Abstract
Potential materials for superheater tubes used in black liquor recovery systems in the pulp and paper industry were tested in the laboratory for their resistance to the expected ash corrosion under advanced steam conditions. Ash corrosion due to the existence of synthetic-ash was observed for all the materials tested but the degree of ash corrosion depended on the test temperature and the contents of alloying elements such as Cr and Ni. For the steam temperarure of 773 K (500 C), which is a short-range objective operating condition, ferritic stainless steels, for example AISI type 410 steel, were shown to be the possible materials for superheater tubes used in black liquor recovery systems.
© 1987 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).
1987
Association for Materials Protection and Performance (AMPP)
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