy lime·<br />

Fluegas<br />

stone scrubbing process for S02 and fly ash removal<br />

Aeration - extensive<br />

Agitation - gas and .Iiquid flow<br />

Total days - 100<br />

Scrubbed Power Plant - 135·145 57-63 - E E E dbl. alkali process, aeration<br />

Fluegas<br />

Scrubbed Power Plant - 160-165 71-74 - - E E saturated with H20 and S02, aeration<br />

Fluegas<br />

Scrubbing Power Plant - 176 80 - E E E vapor phase of 190 gil citric acid, 80 gil Na2COJ, solution for absorption<br />

Fluegas of S02' pH 4-5<br />

Aeration - moderate<br />

Agitation - by gas flow<br />

Total days - 91<br />

Scrubbing Power Plant - 176 80 - E E E S02 being absorbed into solution of 190 gil citric acid, 80 gil Na2COJ' pH<br />

Fluegas<br />

4.0-5.0, moderate aeration<br />

Scrubbing Power Plant - 200 93 - E E E decanted scrubbing liquor after removal of sulfur and during removal of<br />

Fluegas<br />

Na2S04 by-product by XTALZN. Citrate process for sulfur dioxide removal<br />

(and sulfur recovery), 91 days<br />

Scrubbing Power Plant - 235 113 - E E E citrate solution phase of sulfur decanter, (dilute and impure sodium cit·<br />

Fluegas rate). Citrate process for sulfur dioxide removal (and sulfur recovery). 91<br />

days<br />

Scrubbing Power Plant - 235 113 - E E E molten sulfur phase. Citrate process for sulfur dioxide removal (and<br />

Fluegas<br />

sulfur recovery), 91 days<br />

Scrubbing Power Plant - 235 113 - E E E sulfur slurry phase of sulfur decanter containing 30-50% solids. Citrate<br />

Fluegas<br />

process for sulfur dioxide removal (and sulfur recovery). 91 days<br />

Scrubbed Recovery - 165 74 - E - E N2,° 2 , water vapor, CO2, traces of CO, H2S. S02, methyl mercaptan plus<br />

Boiler, Fluegas<br />

slight liquor carryover. Scrubbing of recovery boiler flue gas firing kraft<br />

process black liquor<br />

Aeration - extensive<br />

Agitation - 10-12 fUsec.<br />

Total days - 67<br />

Scrubber Fluegas, - 240 116 U E E E Aeration - extensive<br />

Incineration of Agitation - by gas flow<br />

Sewage Sludge Total days - 65.9<br />

Scrubber liquor for - 165 74 - E - E 20.5 gil Na2COJ, 21.5 gil NaHCOJ, 3.1 gil chloride solids, 15% traces<br />

Recovery Boiler Fluegas<br />

Na2S20J' Scrubbing of recovery boiler flue gas firing kraft process black<br />

liquor<br />

Aeration - extensive<br />

Agitation - moderate·violent<br />

Total days - 67.0<br />

-<br />

E - Less than 2 mpy (0.05 mm/y)<br />

G- 2 mpy (0.05 mmly) to 10 mpy (0.25 mm/y)<br />

S - Over 10 mpy (0.25 mmly) to 20 mpy (0.51 mm/y)<br />

B - Over 20 mpy (0.51 mm/y) to 50 mpy (1.27 mmly)<br />

U- More than 50 mpy (1.27 mmly)<br />

44

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