Engineer,Design, Construct,Test,and Evaluate a Pressurized Fluidized Bed Pilot Plant Using High Sulfur Coal for Production of Electric Power,Phase I. Preliminary Engineering. Technology Support Test Report:Metallurgical Evaluation of Heat Exchanger Tubes Tested in the Dorr--Oliver 12''Diameter Atmospheric Fluosolids Reactor.

摘要

Metallographic examination of heat exchanger tubes and fins which have been subjected to comparatively short time exposure in the Dorr--Oliver reactor environment indicates the following: (a) there has been no significant deterioration of fins or tubes fabricated from Incology 800H material; (b) the cobalt base braze alloy used to join the fins to the tubes showed no apparent attack. Micro-probe analysis revealed shallow internal attack on the fins,primarily oxidation,to a depth of approximately .002''to .004''. A slight sulfur penetration was noted to a depth of about .002''. (ERA citation 04:046346)