Metal dusting is a common design and operating constraint on high-temperature hydrocarbon processing. This study reports the results of laboratory investigations in pressurized high-temperature carbon-rich environments simulating operations in syngas production and root cause failure analysis and laboratory analysis simulations in refinery platformer operations. The results rank a variety of stainless steels, Ni-Fe-Cr alloys UNS N08800, N06601, N06025, N06690 and N06693 with respect to metal dusting resistance. Some fundamental aspects of metal dusting are discussed based on diffusion calculations, metallography, electron microscopy, energy-dispersive x-ray and electron back-scattering diffraction studies.

Subject
Pits, Materials, Pit propagation, Metal surfaces, Diffusion, Nickel based alloys, Tubes, Autoclaves, Syngas, Metal dusting, Carbon, Stainless steel, Alloys
Keywords:
high temperature corrosion, metal dusting, nickel alloys, syngas, platformer, inhibitors
© 2009 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2009
Association for Materials Protection and Performance (AMPP)
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