The furnace environment and potential corrosion concerns for low NOx combustion systems are reviewed. Hydrogen sulfide gases can be formed during low NOx combustion, which can cause accelerated attack of tube materials in local regions within the boiler. The severity of attack will depend upon many variables, which include temperature, hydrogen sulfide concentration in the flue gas, fluctuations in the combustion gas environment, and the thermal cycles that a boiler undergoes. Should corrosion put local regions of boiler tubes at risk, alternate materials can be used as a remedial measure. SA213-TP304 and SA213- TP310 stainless steels are shown to provide excellent resistance to even the most severe low NOx combustion environment. These materials can be applied as claddings, or possibly as coatings.

Subject
Sulfur, Composition, Corrosion rate, Tubes, Flue gas, Corrosion scales, Oxide scales, Waterwalls, Gas composition, Boilers, Sulfides, Gases, Alloys
Keywords:
corrosion, metals, reducing gases, energy systems, sulfidation, high temperature
© 1991 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).
1991
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.