Pulp and paper mill boiler feedwater needs to be of high purity to maintain safe, reliable boiler operation. When feedwater contamination occurs, it may cause either high or low boiler water pH excursions, steam contamination, or insulating deposits. Common boiler feedwater contaminants are silica, black liquor, hardness, and iron. For each of these contaminants, this paper discusses sources of contamination, potential problems caused by each particular contaminant, and recommended actions to be taken when contamination occurs.

Subject
Water, Contamination, Tubes, Iron, Silica, Contaminants, Acidity, Feedwater, Metals, Boilers, Deposit corrosion, Steam, Hardness
© 2001 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).
2001
Association for Materials Protection and Performance (AMPP)
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