This chapter reviews the thermal integration for minimum external energy
consumption of CO2 capture process using amines. Post combustion capture of CO2
through the use of amines is a well established technique; the stand alone process is
highly energy-intensive since the recovery of the amine solution is achieved through the
use of a separation process where heating and cooling are required. Energy integration
of the hot flue gas coming from a power station plant from where CO2 is absorbed can
serve the purpose of providing the heating and cooling needs of the process. Heat
recovery through steam raising is considered for heating, cooling and for the production
of power for the operation of pumps and compressors. The results show that the needs
of the largest energy user of the process can be fully met by heat integration.
Keywords: Minimum energy consumption, CO2 capture, process integration,
numerical simulation.
