The vaporization rate issue in horizontal thermosyphon reboilers
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Hello everyone: Recently, when calculating a thermosyphon reboiler, a vaporization rate of 11% (on a mass basis) was used for the MDEA solution; relevant books state that the vaporization rate for aqueous solutions should not exceed 20%. Then an experienced senior said that it’s best to choose a range of 6% to 12%, otherwise there is a risk that bubbles could cause small holes in the pipes (please forgive my wording). What are everyone’s thoughts?
Is there none? . . Is there any? . . Well. . .
The vaporization rate is taken as an average value (ranging from 0% to 24% from the lower to the upper end of the heat exchange tube), which is 12%. If the vaporization rate is too high, there will be more vapor in the upper part, resulting in a lower transfer coefficient and poorer heat transfer; this in turn reduces the effective heat transfer area of the reboiler. Generally, the vaporization rate should not exceed 33%
Thank you for sharing, I’ll learn from it! ! ! ! !
Steady flow is one of the reasons