Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1983-07-25
1985-01-29
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
55 73, 110343, 110345, C01B 1700
Patent
active
044965257
ABSTRACT:
A method of improving the efficiency of large industrial boilers of the type using heat exchangers heated by superheated steam diverted from the steam used to produce energy, which heat exchangers elevate the temperature of the air heater section of such boilers to minimize corrosion caused by the condensation of SO.sub.3 to produce sulfuric acid which comprises reducing the temperature of the air heater by throttling the steam fed the heat exchanger while, at the same time, using an amount of sulfuric acid neutralizing chemical in the air heater section of such boilers to neutralize any increase in the sulfuric acid formed.
REFERENCES:
patent: 4100258 (1978-07-01), Vossos et al.
patent: 4298497 (1981-11-01), Columbo
patent: 4444128 (1984-04-01), Monro
Bienstock, D. et al., "Process Development in Removing Sulfur Dioxide from Hot Flue Gases," Bureau of Mines Report of Investigations 5735, U.S. Dept. of the Interior, 1961.
Epple Donald G.
Heller Gregory A.
Miller Robert A.
Nalco Chemical Company
Premo John G.
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