Several experiences with the use of titanium heat exchangers in refining processes are summarized. These involve distillation column overhead condensers in atmospheric crude distilling units, fluid catalytic cracking units, delayed coking units, and sour water strippers. The causes of problems are discussed. Needs for additional data are highlighted.
UNS N04400 cladding on steel valves can corrode during marine service. The uniform corrosion rate of an EN coating in artificial seawater was measured by electrochemical impedance spectroscopy and was found to be less than that for N04400. The main conclusion is that an EN coating could be a viable solution to repair N04400-clad valves in-situ.
The primary application for coatings made with Fluoroethylene vinyl ether (FEVE) resins has been in architectural markets. This paper will discuss the chemistry and physical characteristics of FEVE resins, including data on weatherability. A brief review of FEVE resin product types will be given. Both laboratory and offshore corrosion test results will be addressed.
This paper will review the features and benefits of a new epoxy coating technology that allows for true epoxy-amine curing in a single-pack product. Performance versus traditional two-component epoxy products will be compared, and environmental and convenience benefits of single-pack versus two-component packaging will be discussed.