March 2015

Special Report: Corrosion Control

Evaluate the reliability of a reformer heater convection tube

The findings and analysis herein confirm that HDSS can extend material performance levels beyond existing SDSS grades, thereby reducing maintenance requirements and unplanned shutdowns for more productive and cost-effective operations.

Yoon, H., Nam, J., Kim, S., SK Innovation Co. Ltd.

Within 30 days of the startup of a catalytic reformer heater, which comprises four radiant cells with one steam-generation convection section, water leakage was detected from a convection tube. A subsequent investigation led to the shutdown of the fired heater and the opening of the convection section, which revealed a leak in a 3-in.-diameter finned tube in the first-pass coil of the convection tube bundle (Fig. 1). Two damaged areas were visually observed, one at the finned tube and another at the U-bend vertical section (Fig. 2).     Fig. 1. Failed tube location and fired heater configuration.     Fig. 2. Punctures on the tube.An elliptica

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