Coal is a "dirty" fuel--that is, coal is not a pure hydrocarbon but contains varying amounts of sulfur and a substantial fraction of non-combustible contaminants, commonly called ash. When coal is burned in a pulverized-coal-fired boiler furnace, the sulfur is oxidized to SO2 and SO3, and the ash is released into the furnace and becomes suspended in the mixture of reacting gases and combustion products. The presence of SO2, SO3, and ash in boiler furnaces creates an environment that is detrimental to the furnace tubes, and to convection tubes and air preheater surfaces downstream of the furnace.
Subject
Viscosity,
Tubes,
Convection,
Furnaces,
Waterwalls,
Plastics,
Heat,
Erosion,
Ash,
Boilers,
Coal,
Deposit corrosion,
Fouling
© 1980 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).
1980
Association for Materials Protection and Performance (AMPP)
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