Composition for preventing cold end corrosion in boilers

Details Composition for preventing cold end corrosion in boilers Composition for preventing cold end corrosion in boilers

1980-01-21

1981-11-03

Padgett, Benjamin R.

Compositions

Preservative agents

Anti-corrosion

106 1405, 44 5, 252 855E, 422 9, 423242, 423244, C10L 1004, C23F 1102, C23F 1118

Patent

active

042984971

ABSTRACT:
A composition is provided for neutralizing acid corrosive agents in boiler flue gases and like vapors. In large industrial boilers and like systems, flue gases carrying sulfur trioxide contact metal surfaces of heat recovery equipment. Under some circumstances, the sulfur trioxide combines with moisture in the boiler flue gases to produce sulfuric acid. This acid can corrode the surfaces of this equipment. The composition offered here comprises a particulate carrier having a relatively large surface area, and a particulate, active neutralizing agent having a relatively small surface area surface-coated on the carrier. Here, the particulate carrier is bentonite clay and the active neutralizing agent is sodium aluminate.

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patent: 2546586 (1951-03-01), Cross
patent: 2992884 (1961-07-01), Bienstock et al.
patent: 3837820 (1974-09-01), Kukin
patent: 3886261 (1975-05-01), Libutti
patent: 3910854 (1975-10-01), Meyer
patent: 4100258 (1978-07-01), Vossos et al.
patent: 4134727 (1979-01-01), Oschell et al.
patent: 4134728 (1979-01-01), Libutti et al.
patent: 4134729 (1979-01-01), Libutti et al.
patent: 4140750 (1979-02-01), Oschell
Gibson et al., Power Engineering, Apr. 1977, pp. 70-73.
Shields, "Boilers", Dodge, pp. 270-294.
Fryling "Combustion Engineering", Combustion Engineering Inc., 1966, 19-19-19-23.
Woodruff et al., "Steam Plant Operation," McGraw-Hill, pp. 24-31.

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