The tank is equipped with a nitrogen breathing line.
Operation pressure - 1-2 kPa g.
Design pressure - 15 kPa g.
Additional explanations:
1. A safety valve is provided to protect against vacuum.
2. A spring-type safety valve (PSV) is also provided to protect against nitrogen breakthrough...
Hello!
Are there recommendations or formulas in API or other standards for determining the setting pressure of an emergency valve, safety valve, or breathing valve?
How to determine the installation pressure, knowing the operating and design pressure of the tank?
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How can I calculate the diameter of the ejected flow line?
Ejected flow is air.
Volume = 1500 m3.
Air is ejected from atmospheric pressure to 0.02 MPa abs.
Ejector type - steam ejector.
Ejection time - 30 minutes.
The true vapor pressure of gasoline in the winter season can be equal to 100 kPa(a). Since gasoline will be poured into railway tank cars, light hydrocarbon vapors will go along with the air and saturate the absorbent to about the same value. VRU operates at a pressure close to atmospheric pressure.
That was the question. It seems to be a liquid in a state of saturation with gas. Accordingly, the difference between operating pressure and saturated vapor pressure is 0.
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I design a vapor recovery unit for a gasoline tank farm and a railroad loading and unloading ramp. The customer decided to use a vapor recovery unit (also for environmental reasons). In order to reduce costs, it was decided to use an absorption type VRU, which is an absorption column...
