The use of gas turbines in conjunction with advanced coal combustion or gasification systems has been proposed for the generation of electric power. One type of system would involve the expansion of the gases produced by a pressurized fluidized bed through a gas turbine as a means of energy conversion. Another type of system would involve the combustion of gases produced by a coal gasifier in a gas turbine to generate electric power. In both of these applications, the gases entering the high pressure turbine will not only be oxidizing, but may also contain gaseous oxides and molten salts which are products of contaminants present in the coal. It is anticipated that these gas contaminants may cause accelerated corrosion of gas turbine hot section components, thereby significantly reducing the useful lifetime of the gas turbine engine. Moreover, it is further anticipated that the gases from the combustor or gasifier may contain solid particles of coal ash, dolomite from the bed, or uncombusted coal. It is probable that these particles, traveling at high velocities will contribute an erosive component to the corrosion which will accelerate the degradation of the turbine materials.

Subject
Test methods, Materials, Fluxes, Gas turbines, Metal surfaces, Particulates, Metallic surfaces, Oxide scales, Oxide surfaces, Powders, Erosion, Test specimen, Oxidation
© 1977 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).
1977
Association for Materials Protection and Performance (AMPP)
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