I need an outline of the order of operations of an adiabatic flash drum. The inlet is $350$C mixture of H$2$O$,$ H$2$ and CO$2.$ The intent is to condense the H$2$O to be extracted, leaving the H$2$ and CO$2$ stream. What pressure and temperature should be the setpoint? How does a flash drum maintain a setpoint, is there a heating or cooling element? What are other alternative methods for condensing and extracting water from inlet gas at those conditions?