The head issue of the liquid chlorine filling pump
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This post was last edited by sunjl1981 on 2013-1-6 at 20:06. Recently, I discussed the issue of filling pressure for liquid chlorine cylinders with relevant parties, and they said that the outlet pressure of the pump should be 1.0 MPa. In my opinion, there should be a connecting pipe between the gas space inside the cylinder and the gas space in the liquid chlorine storage tank; this way, the pump’s outlet pressure would only need to overcome the resistance of the delivery pipeline. Given that the distance between the pump and the cylinder is around several dozen meters, wouldn’t a head of ten to twenty meters be sufficient? I would appreciate it if you could let me know the actual situation! Thank you. # hcbbs
The poster’s theoretical considerations are correct, but in practice, filling time and the vaporization of liquid chlorine also need to be taken into account. . . . . Due to issues such as these, the outlet head pressure of ordinary filling pumps is relatively high.
Is it related to the saturated vapor pressure of liquid chlorine at room temperature? Hehe, when liquid chlorine enters the steel cylinder, it absorbs heat and vaporizes, thereby generating pressure. If the pressure isn’t high, it definitely won’t fill up.
I personally think this approach is feasible in theory, but it might not work in practice, right? Each steel cylinder has only 2 valves: one is used for balanced exhaust in the gas phase, and the other is used for filling. Even if the pressure inside the cylinder decreases, chlorine should not flow in quickly through just one valve, right?
We are users of liquid chlorine cylinders; we’re not quite familiar with the process of filling them – we need to learn more*
Our company requires that the filling pressure be between 0.8 and 1.1 MPa. As the gas pressure inside the cylinder increases, if the filling pressure is too low, it will be impossible to fill the cylinder properly, which affects the filling efficiency.
This post was last edited by 181128425 on 2010-5-11 14:31. 1# lqh2009: It’s relatively fast to fill chlorine tankers in this way – the gas phase is pumped using a Nessler pump, while the liquid phase is filled directly with a pump. Filling gas cylinders in this way is extremely dangerous, as it can easily lead to chlorine leakage accidents ； Liquid chlorine can easily be filled into the gas pipeline; in any case, be cautious and prioritize safety. The gas cylinder is first evacuated, and during filling two tubes are used simultaneously, which makes the process quite slow; it’s worth giving it a try. Moreover, it’s difficult to fill the cylinder when the pressure is high.
This post was last edited by 181128425 on 2010-5-11 at 14:36. It’s certainly acceptable if it’s connected, but once the cylinder is filled, how does one remove the filling tube from it? And where does the chlorine inside the copper tube, as well as the liquid chlorine in the liquid pipeline, go during this removal process? In my humble opinion, please forgive any imperfections!