Abstract
A carbon dioxide (CO2) capture process simulation was developed for treating flue gas from a power plant with heat integration. This process required high energy usage. It is possible to reduce energy requirements by many ways, such as mixing or changing the absorbents. Alternatively, heat integration is an alternative methodology used to minimize energy requirements. Our work was focused on the simulation and optimization of CO2 capture process in a 180 Mwe coal-fired power plant using an ionic liquid, 1-Ethyl-3-methylimidazolium Acetate (EmimAc). The challenge in process design, energy integration and utility design is to achieve the same CO2 recovery efficiency. This work, starting from an ionic liquid (EmimAc) configuration proposed by Khonkaen et al. (2014), illustrates the simulation and solution method used to implement the process heat optimization with respect to the energy consumption and capital investment cost. First, basic monoethanolamine (MEA) and EmimAc based processes were simulated with the optimization method without heat integration. Then process heat integration was applied to improve both processes by minimizing the energy usage in the system. The preliminary result showed that the designed simulated process of IL using EmimAc provided better result in term of energy requirement than conventional monoethanolamine.
