A research program to investigate the reactions and interactions of neutralizing amines with hydrochloric acid and/or hydrogen sulfide and the effects of these interactions on the resultant control of pH during the early stages of water condensation has been completed. Three common neutralizing amines and ammonia were studied. An interesting effect of excess neutralizing amine on hydrogen sulfide in the aqueous phase has been noted and explained. Information from a laboratory simulator has been used to complement theoretical models to predict the pH profile in an heat exchanger as a function of the percent of the water condensed. During the course of this work several important properties of the neutralizing amines and their salts were studied or determined. An exact equation to calculate pH from the analytical concentrations of hydrochloric acid, hydrogen sulfide and weak mono- or dibasic bases was derived.

Subject
Acids, Hydrogen sulfide, Water, Salts, Dimples, Solubility, Ammonia, Naphtha, Vapors, Acidity, Amines, Hydrochloric acid, Chlorides
© 1988 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).
1988
Association for Materials Protection and Performance (AMPP)
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