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Author: Subject: A slightly dangerous but surprisingly effective way to make HCl
mysteriusbhoice
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[*] posted on 21-9-2020 at 10:12


Quote: Originally posted by macckone  
You would probably be better served with a siphon type arrangement.
You can modify an aquarium pump to act as a vacuum.
The intermediate vessel can then be emptied without impacting the cell.


The impeller of aquarium pumps seem to be housed in such a way that its only the plastic which is exposed which makes sense given its meant to be underwater for years.

Now for the siphon idea so I hook up a drain hose to the pump but then how would I fill the cell ?
would I have to use 2 pumps or just 1 hose leading to a reservoir but what worries me is the pressure of the gas exerted onto the liquid if I were to only use one pump so im guessing 2 is the magic number with regulator valves on both ends to control the flow rate for both pumps.

I found one of those super mini 5v USB mini water pumps which fit in your hand and overall that should handle continuous mode operation of the cell.

Honestly tho id rather just have a single pump tbh since I will actually have 2 cathode chambers which will be made very large in the final cell.

and only intermittent filling and draining would be required

[Edited on 21-9-2020 by mysteriusbhoice]

[Edited on 21-9-2020 by mysteriusbhoice]
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macckone
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[*] posted on 21-9-2020 at 11:56


A lot of how you do it is going to depend on the cell design.
In a commercial operation there is continuous flow through the electrolytic portion of the operation.
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mysteriusbhoice
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[*] posted on 25-9-2020 at 10:23


New HCl reactor chamber made of acrylic to resist UVC better.
safety pop off cap installed and volume reduced

HCl reactor 4.0.jpg - 55kB

[Edited on 25-9-2020 by mysteriusbhoice]
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mysteriusbhoice
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[*] posted on 26-9-2020 at 01:24


Porous barrier itself has poor efficiency because of the migration of hypochlorite produced by the equilibrium reaction to the cathode side and migration of hydroxides to the anode side...
Instead I have changed it so that the anode side of the PVC porous barrier is now painted with PVA-Borate hence the birth of a new membrane I call the PVC substrate PVA-Borate membrane.
Ion conductivity increased compared to porous barrier alone after addition, I just hope due to the lesser forces of osmosis the membrane will be stable in the anode chamber even with increase in hydroxide conc.
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mysteriusbhoice
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[*] posted on 3-10-2020 at 03:22


the HCl generator is finalized using the new 4 liter MMO salt cake PVA ion exchange membrane cell and the new glass UVC chamber since plastics seem to fk off due to the UV.
video below
https://youtu.be/TQdvB5W4Zb8

HCl go BRRR.jpg - 28kBHCl cell go brrr.jpg - 44kB
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