Why is the reboiler in the benzene extraction unit C-503 designed as a vertical heat exchanger?
Thread Content
Why is the reboiler of the extraction unit C-503, which is used in liquid-liquid extraction, designed as a vertical heat exchanger? What principle is it using? Please, expert, explain it in detail. Thank you! ! ! !
The reboiler in the benzene extraction unit C-503 is designed as a vertical heat exchanger, mainly because vertical heat exchangers offer certain advantages in terms of space utilization, heat exchange efficiency, and maintenance. This design uses flue gas or other heating media to flow outside the tubes, while the liquid flows inside the tubes; heat is transferred to the liquid through the heat exchange tubes to meet its requirements for boiling and evaporation. It adopts a vertical structure, which facilitates the upward discharge of vapor generated by boiling, helps to reduce the floor space required, and also enables better convective heat transfer, thereby improving thermal efficiency. Furthermore, vertical reboilers are more convenient for operation and maintenance than horizontal ones, as they are easier to inspect and clean. .