Silica is present in all cooling water systems; however, its concentration can vary substantially. Soluble silica can be present in an open recirculating system from less than 10 mg/L to in excess of 200 mg/L. The main concerns addressed by the water treatment industry have been in two general areas. These are the addition of soluble silica to cooling water systems as a corrosion inhibitor, and the prevention of soluble and insoluble silica fouling on heat transfer surfaces. However, a definitive report has not been made concerning the effect of naturally-occurring soluble silica on specific corrosion inhibitor treatments.

This paper reports the results of a study of the effect of soluble silica on three basic cooling water programs. A number of field cases which closely resemble the laboratory matrix are used to correlate with the lab data.

Subject
Cathodes, Water, Corrosion rate, Silicates, Solubility, Refineries, Dispersants, Silica, Corrosion inhibitors, Steel, Corrosion protection, Zinc, Anodes
© 1986 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).
1986
Association for Materials Protection and Performance (AMPP)
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