a) Superheated steam at 300°C and 5.0 bar absolute is used to heat a counter-currently flowing stream of propylene gas in an adiabatic heat exchanger. The propylene gas enters the heat exchanger at 40°C and 250 kPa and leaves at 250°C. All of the steam condenses and emerge from the heat exchanger as a saturated liquid at the same pressure.
i) Taking a basis of 100 mol/s of the feed gas, draw a completely labelled the flow diagram of the process.
ii) Suppose the C3H6 at 40°C and 250 kPa and Water at 0.01°C and 0.00611 bar are chosen as a reference state, find all required values of enthalpy, Ĥi | |
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iii) Calculate the required mass feed rate of the steam by using the energy balance on the system. | |
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iv) Compute the rate of heat that must be transferred (kW) from the water to the propylene. | |
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