The environment inside flue gas outlet ducts on FGD systems is frequently quite corrosive to commonly used austenitic stainless steels. An empirical mathematical model has been developed to estimate corrosion rates of Type 317L stainless steel based on a knowledge of the flue gas condensate composition, pH and temperature. The model was developed from corrosion rate data obtained from a set of corrosion experiments that were conducted in synthetic condensates – formulated from a Box-Behnken experimental design for seven factors. These factors were chloride, fluoride, iron, aluminum, copper, pH and temperature. The corrosion rates calculated from the model can be used to assess remaining life of Type 317L stainless steel outlet ducts, provided the environmental variables are within the ranges specified by the Box-Behnken design.

Subject
Materials, Composition, Fluorides, Corrosion rate, Aluminum, Flue gas desulfurization, Condensates, Weight loss coupons, Flue gas, Acidity, Corrosion modeling, Stainless steel, Chlorides
Keywords:
Type 317L stainless steel, condensate corrosion, FGD system
© 1994 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).
1994
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.