Condensate enters the steam flash tank – how is the design pressure of the flash tank determined?
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The 2.0 MPa steam condensate enters the steam flash drum; how is the design pressure of the flash drum determined?
Check what your steam pressures are; if you have 1.0 MPa steam, it is recommended to use the condensate water at 2.0 MPa to generate 1.0 MPa steam. In this case, the design pressure of the flash tank should be determined based on an operating pressure of 1.0 MPa
I will consider designing a pressure of not less than 2 MPa. Because when considering design pressure, the maximum operating pressure of the equipment must be taken into account. No matter how low the pressure to which you flash it, the throttling device may be damaged, and the maximum operating pressure can reach 2 MPa.
2.0MPa steam condensate is a liquid; at a pressure of 2.0MPa, it is impossible for a gas phase to form. The maximum operating pressure cannot reach 2MPa, unless pressure stacking is used.
It depends on how much you need after flashing
2.2MPA pressure. Working pressure 2.0 MPa
Direct design pressure of 2.2 MPa
A higher pressure needs to be designed if a high amount of flash steam is required. However, the pressure cannot exceed 2 Mpa; flashing occurs only when the pressure is reduced. Moreover, the pressure at the rear end cannot be higher than that at the front end, otherwise there will be problems with the return water.