Thermoplastic and thermoplastic lined RTP equipment (Dual Laminates) have been used for years in the Chemical Process Industry. Compiled in this paper are several of those applications that have been successful and those that have not. Reasons for either success or failure are given and how to avoid problems in the future is discussed.
Sulfuric acid is one of the most important elementary substances of the chemical industry. There is no stainless steel or even a nickel base alloy available which is suitable over the entire concentration range. This paper will give corrosion data in up to 75 % sulfuric acid at boiling temperature for various commercial grades as well as for some new developmental alloys.