Issues with the catalyst inlet of the two reactors and the interface with the external heat exchanger
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I am currently in charge of the management of the two-type equipment. During the construction of the 800,000-ton project, a problem arose: the weld at the junction between the inlet pipe for the two-type catalyst and the pipe of the external heat exchanger was 140 mm apart, making it impossible to connect them together. May I ask whether the solution is to prefabricate 140mm short sections directly, or to follow the manufacturing standards for pressure vessels or the welding standards for pipes? (Diameter 1800mm)
Hello, are you referring to the catalyst return pipe at the connection between the external heat exchanger and the regenerator? Here, sometimes this pipe is misaligned; usually, a winch is used to pull it back and weld it in place by hanging it from the grille
In a situation like this, it’s sufficient to directly prefabricate the short sections and connect them; however, the lining needs to be properly prepared