Do the shell-and-tube heat exchangers used in petrochemical enterprises fall under the category of pressure vessels?
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The shell-and-tube heat exchangers used in petrochemical enterprises have a design pressure of 2.04 MPa (for the shell side) and 1.57 MPa (for the tube side), with xylene as the working fluid. Do they constitute pressure vessels? What category of pressure vessel? Thank you!
This post was last edited by B0SS on 2017-6-22 at 13:07; it belongs to the category of pressure vessels
It falls under pressure vessels, but for classification, it is necessary to refer to the relevant regulations based on the specific operating conditions of the medium involved
Based on the parameters you provided, it belongs to Category I pressure vessels. A shell-and-tube heat exchanger is a type of heat exchanger in which the inner tube within the concentric tubes serves as the heat transfer element. Two tubes of different diameters are fitted together to form a concentric sleeve; each section of this sleeve is referred to as a \"stage.\" The inner tube of each stage (the heat transfer tube) is connected via U-shaped elbows, while the outer tubes are connected in series using short tubes and fixed to brackets. Heat is transferred from one fluid to another through the wall of the inner tube.
It belongs to pressure vessels. It’s a category II pressure vessel, I guess.
It is a pressure vessel; its classification is determined in accordance with the regulations for pressure vessels. As for the specific category, it is determined based on the type of medium – it falls into category 1 or category 2.