The search for a laboratory performance test that simulates the conditions in crude tower distillation units for evaluation of corrosion inhibitors has resulted in a large number of static and dynamic tests. The literature has been reviewed by Hausler.(1) He concluded that a major limitation of these techniques was the higher concentration of inhibitor required for protection relative to the concentrations used in the field. Recently, Paton(2) described a gold-plated pilot plant that permitted pH control and inhibitor concentrations in the 4 to 10 ppm range. Hausler(1,3) also proposed a resistance probe technique that could discern the extent of protection (up to 100%) with 1 to 10 ppm of inhibitor. Both of these tests have merit because inhibitors are used in the field in the 20 ppm range during pretreatment and in the 10 ppm range during normal operations.

Subject
Scanning electron microscopy, Hydrogen sulfide, Steel surfaces, Corrosion rate, Corrosion inhibitors, Toluene, Steel, Corrosion probes, Pitting, Oxygen, Corrosion protection, Electrical resistance probes, Test specimen
© 1979 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).
1979
Association for Materials Protection and Performance (AMPP)
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