Steam resistance phenomenon in constant-pressure reboilers
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Do the reboilers in the constant pressure/constant vacuum unit’s primary line often experience vapor lock? The liquid cannot flow downward, and heat exchange stops. What we do is to disconnect the heat source and restart the heat exchanger. Does anyone have a better method? Under what conditions is vapor lock likely to occur? I think it’s when there are fluctuations in the heat source flow, which sometimes lead to vapor lock.
Don’t you have steam at your factory? This problem does not occur if steam is used for direct stripping. What is your heat source medium, and what is the temperature? Only then can it be solved.
In the heat source unit, the temperature inside the reboiler is around 240 degrees.
Both the inlet and outlet of the reboiler are filled with liquid, but the gas inside the shell cannot be discharged, preventing proper heat exchange. There is no vent valve; even if there were one, it couldn’t be used as the gas is light oil vapor. What should be done? The self-pressure of the stripping tower alone isn’t sufficient to expel that gas.
This post was last edited by dongliangsir on 2010-4-27 22:52 at http://bbs.hcbbs.com/viewthread....%D6%D8%B7%D0%C6%F7 It seems we have reached a conclusion after spending a whole night looking for it... Friends, Haichuan is a huge database – if you work hard, you’ll be able to get everything you need!:lol
What does vapor resistance mean? Gas resistance? Sometimes, the steam traps in steam pipes fail to drain water – could this also be due to steam-induced vapor resistance?
Reply to 6#: I’m Xiaosu Ren. Looking at it now, calling that phenomenon in the reboiler \"vapor resistance\" isn’t quite appropriate; it’s completely different from what a steam trap does.