Effects of operating parameters on the absorption of carbon dioxide in ammonia solutions

Hsun-Ling Bai*, An Chin Yeh

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

This study aims at the effects of operating parameters on the absorption of carbon dioxide from flue gases by ammonia scrubbing to reduce the greenhouse effect. Studies of process control were performed under inlet carbon dioxide concentrations of 8-16% (v/v), gas flow rates of 2-10 lpm, ammonia solution concentrations of 7-35% (w/w), and reaction temperatures of 25-35. The results indicated that NH3 solution concentration and the reaction temperature have significant effects on the CO2 removal efficiency and the absorption capacity, whereas the inlet CO2 concentration has only slight effects on its removal efficiency and absorption capacity. Similar tests were also done for CO2 removal by monoethanolamine (MEA) solution. Under the same operating conditions, the removal efficiencies of carbon dioxide by ammonia scrubbing (approximately 98%) are higher than those by MEA scrubbing (approximately 80%). The absorption capacities of ammonia scrubbing (0.70 to 1.40 kg-CO2/kg-NH3) are also better than those of MEA scrubbing (0.20 to 0.40 kg-CO2/kg-MEA). In view of these results, it can be concluded that ammonia scrubbing is an effective treatment process for the removal of carbon dioxide from flue gases.

Original languageEnglish
Title of host publicationProceedings of the Air & Waste Management Association's Annual Meeting & Exhibition
Editors Anon
PublisherAir & Waste Management Assoc
StatePublished - 1 Dec 1997
EventProceedings of the 1997 Air & Waste Management Association's 90th Annual Meeting & Exhibition - Toronto, Can
Duration: 8 Jun 199713 Jun 1997

Publication series

NameProceedings of the Air & Waste Management Association's Annual Meeting & Exhibition

Conference

ConferenceProceedings of the 1997 Air & Waste Management Association's 90th Annual Meeting & Exhibition
CityToronto, Can
Period8/06/9713/06/97

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    Bai, H-L., & Yeh, A. C. (1997). Effects of operating parameters on the absorption of carbon dioxide in ammonia solutions. In Anon (Ed.), Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition (Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition). Air & Waste Management Assoc.