Is an enamel-lined batch pressure vessel without a jacket considered a pressure vessel?
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I would like to ask my friends: does an enamel-lined reactor with intermittent pressure operation and without a jacket count as a pressure vessel?
It is a pressure vessel; for batch operation, it is also necessary to consider the number of pressure cycles and determine whether fatigue analysis is required in accordance with JB4732.
When the project was feasible, the design institute did not consider it as a pressure vessel
What are the specific operating conditions?
Intermittent pressing, pressure 0.2 Mpa
How long does the operation take? How long will it stop? What materials? What is the operating temperature?
Operate for one-third of the time, pause for two-thirds of the time; for ***amine, at 90 degrees
The drawings are taken from the JB4732 analysis and design standards; the original poster can refer to them in order to count the total number of cycles.
I’m sorry, but I’d like to ask clearly: are enamel reactors similar to the one I described classified as pressure vessels?
Oh, but the design institute submitted a installation report for us that didn’t consider it as a pressure vessel