Interest in operating cooling water systems under highly alkaline conditions continues to gain momentum due to the advantages of acid feed elimination or minimization. Organic corrosion inhibiting systems have found a niche in alkaline treatment schemes where the use of heavy metals is prohibited or inorganic phosphate based inhibitors are not suited to specific system parameters and/or water chemistry. The merits of a specific organic inhibiting system are presented. Related ancillary concerns associated with operating under alkaline conditions and their resolution are discussed. Results of dynamic pilot cooling system studies under high pH alkalinity conditions are reviewed, demonstrating the complementary relationships of various chemical building blocks comprising the total organic system. The discussion culminates with a review of the key operating parameters and results from several industrial field applications over the past two years.

Subject
Water, Copolymers, Phosphonates, Scale inhibitors, Iron, Calcium, Tolerances, Dispersion, Acidity, Polymers, Corrosion inhibitors, Corrosion protection, Deposit corrosion
© 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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