Technical Evaluation of Selexol-Based CO2 Capture Process for a Cement Plant.
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Date
2015-01
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Abstract
Cement industry accounts for the second largest emitter of anthropogenic greenhouse gas in the
globe with 900 kg CO2 emitted into the atmosphere from producing one tonne of cement. Hence,
the effort made to mitigate this issue seems not productive , which gives rise to the design of the
carbon capture and sequestration [CCS] process which is one of the few ways obtained to greatly
reduce CO2 production from the cement plant. The research work assessed the technology used
for the cement plant by employing an old cement plant with post-combustion CO2 capture using
physical solvent (Selexol). The Aspen Hysys simulation results show that the process can capture
97% of the CO2 and lean loading of 0.37. The Ashaka Cement Plant operates at maximum
capacity of approx. 1 million tonnes cement /year with CO2 released at about 500,000 tonnes per
year. The capture unit was able to reduce the CO2 released into the atmosphere from 4.86% to
0.13%. The overall result of the analysis shows that selexol has proven to be thermally and
chemically stable under the operating conditions used. It is recommended that, the simulation
results should be retrofitted into the Ashaka cement plant, in order to determine the best CO2
capture efficiency, performance which results to the choice of this capture technology.
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Keywords
Carbon capture, greenhouse gas emission, selexol, aspen hysys, cement plant
Citation
Tsunatu D Y, Mohammed-Dabo I A, Wazir S M. Technical Evaluation of Selexol-Based CO2 Capture Process for a Cement Plant. British Journal of Environment and Climate Change. 2015 Jan-Mar; 5(1): 52-63.