1.0 steam and 0.4 steam
Thread Content
Can steam at 0.4 pressure be used directly as the heat source for solvent regeneration? Why is it necessary to use steam that has been cooled and depressurized to 1.0 pressure? Why must 1.0 steam be used for acidic water stripping? Isn’t a temperature of 0.4 sufficient?
Since acidic water mainly consists of hydrogen sulfide and ammonia, if the pressure and top temperature of the acidic gas stripping tower are not properly controlled, the ammonia content in the acidic gas will be high, and it will crystallize into ammonium salts upon cooling in the pipelines
The higher the saturated vapor pressure, the higher the temperature. Acid water stripping requires a high specific heat, and 0.4 MPa does not meet the process requirements. The specific heat required for solvent regeneration is relatively low, and the more stable the pressure, the better. It helps to ensure the stable operation of various parameters in the regeneration tower.
The temperature of 1.0 MPa steam is high; when the temperature of the amine solution in the amine regeneration unit exceeds 147°C, it causes degradation of MDEA