A common foulant in process equipment is iron sulfide (FeS) which commonly occurs as the mineral troilite, or pyrrhotite (Fe1-xS where x<1). The iron sulfide usually occurs in conjunction with various amounts of carbonaceous materials which are often coke. This fouling deposit is often amenable to chemical cleaning since the iron sulfide, when in this form, is soluble in various solvents. The iron sulfide can be dissolved thereby rendering the carbonaceous material loosely adherent to the walls of the process equipment. This loosely adherent material can then be flushed from the equipment with high velocity water.
Subject
Acids,
Materials,
Iron sulfides,
Additives,
Chemical cleaning,
Dissolution,
Solvents,
Acidity,
Constants,
Solutions,
Equipment,
Scale,
Cleaning
© 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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