Electrolyte pump

The pump in this system is a FloJet model 2100-732, 12 volt, 10 amp, 60 psi, intermittent duty, demand pump. This is a self-priming diaphragm pump, and thus can be run dry without harm. 

The pump s purpose in this system is to move either distilled water or KOH from the reservoir tank to the pressure tank and electrolyzer at a pressure which is slightly above the operating pressure of the system. 

This FloJet can be operated from a 12 volt battery which is charged by a photovoltaic panel, or some other source of DC (direct current) electricity. Since the pump is rated at 10 amps, the power supply must provide 12 volts with at least 10 amps. The operation of the pump is intermittent and only for very short periods of time. 

There is a strainer/filter available for the FloJet that is placed just before the pump inlet, or a homemade strainer/filter can used in its place. The strainer should be at least 

40 mesh stainless steel screen. If a strainer/filter has been installed on the outlet of the reservoir tank as mentioned previously, this is not necessary. 

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Figure 1. Sulfur concrete sump for installation in the zinc electrolyte pumping circuit.

The pressure tank pilots the pressure of the water/electrolyte pumped in to it and the electrolyzer. This is controlled (piloted) by the hydrogen pressure in the system. 

Figure 12.2 Schematic representations ofthe cathode processes on an oxide electrolyte pumping mode.

The electrolyte pumps are turned on using same method described under water cleanup. 

Two-dimensional electrodes. Two-dimensional electrodes appropriate for metal recycling are typically based on the tank electrolyser to enable ready removal of metal plated electrodes. The simplest cells are the vertical, plate or mesh, electrode in tank units where turbulence is provided by using either inert fluidised beds [8] (Chemelec Cell, BEWT Water Engineers Ltd.) or air agitation (Reconwin cell), in conjunction with electrolyte pumping (see Figure 11.3). 

All electrical functions include a faultless operation supplied by the mains as a TN/TT net with the allowed tolerances regarding disturbances or pulses (conforming with the specification VDE 0160). In addition the following properties can be specified control of the electrolyte pumping system, the automatic replenishment system, and registration of all battery data during operation by computer management. 

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