Can a regular shell-and-tube heat exchanger be used as a condenser and a reboiler?
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Can a regular shell-and-tube heat exchanger be used as a condenser and a reboiler?
As long as it remains within the design parameters, it can be used as a heat exchanger; however, its use as a reboiler is uncertain.
As long as it meets the process design requirements and the material is satisfactory, it’s acceptable.
Both condensers and reboilers can be considered a type of shell-and-tube heat exchanger; the term \"shell-and-tube heat exchanger\" is too general.
Under conditions that meet practical operating requirements, it can be used as a cooler. But it cannot be used as a reboiler.
Reply to 6# ztr2010: Why can’t it be used as a reboiler?
Reply to 3# Waiter: Do shell-and-tube heat exchangers used as condensers and reboilers not have baffles, and should they be installed in an upright position?
The condenser can be placed horizontally or vertically, while reboilers are usually used in an upright position； The presence of baffles is determined based on specific circumstances.
Reply to 1# Cao Sheng: The condensers and reboilers used in refineries these days are basically shell-and-tube heat exchangers, as they are easier to maintain. It can be used as long as your operating pressure and temperature are within the design parameters of the shell-and-tube heat exchanger. When used as a reboiler, detailed calculations are required, as the design of a reboiler involves the conversion of liquid phase to gas phase; a sudden increase in flow rate means that there are differences in the diameter of the inlet and outlet pipes, as well as in the number of openings, compared to ordinary condensers. Therefore, it is suggested that for new designs, there are generally no major issues, but if the purpose of the device is to be changed, thorough calculations are necessary.
Reply to 7# Caosheng: A reboiler is generally a vertical thermosyphon reboiler. Since circulation between the reboiler’s tube side and the bottom of the tower relies on the thermosyphon effect, the reboiler should have a single tube side. At the same time, there are strict requirements regarding the length of the tube bundle and the diameters of the inlet/outlet pipes; specialized calculation methods are needed, otherwise stable operation is difficult to achieve, or the reboiler may not be usable at all. Ordinary shell-and-tube heat exchangers do not have such strict requirements.