Comparison of ammonia and monoethanolamine solvents to reduce CO2 greenhouse gas emissions

Abstract

Ž. This paper presents experimental results on the evaluation of two reagents, ammonia NH and monoethanolamine 3 Ž . Ž . MEA solvents, for scrubbing carbon dioxide CO greenhouse gas emissions. The scrubbing of CO by NH 3 scrubbing process. This indicates that the energy requirement for the regeneration of NH reagent should be less 3 than that for the regeneration of MEA reagent. ᮊ which significantly contribute to global warming, and that the global warming caused by increasing emissions of these gases is one of the most serious environmental problems. Among these gases, CO has the greatest adverse impact on the 2 observed greenhouse effect causing approximately 55% of the observed global warming Ž . IPCC, 1990 . Hence, the reduction of CO emis-2 sions from the fossil fuel energy systems is considered to be the most urgent to slow down the global warming trend. 0048-9697r99r$ -see front matter ᮊ 1999 Elsevier Science B.V. All rights reserved. Ž . PII: S 0 0 4 8 -9 6 9 7 9 9 0 0 0 2 5 -X ( ) A.C. Yeh, H. Bai r The Science of the Total En¨ironment 228 1999 121᎐133 122

Reject Brine Management

“…The reactor temperature was monitored with time and found to increase up to 41 °C, then drop and stabilize at 30 °C. Although this sudden change in the heat of reaction may be attributed to the reactor dynamics, a similar finding was reported by Yeh and Bai (1999) who attributed it to variations in the concentration of NH 3 in the solution. This, however, is unlikely to be the case, since the heat of reaction obtained by the thermodynamic analysis (Table 5.3) is per mol of NH 3 , and it is only a function of temperature.…”

Absorption of Carbon Dioxide in a Bubble-Column Scrubber

“…In the current stage system (4) is a more popular system in the removal of carbon dioxide. However, system (3) is a more attractive process since aqueous ammonia absorbent has a lot of advantages, including higher absorption capacity, cheaper, lower energy required from the viewpoint of regeneration, no corrosion problem, and safety, as compared with MEA process (Yeh & Bai, 1999;Yeh et al, 2005). Ammonia scrubbing process is widely applied to produce ammonia bicarbonate (ABC) as a fertilizer in the Chinese chemical industry.…”

Recovery and Sequestration of Co2 From Stationary Combustion Systems by Photosynthesis of Microalgae

“…Ammonia has a higher equilibrium loading capacity than monoethanolamine and the energy requirement for regenerating ammonia is lower than for monoethanolamine. 5 Information from the literature study of recyclable solvent CO 2 flue gas separation systems is being applied to develop the Excel and Aspen Plus models of this component.…”