A process stream consisting of benzene vapor at 500oC and 2 bar is to be cooled to 200oC by producing steam at 50 bar, using the two exchanger system shown in Figure Q1. Boiler feed water at 75oC and 50 bar is first heated to saturation in exchanger 2. Saturated water is partially boiled in exchanger 1. The vapour liquid mixture from exchanger 1 is mixed with the saturated water from heat exchanger 2 and the phases are separated in the flash drum. Figure Q1: Flow diagram for steam boiler loop Evaluate: the degrees of freedom for each unit and 2.the degrees of freedom for the whole process using the redundant streams variables and redundant streams constraints that being eliminated.
A process stream consisting of benzene vapor at 500oC and 2 bar is to be cooled to 200oC by producing steam at 50 bar, using the two exchanger system shown in Figure Q1. Boiler feed water at 75oC and 50 bar is first heated to saturation in exchanger 2. Saturated water is partially boiled in exchanger 1. The vapour liquid mixture from exchanger 1 is mixed with the saturated water from heat exchanger 2 and the phases are separated in the flash drum.
Figure Q1: Flow diagram for steam boiler loop
Evaluate:
- the degrees of freedom for each unit and
2.the degrees of freedom for the whole process using the redundant streams variables and redundant streams constraints that being eliminated.
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