Economic Evaluation of Selexol – Based CO2 Capture Process for a Cement Plant Using Post – Combustion Technology

Authors(3) :-Tsunatu D. Yavini, Mohammed-Dabo I. Ali, Waziri S. Muhammad

This research work focuses on the economic evaluation of post-combustion technology to capture CO2 from a based Cement Plant using a physical absorption solvent called Dimethyl Ether Polyethylene Glycol-DEPG (Selexol). The low cost Selexol absorption unit captured 97% of the CO2 with 98% purity by mole of the CO2 through absorption into a 0.37 mole CO2/mole Selexol lean loading of the physical solvent. A detailed cost estimation of the CO2 post-combustion unit of the plant was carried out in order to evaluate the economic performance of the process and cost of CO2 captured, the additional utility costs associated with this technology. The CO2 capture cost per tonne of CO2 captured was found to be $58 (₦9,333). The Total Operating Cost was estimated at $27,542,469 (₦4.5Billion) and the Total Capital cost was estimated at $19,222,886 (₦3.08 Billion). The raw material cost was the highest cost in the CO2 capture process with a value of $19,500,000 (₦3.1 Billion) representing 71% of the total operating cost. Sensitivity analysis cases of the impact of absorber temperature, pressure and absorber inlet gas temperature on liquid and vapour flow, percentage CO2 recovery, energy consumption, annual operating and capital costs and cost of CO2 captured were studied. The overall result of the analysis shows that Selexol has proven to be thermally, chemically stable and commercially justifiable under the operating conditions used.

Authors and Affiliations

Tsunatu D. Yavini
Chemistry Department, Taraba State University, Jalingo Taraba, Nigeria
Mohammed-Dabo I. Ali
Chemical Engineering Department, Ahmadu Bello University, Zaria Kaduna, Nigeria
Waziri S. Muhammad
Chemical Engineering Department, Ahmadu Bello University, Zaria Kaduna, Nigeria

Absorption, Carbon Capture, Costs, Post-Combustion, Selexol, Sensitivity.

  1. Nazmul - Hassan, S.M., (2005): Techno - Economic Study of CO2 Capture Process for Cement Plant. Research Project, Department of Chemical Engineering. University of Waterloo- Ontario, Canada.
  2. Rubin, E.S., and Rao, A.B. (2002): A Technical, Economic and Environmental Assessment of  Amine - Based CO2 Capture Technology for Power Plant Greenhouse Gas Control. Annual Technical Progress Report. U.S Department of Energy/Control for Energy and Environmental Studies, Carnegie Mellon University, Pittburgh.
  3. IEA, (2007): Tracking Industrial Energy Efficiency and CO2 Emissions, OECD/IEA, Paris, France.
  4. IEA WPFF (2005): Challenges for Large-Scale CO2 Utilization and Sequestration. IEA Working Party on Fossil Fuels, Task Force on Zero Emissions Technology Strategy, Washington DC, March 19, 2012.
  5. WBCSD-World Business Council for Sustainable Development (2001): CO2 Emission Monitoring and Reporting Protocol for the Cement Industry. Version 1.5, Geneva,   Switzerland.
  6. Rubenstein, M. (2012): Emission from the Cement Industry. The Global Network for Climate Solutions (GNCS FACTSHEETS). The Earth Institute, Columbia University.
  7. WRI, (2005): Navigating the Numbers: Greenhouse Gas Data and International Climate Policy. World Resource Institute. pp. 72 - 74.
  8. James, L.R., David, D.B and Sabah, U.R (1986): Engineering Economics, 1st Canadian Edition. McGraw-Hill, Ryerson Limited. pp. 40 - 64.
  9. Barker D.J., Turner S.A, Napier - Moore P.A., Clark, M. and Davison J.E (2007): CO2 Capture in the Cement Industry. Energy Procedia 1, GHGT - 9, Elsevier; Science Direct. Pp. 87-94.
  10. Singh, D., Croiset, E., Douglas, P.L., and Douglas, M.A. (2003): Techno-Economic Study of CO2 Capture from an existing Coal-Fired Power Plant: MEA Scrubbing vs. O2/CO2 Recycle Combustion. Energy Coversion Management, (44), pp. 3073 - 3091.
  11. Nsakala, N.Y., Marion, J., Bozzuto, C., Liljedahl, G., and Palkes, M. (2001): Engineering Feasibility of CO2 Capture on an existing U.S Coal - Fired Power Plant. Final Report, Vol. I, ALSTOM Power Inc. U.S.A
  12. Mariz, C.L.(1998): Carbon Dioxide Recovery, Large Scale Design Trends. The Journal of Canadian Petroleum Technology (37), pp. 42 - 47
  13. Xi, L. and Jia, L. (2012): Assessing the Value of Retrofitting Cement Plant for Carbon Capture: A Case study of a Cement Plant in Guangdong, China, Energy Conversion and Management, Elsevier (64). pp. 454 - 465.

Publication Details

Published in : Volume 1 | Issue 5 | November-December 2015
Date of Publication : 2015-12-30
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 194-203
Manuscript Number : IJSRST151542
Publisher : Technoscience Academy

Print ISSN : 2395-6011, Online ISSN : 2395-602X

Cite This Article :

Tsunatu D. Yavini, Mohammed-Dabo I. Ali, Waziri S. Muhammad, " Economic Evaluation of Selexol – Based CO2 Capture Process for a Cement Plant Using Post – Combustion Technology ", International Journal of Scientific Research in Science and Technology(IJSRST), Print ISSN : 2395-6011, Online ISSN : 2395-602X, Volume 1, Issue 5, pp.194-203, November-December-2015.
Journal URL :

Article Preview