Cold end corrosion rate probe

Details Cold end corrosion rate probe Cold end corrosion rate probe

1978-08-31

1980-04-01

Weisstuch, Aaron

Chemistry: electrical and wave energy

Processes and products

204195C, 324 65CR, G01N 2746, G01N 2730

Patent

active

041960572

ABSTRACT:
A cold end corrosion rate measuring probe consisting of a corrosion rate meter probe modified by the addition of a cooling jacket and a temperature measuring device such as a thermocouple. The probe is adapted to be flush mounted in an exhaust line or flue. A coolant, e.g. water, is circulated through the jacket to bring monitored gas to its dew point, at which point, a corrosion rate measurement can be made. The dew point may also be indicated by increased conductivity across two adjacent electrodes of the probe, e.g., the reference and test electrodes. Measurement of corrosion rate and accompanying dew point can be correlated with sulfur trioxide concentration in flue or exhaust gases and hence enables predictability of occurrence and location of "cold end" corrosion, which also indicates inhibitor effectiveness.

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Shields, "Boilers", F. W. Dodge Corp., N.Y., 1961, pp. 271-274 and 293-294.
G. R. Peacock "The Land Dewpoint Meter Uses an Old Principle to Provide New Measurements in Waste & Process Gases" paper presented at Conference of Instrument Society of America, Oct. 1976, pp. 1-10.
G. R. Peacock, "Methods of Measuring Sulfuric Acid Dewpoint," paper presented at 23rd Annual Instrument Society of America Analysis Symposium, May 1977.
Palmer & Beer, "Combustion Technology", Academic Press, N.Y., 1974, pp. 50-59.

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