Develop the separation sequence of the following mixture to obtain each component of a stream with the following composition: Propane 100 lbmol/hr, i-butane 300 lbmol/hr, n-butane 500 lbmol/hr, i-pentane 400 lbmol/ hour Place in the evidence the process diagram with the specifications of T, P and Q of the currents and separation stages. thermodynamic model used.