Will 3.8 MPa deoxygenated water convert itself into steam after cooling the gas in the shift humidifier?
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Will the 3.8 MPa deoxygenated water, after cooling the gas in the shift humidifier, convert itself into steam? The temperature of the gas at the inlet of the humidifier is 370 degrees, while it is 205 degrees at the outlet
At 3.8 MPa, the temperature of saturated steam is 247 degrees, so it seems it won’t turn into water vapor.
It’s certain that deoxygenated water turns into steam in the humidifier.
At a pressure of 3.5 MPa, the saturation temperature of steam is 243 degrees; only when the temperature is above 243 degrees can it turn into steam And the actual operating temperature is only 205 degrees – is that reasonable?
The 3.5 MPa pressure is the pressure of deoxygenated water; it is not the pressure of the humidifier, nor is it the partial pressure at which deoxygenated water turns into saturated steam.
The pressure of the humidifier is 3.5 MPa, and the pressure of the deoxygenated water is 3.8 MPa; in other words, the pressure in the conversion system is 3.5 MPa
3.8 MPa, 205°C: it can be steam or it can contain saturated water; if the amount added is appropriate, it will be steam, but if too much is added, liquid droplets will form, which can affect the catalyst. The latent heat of vaporization of water is very high, whereas the sensible heat of syngas is relatively low.
It must turn into steam; otherwise the catalyst will be useless
It must turn into steam! ! Or what moisture should be added? ?
It should turn into steam, because the partial pressure of water vapor in the reformate gas is likely to be relatively low – it certainly won’t reach 3.5 MPa!