Boiler corrosion may be due to oxygen attack. Industrial boiler plants are usually equipped with deaerators or open heaters for the removal of oxygen in the feedwater. By mechanical means, however, a detectable residual dissolved oxygen in the feedwater is almost always present that can cause pitting. Oxygen may also be accidentally introduced into the boiler system.

Most boiler water treatment programs include the use of oxygen corrosion inhibitors or oxygen scavengers. Hydrazine and sodium sulfite are popularly used as oxygen scavengers for steam generating plants. The present paper describes several chemicals for removal of dissolved oxygen in the boiler water. Methods will be presented to compare the efficiency of new oxygen scavengers with those of sodium sulfite and hydrazine at relatively low temperature in the laboratory and under boiler water conditions.

Subject
Water, Sodium nitrite, Hydrazine, Condensates, Oxygen scavengers, Sulfites, Acidity, Feedwater, Sodium, Boilers, Oxygen, Dissolved oxygen, Chemical reactions
© 1981 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).
1981
Association for Materials Protection and Performance (AMPP)
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