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Tracer Studies in Boiler Scale and Corrosion Control


Boilers are one of the most fundamental systems in refineries or processing plants. It is very critical to assess and control the conditions of boilers to avoid the operation failure. Scale and corrosions are major problems in the boiler. Boiler chemical treatment has been considered to be a cost-effective approach to prevent deposition formation and minimize corrosion in boilers to control feeding chemicals, tracers are used for monitoring chemical dosage levels. The usage of fluorescent tracers for dosage control and system diagnostics is a recognized approach for decreasing operator workload and improving system performance.

Product Number: 51323-19005-SG
Author: Haiping Lu, Swamy Margan, Dean Diagostine
Publication Date: 2023
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In industrial boiler operation, it is very critical to control boiler conditions to avoid the failure. Boiler chemical treatment is considered as a cost-effective approach to prevent scale formation and minimize corrosion to control feeding chemicals, tracers can be formulated into scale and corrosion inhibitor for the dosage monitoring.
This paper presents both laboratory and operation studies of fluorescein in a scale and corrosion inhibitor. The studies include: 1. Evaluation of fluorescein stability at 400°F; 2. Assessment of fluorescein monitoring accuracy compared with other analysis method in boiler operation system; 3. Investigation of the effects of fluorescein on other element analysis, mainly molybdate and iron, by wet chemistry methods. Based on the testing results, fluorescein are stable and can be accurately measured at least up to 600 psi boiler conditions. The present of fluorescein has negligible effects on both molybdate analysis and iron analysis by wet chemistry method at the common treatment dosage range (< 600 ppb of fluorescein).

In industrial boiler operation, it is very critical to control boiler conditions to avoid the failure. Boiler chemical treatment is considered as a cost-effective approach to prevent scale formation and minimize corrosion to control feeding chemicals, tracers can be formulated into scale and corrosion inhibitor for the dosage monitoring.
This paper presents both laboratory and operation studies of fluorescein in a scale and corrosion inhibitor. The studies include: 1. Evaluation of fluorescein stability at 400°F; 2. Assessment of fluorescein monitoring accuracy compared with other analysis method in boiler operation system; 3. Investigation of the effects of fluorescein on other element analysis, mainly molybdate and iron, by wet chemistry methods. Based on the testing results, fluorescein are stable and can be accurately measured at least up to 600 psi boiler conditions. The present of fluorescein has negligible effects on both molybdate analysis and iron analysis by wet chemistry method at the common treatment dosage range (< 600 ppb of fluorescein).

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