On the efficiency of reboilers using steam as a heat source
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The unit is equipped with a reboiler that uses steam at 4.0 MPa as its heat source; before the steam enters the reboiler, there is a deoxygenated water temperature regulator and a pressure control valve. The temperature of the steam entering the device is 370°C; the flow diagram of the steam inlet system is as follows: the outlet temperature of the reboiler fluid is 200°C, and the back pressure at the outlet of the steam condensate is 1.5 MPa. I would like to ask the experts here to recommend suitable temperature and pressure for feeding into the reboiler. Does the efficiency of the reboiler increase as the temperature approaches saturated steam after passing through the temperature reducer?
The higher the pressure, the lower the latent heat of vaporization; theoretically, around 230°C may be sufficient for use in the reboiler, and the temperature of 320°C after the temperature reducer can be reduced further.