A unique system of corrosion resistant materials has shown excellent performance and durability in flue gas systems for fossil plants, cogeneration plants, waste incinerators and waste-to-energy plants. The system consists of a combination of organic and ceramic based lining materials offering excellent resistance to chemical attack, physical abuse and thermal demands. Case histories are presented, with descriptions of the operating environments, materials selection criteria and operating experiences.

The newer generation organic materials combine excellent chemical resistance and higher temperature resistance. The ceramic based monolithic linings have been reformulated to offer much lower thermal conductivities and thus better insulation. Often it is possible to utilize the insulating ability of the corrosion proof refractory and thereby eliminate external insulation. Some thermal design considerations are also discussed.

The paper also examines several generic coating materials and their advantages and limitations. Failure mechanisms will be presented for each system.

Subject
Acids, Materials, Salts, Silicates, Calcium, Chemical resistance, Flue gas, Incinerators, Plastics, Steel, Corrosion protection, Wastes, Lining
Keywords:
dual linings, corrosion resistance, ceramic refractories, temperature resistance, high temperature corrosion
© 1991 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).
1991
Association for Materials Protection and Performance (AMPP)
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