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51318-11372-Selection of Superheater Materials for Biomass-fired Boilers

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This work presents the results of a field-based study designed to evaluate the corrosion performance of five alloys exposed in a Canadian biomass-fired boiler attached to a gasifier for 3,552 hours.

Product Number: 51318-11372-SG
Author: V. Padilla
Publication Date: 2018
Industry: Corrosion Monitoring and Control
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This work presents the results of a field-based study designed to evaluate the corrosion performance of five alloys exposed in a Canadian biomass-fired boiler attached to a gasifier for 3,552 h. The corrosion performance of the candidate alloys can be ranked as follows: N08028 > S34709 > S21500 > S31009 > K21590. With the exception of S31009, the results showed a good correlation between the amount of chromium in the alloys and their resistance to high temperature corrosion. The low levels of chlorides, the flue gas composition, and the evidence gathered by SEM analysis suggest that oxidation was the primary attack mechanism.

 

Key words: high temperature corrosion, super heaters, biomass, boiler, gasification

This work presents the results of a field-based study designed to evaluate the corrosion performance of five alloys exposed in a Canadian biomass-fired boiler attached to a gasifier for 3,552 h. The corrosion performance of the candidate alloys can be ranked as follows: N08028 > S34709 > S21500 > S31009 > K21590. With the exception of S31009, the results showed a good correlation between the amount of chromium in the alloys and their resistance to high temperature corrosion. The low levels of chlorides, the flue gas composition, and the evidence gathered by SEM analysis suggest that oxidation was the primary attack mechanism.

 

Key words: high temperature corrosion, super heaters, biomass, boiler, gasification

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51318-11344-Remaining Life Estimation of Alloy 800H Tube Material

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Damage example cases of pigtails under high temperature and pressure. Also: the technique for the remaining life assessment of pigtails - based on the relation between OD change and life consumption.
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51318-11370-Electrochemical Measurements of Steel Corrosion for Modeling H2 Generation

Product Number: 51318-11370-SG
Author: V.K. Gattu / W.L. Ebert / N. Tehrani / J.E. Indacochea
Publication Date: 2018
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We are using electrochemical methods to measure the corrosion rates of low alloy steels, stainless steels, and Zircaloy-4 that can be used to represent H2 generation rates under the range of Eh-pH conditions that could occur in a disposal system.
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