MODELING OF CARBONATE-ANHYDRIDE SEPARATION PROCESS FROM FLUE GASES OF THE CEMENT INDUSTRY

Abstract

Currently, the population of the Earth is suffering from problems caused by climate change. One of the main reasons for climate change is the increased concentration of greenhouse gases, in particular carbon dioxide (CO2 ), in the atmosphere. Owing to anthropogenic effects, the CO2 concentration in the atmosphere has increased by almost 1.5 times since the pre-industrial revolution. The cement production process is also considered one of the main sources of CO2 emissions, globally emitting 2.3 Gt of CO2 per year into the atmosphere. This study looks into the process of CO2 capture from flue gases in the cement plant. Initially, a cement plant with a 1 Mt/year capacity was modeled in Aspen Plus software. At the next stage, a model of membrane-based CO2 capture was built in order to reduce CO2 emissions in cement plants. According to the developed model, the required membrane surface and pressure drop values have been determined for the constraints of capture efficiency as at least 90% and CO2 purity as not less than 95%.

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