FORMATION OF ALKALI IRON SULFATES AND OTHER COMPOUNDS CAUSING CORROSION IN BOILERS AND GAS TURBINES

Abstract

Completion of the work with S35 as a tracer of reactions on surfaces has confirmed that SO3 is hundreds of times more reactive than SO2. Variations in O2 level and in temperature have only a minor effect on this reactivity ratio. Investigation of the formation of SO3 beneath simulated deposits has shown that little SO3 remains in the gas phase beneath mixtures of alkali sulfates and iron oxides when the complex trisulfates are being formed. Using the index-of-refraction technique, traces of trisulfates can be detected after as little as five hours' exposure to flue gas at 1100 F. Broad recommendations are made here to the Committee for a future study of practical means of preventing deposits.

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Document Details

Document Type
Technical Report
Publication Date
Jul 08, 1968
Accession Number
AD0834964

Entities

People

  • H. H. Krause
  • P. D. Miller
  • R. E. Barrett
  • William T. Reid

Organizations

  • Battelle Memorial Institute

Tags

DTIC Thesaurus Topics

  • Chemical Reactions
  • Chemical Synthesis
  • Chemistry
  • Combustion
  • Crystal Structure
  • Engineering
  • Flue Gases
  • Fly Ash
  • High Temperature
  • Materials
  • Materials Science
  • Measurement
  • Mechanical Engineering
  • Refraction
  • Refractive Index
  • Sulfur Compounds
  • Vanadium Compounds

Readers

  • Materials Science and Engineering.
  • Organic Chemistry
  • Wave Propagation and Nonlinear Chaotic Dynamics.