Large Steel Vessel Design
Large Steel Vessel Design
(OP)
I am a chemical engineer working on a rather mechanical/structural engineering oriented project - sizing explosion venting for a future spray dryer. NFPA does a good job of explaining how to come about the needed venting area, but the thing I am hung up on is how to calculate the design pressure of a vessel. Spray dryers would be a large cylinder and truncated cone. I can calculate the hook and longitudinal stresses easy enough for a given pressure, but I am looking for any resources on standards and codes associated with vessel design. The dryer would operate at about -0.5 inches of water, so I don't believe this is technically a pressure vessel. Are there any books or documents you can recommend that discusses things like stiffener ring placement, supports, wall thickness or general design of large steel enclosures at pressures near atmosphere?
Thank you!
Thank you!






RE: Large Steel Vessel Design
RE: Large Steel Vessel Design
I suggest designing for the worst (lowest) possible negative pressure, not the operating negative pressure. Mechanical engineers should be able to define the worst case from fan/blower specs. Don't want an operating excursion or error to collapse the vessel.
www.SlideRuleEra.net
www.VacuumTubeEra.net
RE: Large Steel Vessel Design
"Useful Information on the Design of Plate Structures" Vol 2,,AISI
RE: Large Steel Vessel Design
You mention "how to calculate the design pressure". The tank and pressure vessel standards all assume you're given the pressure and you take the design from there. The pressure used may be based on flow considerations, may be based on the set points or flow characteristics of the relief valves, etc.
RE: Large Steel Vessel Design