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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| Amine gas treating | 3/3 | https://en.wikipedia.org/wiki/Amine_gas_treating | reference | science, encyclopedia | 2026-05-05T10:45:56.042709+00:00 | kb-cron |
Low pressure gas increases difficulty of transferring CO2 from the gas into amine Oxygen content of the gas can cause amine degradation and acid formation CO2 degradation of primary (and secondary) amines High energy consumption Very large facilities Finding a suitable location (enhanced oil recovery, deep saline aquifers, basaltic rocks...) to dispose of the removed CO2 The partial pressure is the driving force to transfer CO2 into the liquid phase. Under low pressure, this transfer is hard to achieve without increasing the reboilers' heat duty, which will result in higher costs. Primary and secondary amines, for example, MEA and DEA, will react with CO2 and form degradation products. O2 from the inlet gas will cause degradation as well. The degraded amine is no longer able to capture CO2, which decreases the overall carbon capture efficiency. Currently, a variety of amine mixtures are being synthesized and tested to achieve a more desirable set of overall properties for use in CO2 capture systems. One major focus is on lowering the energy required for solvent regeneration, which has a major impact on process costs. However, there are trade-offs to consider. For example, the energy required for regeneration is typically related to the driving forces for achieving high capture capacities. Thus, reducing the regeneration energy can lower the driving force and thereby increase the amount of solvent and size of absorber needed to capture a given amount of CO2, thus, increasing the capital cost.
== See also == Ammonia production Hydrodesulfurization WSA Process Claus process Selexol Rectisol Amine Ionic liquids in carbon capture Solid sorbents for carbon capture
== References ==
== External links ==
Description of Gas Sweetening Equipment and Operating Conditions Selecting Amines for Sweetening Units, Polasek, J. (Bryan Research & Engineering) and Bullin, J.A. (Texas A&M University), Gas Processors Association Regional Meeting, Sept. 1994. Natural Gas Supply Association Scroll down to Sulfur and Carbon Dioxide Removal Description of the classic book on gas treating Archived 2008-03-16 at the Wayback Machine by Arthur Kohl; Richard Nielsen. Gas Purification (Fifth ed.). Gulf Publishing. ISBN 0-88415-220-0.