I would like to ask whether expansion joints are necessary in a fixed-bed reactor
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Here’s the situation: We previously purchased a fixed-bed reactor with a diameter of 1900, a tube length of 6000, and an operating temperature of 270 degrees; the reactor vessel is equipped with an expansion joint； I recently bought another one; all the parameters are the same as before, except that the manufacturer is different. The reactor that was sent did not come with expansion joints, which puzzled me a bit – I wonder if it was a design error on the part of the manufacturer or if, after calculation, expansion joints are indeed not necessary Seeking help from experts
According to the book \"Heat Exchanger Process Design\" compiled by Sun Lanyi and others, on page P78, the sixth line from the top states that if the metal temperature of the shell and tubes exceeds 30°C or 50°C, or if the maximum temperature difference between the cold fluid inlet and the hot fluid inlet exceeds 110°C, then the use of a fixed-tube heat exchanger without expansion joints will result in uneven thermal stresses and leakage. However, he added an uncertain phrase at the end, haha:lol
It is necessary to conduct calculations to determine whether an expansion joint is required. It’s not the case that adding it when calculation is not needed makes things safer. It depends on the actual situation; let’s do the calculations first