Pipe cell electrolysis units
By the flow electrolysis sodium chloride is transformed to sodium hypochlorite in a cell without a membrane as in standard units.

This type of plant is implemented especially there, where sodium chloride is aleady in an aqueous solution with a concentration of at least 14 grams NaCl per liter.
This is the case in seawater baths, natural brine baths or baths with artificial brine.
The flow electrolysis plant is arranged in a bypass to the inlet pipe of the brine which leads to the basins. A partial flow of the sodium chloride solution is conducted through the electrolysis plant where NaCl (sodium chloride) is converted to NaOCl (sodium hypochlorite). The electrolysis plant is adjusted and regulated accordingly to the sodium hypochlorite demand.

Natural brine is usually not free of hardness. The carbonates present in the solution generate coatings at the electrodes which must be removed by acid rinsing from time to time. A detailed knowledge of the brine composition (water analysis) is required to check the availability of the flow electrolysis and if necessary to design the acid rinsing.

The advantage of this system is to ensure safe operation with and without a product tank.

Also the costs for the generation of brine are dropped. The chloride content of the sodium hypochlorite solution (NaOCl) to be reached is 4-5 g/l (grams per liter). Thereby about 30 % of the salt is transformed.
Schematic representation of a NaOCl pipe cell electrolysis unit Type ECD S1000 with a performance of 1,000 grams chlorine per hour.

Technical Data