In this study, the dynamic responses of three C5 fraction separation processes: conventional, simplified, and intensified processes with control systems are investigated. The simplified process provides higher concentration of DCPD in the product and can be stable in the dynamic state. While an intensified process can substantially reduce energy consumption, it is necessary to fix the liquid split ratio in the divided wall column that separate IP from extractive solvent NMP and DCPD to maintain the steady state. Otherwise loss of NMP to DPCD will upset the process.