Classification confirmation of pressure vessels
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Jacketed heater: 1. Inner tube Φ102*17, pressure: 22 MPa, temperature: 280°C, medium: solution. 2. Outer tube Φ273*9, pressure: 1 MPa, temperature: 320°C, medium: heat transfer oil. Which category of pressure vessel should this type of equipment be classified under?
Heat exchange pressure vessels (code E), high-pressure vessels (design pressure of 10 MPa to 100 MPa, code H); (3) High-pressure vessels: 9.81 MPa (100 kg/cm2) ≤ p
1. What are the standard boiling points of the two media? 2. Does it contain a gas phase? 3. Is the pressure value the operating pressure or the design pressure? It’s hard to judge just by looking at the conditions you’ve given
According to the new specifications, since the inner diameter of the inner tube is 68 and less than 150, it certainly does not fall into any category. As for the outer tube, the temperature of the heat transfer oil must be above its boiling point. It is necessary to determine what the volume remaining after removing the inner tube from the outer tube is; if this volume exceeds 30 liters, then it falls into a certain category, otherwise it does not.
According to the new specifications, since the inner diameter of the inner tube is 68 and less than 150, it certainly does not fall into any category. As for the outer tube, the temperature of the heat transfer oil must be above its boiling point. It is necessary to determine what the volume remaining after removing the inner tube from the outer tube is; if this volume exceeds 30 liters, then it falls into a certain category, otherwise it does not.
It is also necessary to know the V value of the heat transfer oil; if it reaches or exceeds 30 L, it should be classified according to A-2. P and V are based on heat transfer oil
One more condition must be added: the standard boiling point of the heat transfer oil must also be less than or equal to 320 degrees Celsius. All three conditions of P, V, and T must be met in order to use diagram A-2
This device cannot be classified in this category; its inner diameter is less than 150 mm, and the temperature of the medium inside the outer tube is below the standard boiling point