Techno-Economic Study of CO2 Capture from an Existing Cement Plant Using MEA Scrubbing |
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Authors: | SM Nazmul Hassan Eric Croiset |
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Institution: | Department of Chemical Engineering , University of Waterloo , Waterloo, ON, Canada |
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Abstract: | Carbon dioxide is the major greenhouse gas responsible for global warming. Man-made CO2 emissions contribute approximately 63% of greenhouse gases and the cement industry is responsible for approximately 5% of CO2 emissions emitting nearly 900 kg of CO2 per 1000 kg of cement. CO2 from a cement plant was captured and purified to 98% using the monoethanolamine (MEA) based absorption process. The capture cost was $51 per tonne of CO2 captured, representing approximately 90% of total cost. Steam was the main operating cost representing 39% of the total capture cost. Switching from coal to natural gas reduces CO2 emissions by about 18%. At normal load, about 36 MW of waste heat is available for recovery to satisfy the parasitic heat requirements of MEA process; however, it is very difficult to recover. |
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Keywords: | CO2 capture MEA Aspen Plus Icarus Cement plant Process simulation Economic evaluation |
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