High temperature corrosion tests were performed in a fluidized bed of black Kraft liquor using a pulsed burner process to determine the optimum materials for use in a commercial application. The materials tested included three different austenitic stainless steels. Type 446 martensitic stainless steel, a high temperature carbon steel, 153MA, and four nickel base alloys. All materials performed well with no corrosion attributed to the environment created by the decomposition of a black Kraft liquor. This behavior was contrary to what was expected due to the high concentration of H2S present in the high temperature, 562°C, atmosphere.

Subject
Materials, Piping, Stainless alloys, Reactors, Nickel based alloys, Liquor, Tubes, Solids, Carbon monoxide, Black liquors, Fluidized beds, Stainless steel, Steam
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1997
Association for Materials Protection and Performance (AMPP)
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