The most well-known technology for post combustion CO2 capture from exhaust gas is absorption in an amine-based solvent followed by desorption. The drawback of this method is the high heat consumption required for desorption. Reduction of the energy consumption can be achieved by using alternative configurations. In this work, the standard process, vapour recompression and vapour recompression combined with split-stream configurations have been simulated using Aspen HYSYS version 8.0 for 85% amine-based CO2 removal in search for optimum process. Energy optimisation has also been performed by varying the most important parameters. This study shows that it is possible to reduce energy consumption with both the vapour recompression and the vapour recompression combined with split-stream processes. The vapour recompression process has been calculated to be the energy optimum alternative among the configurations investigated.
CO2 Capture; Aspen HYSYS; Absorption; Simulation; Optimisation; Vapour recompression
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