Abstract
Hydrogen peroxide provides an opportunity to decrease usage of chlorine and chlorine derivatives such as chlorine dioxide in pulp bleaching operations. Bleaching with alkaline hydrogen peroxide or mixed peracids may be safely performed in titanium or stainless steel equipment provided proper care is taken. For mill water with calcium levels of 10 to 20 ppm, the pH and temperature limits are 11.2 and 80°C respectively. In mixed peracids service, the key to safe operation is good mixing of the peracid and pulp streams. Both titanium and stainless steel resist corrosion in dilute peracids at elevated temperatures.
© 1996 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).
1996
Association for Materials Protection and Performance (AMPP)
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