Cold-end corrosion experience in the steam turbine power plant

摘要

The Royal Commission for Jubaila nd Yanbu operates and maintains the power, desalination, and seawater cooling complex at Madinat Yanbu Al-Sinaiyah, Saudi Arabia. The complex includes a steam turine power plant consisting of three 130 MW units burning heavy fuel oil and/or ethane gas. The steam power plant has experienced corrosion in the hot-end elements of the air preheater, induced draft fans, expansion joints, and associated ducting downstream of the air preheater. This paper presents a study conducted to: (1) identify corrosion of the fire-side of the boiler component downstream of the economizer, (2) determine the causes of the corrosion, and (3) outline remedial measures adapted for the observed corrosion.