The electrochlorination package is designed to produce sodium hypochlorite from seawater.

Seawater booster pump give the seawater a certain velocity and pressure to throw the generator, then to degassing tanks after electrolyzed.

Automatic strainers will be used to ensure that sea water conveyed to the cells contains only particles below 500 microns.

After electrolysis the solution will be conveyed to degassing tanks to allow hydrogen to be dissipated by forced air dilution, via duty standby centrifugal blowers to 25% of LEL (1%)

The solution will be conveyed to the dosing point, from the hypochlorite tanks via dosing pumps.

The formation of sodium hypochlorite in an electrochemical cell is a mixture of chemical and electrochemical reactions.

ELECTROCHEMICAL

at the anode 2 Cl^- → CI₂ + 2e chlorine generation

at the cathode 2 H₂O + 2e → H₂ + 20H^- hydrogen generation

CHEMICAL

CI₂ + H₂0 → HOCI + H⁺ + CI^-

Overall the process can be considered to be

NaCI + H₂0 → NaOCI + H₂

Other reactions can take place but in practice conditions are selected to minimise their effect.

Sodium hypochlorite is a member of a family of chemicals with powerful oxidising properties called “active chlorine compounds” (also often called “available chlorine”). These compounds have similar properties to chlorine but are relatively safe to handle. The term active chlorine refers to the chlorine liberated by the action of dilute acids in solution and is expressed as the quantity of chlorine having the same oxidising power as hypochlorite in solution.

YANTAI JIETONG Seawater electrolysis system are widely used in power plant, ship, vessel, drill rig, etc which need seawater as media.