October 2005

Corrosion/Vessels

Effect of process deposits on the corrosion behavior of titanium in brine

The temperature and pH need to be controlled to avoid problems

Babakr, A., SABIC R&T; Al Beed, A. A., Saudi Petrochemical Company; Al-Sonidah, M., Al-Subai, S., Saudi Basic Industries Corp.

Titanium alloy Ti-0.3Mo-0.8Ni (Gr-12) is used as the preferred material for anolyte vessels of brine solution due to its superb corrosion resistance. A vessel suffered severe localized attack (bottom of vessel), resulting in leakage in less than three years from the date of installation. The vessel bottom thickness was 4.76 mm and had undergone severe localized corrosion under the prescribed process pH and temperature. Samples were collected and analyzed. Large pits were revealed by optical microscopy. The deposits were analyzed by X-ray fluorescence (XRF). It was found that the main cause of failure was settled deposits, which led to under-deposit corrosion in high-temperature conditions.

Log in to view this article.

Not Yet A Subscriber? Here are Your Options.

1) Start a FREE TRIAL SUBSCRIPTION and gain access to all articles in the current issue of Hydrocarbon Processing magazine.

2) SUBSCRIBE to Hydrocarbon Processing magazine in print or digital format and gain ACCESS to the current issue as well as to 3 articles from the HP archives per month. $409 for an annual subscription*.

3) Start a FULL ACCESS PLAN SUBSCRIPTION and regain ACCESS to this article, the current issue, all past issues in the HP Archive, the HP Process Handbooks, HP Market Data, and more. $1,995 for an annual subscription.  For information about group rates or multi-year terms, contact email Peter Ramsay or call +44 20 3409 2240*.

*Access will be granted the next business day.

Related Articles

From the Archive

Comments

Comments

{{ error }}
{{ comment.comment.Name }} • {{ comment.timeAgo }}
{{ comment.comment.Text }}