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There is currently much concern over the issues of carbon dioxide emissions and climate change. Economic growth has driven carbon dioxide emission to 6 billion tonnes annually. Analysis has shown that carbon dioxide forms 13 to 15% of the combustion exhaust gases that are released directly into the atmosphere. Such concentrations can be effectively reduced using wet scrubbing. This is a capture mechanism involving the interaction of a liquid and a gas phase in a counter flow configuration. This paper presents the performance of a wet scrubbing system based on variation in flow properties. The results show that an increase in liquid and gas flow rate causes a 19% in carbon dioxide absorption. This resulted from proper mixing of gas and liquid phases within the absorber facilitated by the packed bed surface. Heating of the carbon dioxide gas caused an increase in absorption of more than 10% for varying liquid flow rate and of 14% for varying gas flow rate. This was attributed to an increase in heat energy for the reaction of carbon dioxide and water.
Czasopismo
Rocznik
Tom
Strony
9--15
Opis fizyczny
Bibliogr. 18 poz., rys., tab., wykr.
Twórcy
autor
- Department of Mechanical Engineering ELB Building, JKUAT, 62,000 Nairobi, Kenya
autor
- Department of Mechanical Engineering ELB Building, JKUAT, 62,000 Nairobi, Kenya
autor
- Department of Mechanical Engineering ELB Building, JKUAT, 62,000 Nairobi, Kenya
Bibliografia
- [1] N. Johnston, D. Blake, F. Rowland, S. Elliott, K. Lackner, H. Ziock, M. Dubey, H. Hanson, S. Barr, Chemical transport modeling of potential atmospheric CO2 sinks, Energy Conversion and Management 44 (2003) 681–689.
- [2] K. Trenberth, The Impact of Climate Change and Variability on Heavy Precipitation, Floods, and Droughts, John Wiley and Sons, 2005.
- [3] A. Cazenave,W. Llovel, Contemporary sea level rise, Annual Review of Marine Science Journal 2 (2010) 145–173.
- [4] M. Parry, O. Canziani, J. Palutikof, P. Linden, C. Hanson, Summary for policymakers in climate change 2007: Impacts, adaptation and vulnerability. contribution of working group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Tech. rep., Cambridge, Cambridge University Press (2007).
- [5] J. Ogawa, Revised Kyoto Protocol Target Achievement Plan, Tech. rep., Institute of Energy and Economics, Japan (2008).
- [6] H. Andrew, F. Timothy, An optimized supercritical oxygen fired pulverized coal power plant for carbon dioxide capture, Tech. rep., US Department of Energy, National Energy Technology Laboratory (2006).
- [7] K. Anna, N. Zhenggang, D. Sevket, Life cycle modelling of fossil fuel power generation with post-combustion CO2 capture, International Journal of Greenhouse Gas Control 4 (2010) 289–300.
- [8] C. Kenneth, E. Howard, Wet Scrubbers, 2nd Edition, no. ISBN: 1-56676-379-7, Taylor and Francis, 1996.
- [9] A. Adisorn, A. Veawab, T. Paitoon, Behavior of the mass transfer coefficient of structured packings in carbon dioxide absorbers with chemical reactions, Industrial and Engineering Chemistry Research 38 (1999) 2044–2050.
- [10] B. Meikap, G. Kundu, M. Biswas, Mass transfer characteristics of a counter current multi-stage bubble column scrubber, Journal of Chemical Engineering of Japan 37 (2004) 1185–1193.
- [11] C. Chia,W. Liu, S. Chung, Removal of carbon dioxide by absorption in a rotating packed bed, Industrial and Engineering Chemistry Research 42 (2003) 2381–2386.
- [12] A. Shabani, S. Tavoosi, B. Hashemi, Calculation of effective interfacial area in a turbulent contact absorber, International Journal of Chemical Engineering and Applications 1 (1) (2010) 117–122.
- [13] A. Zare, S. Mirzaei, Removal of CO2 and H2S using Aqueous Alkanolamine Solutions, World Academy of Science, Engineering and Technology 49 (2009) 194–203.
- [14] E. Lars, Aspen hysys simulation of CO2 removal by amine absorption from a gas based power plant, in: SIMS2007 Conference, Goteborg, 2007, pp. 73–81.
- [15] K. Schnelle, C. Brown, Air pollution control technology handbook, no. ISBN: 0-8493-9588-7 in Mechanical Engineering Handbook, CRC press, 2002.
- [16] H. Ndiritu, Capture of industrial carbon dioxide emission by wet scrubbing, Ph.D. thesis, School of Mechanical Materials and Manufacturing Engineering (2012).
- [17] A. Adisorn, T. Paitoon, A. Chakma, Effects of operating and design parameters on carbon dioxide absorption in columns with structured packing, Separation and Purification Technology 24 (2001) 403–411.
- [18] X. Wen, A. Afacan, K. Nandakumar, K. Chuang, Development of a novel vertical sheet structured packing, Chemical Engineering Research and Design 83 (2005) 515–526.
Typ dokumentu
Bibliografia
Identyfikator YADDA
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