Since 1965 the mixed chemical/physical amine solvents such as sulfolane di-iso-propanol-amine (DIPA) mixtures have been utilized to remove hydrogen sulfide, organic sulfur, and carbon dioxide from natural gas, refinery gas and hydrogen manufacturing unit off gas. Many of these units are still in operation, often operating under very different conditions as in the original design. Sometimes the solvent has been adjusted. This paper addresses the influence of the changing conditions on the process parameters such as the Absorber temperature and concentration profiles, as well as the forthcoming effects on the pure aging of amine units with respect to the safety integrity. The implications of changing operating conditions for corrosion, erosion-corrosion and how to mitigate and manage are discussed.

Subject
Acids, Degradation, Corrosion rate, Carbon monoxide, Solvents, Inspection, Integrity operating windows, Stripping, Amines, Reboilers, Erosion, Steam, Erosion corrosion
Keywords:
Amine solvent, Gastreating, di-iso-propanol-amine, DIPA, ADIP, Sulfolane, Sulfinol, methyl-di-ethanol-amine, MDEA, piperazine
© 2013 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).
2013
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.