A status report on the investigation of the effects of antioxidants upon oxygen degradation of methyldiethanolamine
Natural gas production is an important source of energy for the country. The gas directly from the gas fields is not suitable for consumption due to the presence of acidic impurities. The process of gas treating separates impurities such as carbon dioxide-(CO/sub 2/), hydrogen sulfide (H/sub 2/S), and sulfur dioxide (SO/sub 2/) from the gas stream. Industrial processes such as hydrogen manufacture and ammonia production also require acid gas removal systems. The oxygen degradation reactions of MDEA (Melhyl Diethanolamine) solutions were investigated. Several primary and secondary antioxidants were tested and found to be ineffective in the first series of batch reactor experiments at 195/sup 0/F and 50 psig O/sub 2/. This may be due to an excessively high oxygen pressure whereby the inhibitor reacted with the oxygen directly in a short period of time and thus the amine was not protected against degradation. Another possibility is that the severe experimental conditions may accelerate heat stable salts formation reactions at a constant rate. The current preliminary results are indicative that oxygen degradation reactions are quite complicated. Further studies are needed to determine the best antioxidants needed for amine sweetening systems.
- OSTI ID:
- 6164703
- Report Number(s):
- CONF-870323-
- Resource Relation:
- Conference: American Institute of Chemical Engineers spring national meeting, Houston, TX, USA, 29 Mar 1987; Other Information: Technical Paper 44E
- Country of Publication:
- United States
- Language:
- English
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