- Title
- Degradation of amine-based solvents
- Creator
- Reynolds, Alicia; Verheyen, Vincent; Meuleman, Erik
- Date
- 2016
- Type
- Text; Book chapter
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/155317
- Identifier
- vital:11292
- Identifier
-
https://doi.org/10.1016/B978-0-08-100514-9.00016-0
- Identifier
- ISBN:978-0-08100515-6; 978-0-08100514-9
- Abstract
- Degradation of aqueous amines during post-combustion capture (PCC) of CO2 from fossil-fuel flue gases by wet gas scrubbing can lead to reduced energy efficiency, operational instability, increased corrosion, and unwanted emissions to the environment. Oxidative amine degradation and the accumulation of heat-stable salts primarily occur during absorption of CO2, whereas carbamate polymerization (also called thermal degradation) primarily occurs during desorption of CO2 and thermal amine reclamation. Oxidative degradation is closely related to corrosion, catalyzed by dissolved metal ions, and can be exacerbated by intermittent operation of PCC. Other important reactions, such as nitrosation, occur at much slower rates but can produce environmentally sensitive compounds. The ability to measure the concentrations of individual compounds or monitor amine degradation during PCC is important for managing amine degradation during PCC and demonstrating compliance with environmental regulations. Although some suitable analytical methods are available, further work is needed before they could satisfy the rigorous statutory and legal requirements. Strategies for avoiding and managing amine degradation need to be integrated into all PCC activities including: selecting degradation-resistant amines, ensuring adequate pretreatment of CO2-rich flue gas, avoiding severe CO2 absorption and desorption conditions, and the use of anticorrosion and antioxidation additives. Avoiding intermittent operation of PCC processes and choosing nonmetal column packing may also assist in minimizing amine degradation. © 2016 Elsevier Ltd All rights reserved.
- Publisher
- Elsevier Inc.
- Relation
- Absorption-Based Post-Combustion Capture of Carbon Dioxide Chapter 16 p. 399-423
- Rights
- Copyright © 2016 Elsevier Ltd All rights reserved.
- Rights
- This metadata is freely available under a CCO license
- Subject
- Carbamate polymerization; Catalysis; Heat-stable salts; Oxidative degradation
- Reviewed
- Hits: 624
- Visitors: 623
- Downloads: 2
| Thumbnail | File | Description | Size | Format |
|---|