Evaluation of the Chemical Absorption Technology for CO2 Capture of Industrial Gases Using Monoethanolamine (MEA)
Special Symposium - Environmental Protection & Sustainability
Environmental Protection & Sustainability (EPS - Poster)
Keywords: absorption, CO2, capture, environmental problems, MEA
One of the globally environmental problems more diffused has been the pollutant gases emissions, being CO2 one of the main causes of these impacts. The reduction of the emission of this gas for the environment is constituted in a challenge and in an opportunity of technological development.
Among the technologies of capture of CO2 of industrial gases one of the more maids are the chemical absorption using ammines. That technique has been economically objective of great studies for being a method viable and of great applicability in the industry. That work searching for to analyze the capacity of absorption of CO2 in MEA, using a semi-industrial pilot plant mounted in the laboratory of Petroleum and Natural gas of UNIFACS, seeking to optimize that technique and to analyze the efficiency of the process.
The used equipment bases on the continuous contact between steam and liquid, using a cylindrical column filled with rings of glass Rasching. The gas and the liquid drain in countercurrent, for a larger absorption. The desorption is made through temperature variation, in a column similar to the one of absorption. For the verification of the amount of absorbed carbon dioxide they were made analyses chromatographics and in parallel analyses for neutralimetry for determination of the concentrations of total MEA, carbonated MEA and free MEA.
The chromatographics analyses made in the top of the absorbing column show the efficiency of the process, once the feeding gas contained about 11,5% mol of CO2 and the concentration of this gas obtained was around 0,67% mol In parallel, other studies are being made, such as stability of the used ammines since this is one of the factors that interfere in the efficiency of the process.
This work obtained satisfactory results, compared with the literature. The efficiency of the process of absorption of CO2, using MEA as solvent, was proven for the maxims concentrations of this gas obtained in the top of the column regenerator in a percentage around 98,6824%. To leave of those results it is ended that the process of absorption of CO2 of gaseous currents is viable being, however, a lot of necessary pledge in researches for improvement of the technology, could be applied in industrial scale.
In the evaluation of this technique of CO2 absorption, an important contribution is verified in relation to minimization of environmental problems, with the possibility of retreat of this gas of the atmosphere, aiding in the conditions of sustainability of the planet and simultaneously making possible some industrial applications.
Presented Monday 17, 13:30 to 15:00, in session Environmental Protection & Sustainability (EPS - Poster) S-7P.
