ProMinent Group - ProMinent GmbH

- Model III - Electrolysis System

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Output of 100 – 10,000 g sodium hypochlorite per hour. Need sodium hypochlorite that is high-purity or low-chloride and low-chlorate? The electrolysis system CHLORINSITU III is the solution. Can be used for potable water, waste water, process water, swimming pool water and in cooling towers.

From cooking salt chlorine, hydrogen and sodium hydroxide are made. Directly on site.

Electrolysis systems of type CHLORINSITU III generate sodium hypochlorite with a higher concentration of approximately 25 g/l with minimal entrainment of sodium chloride (85% output) from the diaphragm cell into the finished product. A saturated solution of sodium chloride is produced in a salt dissolving tank, included in the scope of delivery, and this solution is then electrolysed in a diaphragm cell. Sodium hydroxide and hydrogen are produced in the cathode chamber while ultra-pure active chlorine and a diluted residual brine are produced in the anode chamber, separated by the diaphragm from the cathode chamber. The resulting active chlorine is bound to the sodium hydroxide through an injector under a constant vacuum and is collected as sodium hypochlorite in a storage tank. The vacuum is kept constant by a frequency-controlled circulation pump. This creates less mechanical stress on the diaphragm in the electrolysis cell and in other parts of the system. The complete sodium hypochlorite solution can be metered, as required, by separate metering pumps. Due to its moderate pH value of 9.5 – 10, it affects the pH of the treated water significantly less than if conventional sodium-calcium hypochlorite with a pH of 12 – 13.5 were used. Much less acid is used to adjust the pH value, enabling savings of up to 70%. The hydrogen always produced during electrolysis is diluted with fresh air through an ATEX 95-approved fan and discharged safely. The salt-dissolving water comes from a softener integrated in the system, thereby preventing the formation of lime deposits and ensuring the long service life of the diaphragm cell. The efficiency of the electrolysis is constantly monitored by various flow meters, the addition of water depending on the sodium hydroxide production and a dynamic level control in the storage tanks.

  • Sodium hypochlorite solution low in chloride and chlorate with a high chlorine concentration (25 g/l FAC)
  • Minimal acid consumption for pH correction, making savings of up to 70 % possible
  • Safe system control with remote diagnosis by Remote Control Engineer
  • Excellent service life of the diaphragm cells, thanks to constant vacuum
  • A frequency-controlled circulation pump maintains the vacuum constant in the enclosed anode area
  • Maximum operating safety due to their design as negative pressure systems

Technical details
  • Modern PLC with large illuminated display
  • Integrated Remote Control Engineer for remote diagnosis and troubleshooting
  • Storage tank for multiple points of injection

Power supply 3 x 400 V (VAC/3P/N/PE/50 Hz)

Scope of delivery:

Electrolysis systems of type Chlorinsitu III are mounted ready-wired with a PLC on a powder-coated stainless steel frame in the control cabinet. They include a Remote Control Engineer for remote diagnosis and troubleshooting, integrated water softener system, diaphragm electrolysis cells, ATEX 95-compliant bleed system and separate salt dissolving tanks and level monitoring unit. Dynamic level control to monitor the storage tank to be provided on site for sodium hypochlorite. A chlorine gas warning unit and automatic monitoring of water hardness downstream of the softening system come as standard with systems producing more than 600 g/h.

Note:

Electrolysis systems of type CHLORINSITU II, III, V and V Plus are offered and planned to meet customer specifications. This is true both for the system documentation and the subsequent supply of spare parts and maintenance.

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