Regarding the issue of pressure vessel categories
Thread Content
The medium in the shell side of the heat exchanger is sulfuryl chloride and sulfur monochloride; the design pressure is 0.3 MPa, the design temperature is 145°C, the operating pressure is 0.2 MPa, and the operating temperatures at the inlet/outlet are 130/70°C respectively. The medium in the tube side is circulating water; the design pressure is 0.65 MPa, the design temperature is 145°C, the operating pressure is 0.4 MPa, and the operating temperatures at the inlet/outlet are 30/42°C respectively. I would like to ask the experts: what category of container should this device belong to?
Volume data is missing. It’s hard to say.
The heat exchanger has a diameter of 900, a shell side length of 4000 mm, and an overall length of 5000 mm
If the working temperature of the shell-side fluid is gas, it falls under the first group of fluids, and the equipment can be classified as Category II for the shell side.
I’m also struggling with deciding whether sulfoxide chloride belongs to the first group of media or the second group
There seems to be an issue with this self-assessment. I just checked your medium, and it shows that it decomposes at 140°C. Have you taken this factor into account in setting the design temperature at 145 degrees Celsius? https://baike.so.com/doc/3292966-3468875.html
When classifying, should the medium state be considered based on operating temperature or design temperature?
Operating temperature: depends on the state of the medium at that operating temperature.
But it seems like 20660 doesn’t have this medium
Class II; I also use this equipment for the cooler behind the sulfoxide chloride production reactor.