Aggressive environments and their implications for catalytic converters of marine diesels

Abstract

Object and purpose of research. This paper discusses porous permeable catalysts used in converters of marine engines. The purpose of this study was to investigate the effect of aggressive environments upon catalytic properties and parameters of the materials used for catalytic conversion. Subject matter and methods. The paper suggests a procedure for experimental studies intended to investigate the effects of aggressive environments in marine diesels contributing to gas-thermal corrosion. It also presents a test rig for investigation of hot gas flow effects upon corrosion properties of porous permeable catalytic materials. Main results. The study yielded the data on gas-thermal corrosion effects upon properties and parameters of porous permeable catalysts used in exhaust gas converters of marine power plants. Conclusion. The results of the study make it possible to estimate the extent of aggressive environment effects of exhaust gas conversion system upon the properties of its catalysts, as well as to adjust the chemistry of catalytic material in accordance with the requirements to conversion quality of exhaust gases.