Alloy selection is described for structural elements of advanced hot gas cleaning systems used to filter particulates from process gas produced by pressurized fluidized bed coal combustion (PFBC), and coal and biomass gasification. Service environments are identified. Essential components of a typical gas filtering system are described. Material considerations are outlined for particular service conditions and particular hardware. Elevated temperature creep strength, and resistance to thermal fatigue, oxidation, carburization, corrosion and erosion are discussed for a number of components functioning in distinct service applications. Performance experience is reported for several alloys.

Subject
Steel structures, Materials, Piping, Stainless alloys, Structures, Clusters, Filters, Mechanical failure, Coal, Corrosion resistance, Fatigue, Elements, Alloys
Keywords:
alloy, hot, gas, cleaning, filter, pressurized fluidized bed, coal, combustion, gasification, biomass
© 1997 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).
1997
Association for Materials Protection and Performance (AMPP)
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