Seeking help with a temperature and pressure reducing valve
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A temperature and pressure reduction valve is needed. The medium is steam, with a flow rate of ~1576 m3/h, a pressure of 1.2 MPa, and a temperature of 370°C. The diameter of the steam pipeline is specified as DN150. If the pressure is reduced to 0.8 MPa, what will be the corresponding temperature? What form is needed? A newcomer who doesn’t understand; seeking help
At a steam pressure of 12 kilograms, the temperature of the saturated steam is 191.68°C. As you mentioned, this is superheated steam; it’s difficult to determine the temperature when the pressure is reduced to 8 kilograms. This temperature depends on your requirements, which were specified by you.
1.2 MPa, 370°C – what a high superheat level! At our company, even with 3.2 MPa, we can’t reach 370°C.
That is, between 345 and 350 degrees
The mass flow rate is approximately 500 kg/h. Given such a large volume, it depends on your requirements regarding the parameters of the steam after temperature and pressure reduction. If a water bath type temperature reducer is used, saturated steam at 0.8 MPa can be obtained; whereas with insert-type or Venturi-type reducers, the saturation temperature increases by about 3°C.