Seawater Electro-chlorination system,
Seawater Cooling chlorination plant,

Explanation

Seawater electrolysis chlorination system take use of natural seawater to produce on-line sodium hypochlorite solution with concentration 2000ppm by seawater electrolysis, which can effectively prevent the growth of organic matter on the equipment. The sodium hypochlorite solution is directly dosed to sea water through the metering pump, effectively control the growth of the sea water microorganisms, shellfish and other biological. and is widely used in the coastal industry. This system can meet the seawater sterilization treatment of less than 1 million tons per hour. The process reduces potential safety hazards related to the transportation, storage, transportation and disposal of chlorine gas.

This system has been widely used in large power plants, LNG receiving stations, seawater desalination plants, nuclear power plants, and seawater swimming pools.

Reaction Principle

First the seawater passes through the seawater filter, and then flow rate is adjusted to enter the electrolytic cell, and direct current is supplied to the cell. The following chemical reactions occur in the electrolytic cell:

Anode reaction:

Cl¯ → Cl2 + 2e

Cathode reaction:

2H2O + 2e → 2OH¯ + H2

Total reaction equation:

NaCl + H2O → NaClO + H2

The generated sodium hypochlorite solution enters the sodium hypochlorite solution storage tank. A hydrogen separation device is provided above the storage tank. The hydrogen gas is diluted below the explosion limit by an explosion-proof fan and is emptied. The sodium hypochlorite solution is dosed to the dosing point through the dosing pump to achieve sterilization.

Process flow

Seawater pump → Disc filter → Electrolytic cell → Sodium hypochlorite storage tank → Metering dosing pump

Application

● Seawater Desalination Plant

● Nuclear power station

● Sea Water Swimming Pool

● Vessel/Ship

● Coastal thermal power plant

● LNG Terminal

Reference Parameters

Project Case

MGPS Seawater Electrolysis online Chlorination System

6kg/hr for Korea Aquarium

MGPS Seawater Electrolysis online Chlorination System

72kg/hr for Cuba power plant

Yantai Jietong Water Treatment Technology Co., Ltd is specialized in the design and manufacture of online Elec-chlorination system and High concentration 10-12% sodium hypochlorite for more than 20years.

” Seawater Electro-chlorination system” online-chlorinated sodium hypochlorite dosing system,” it generally refers to systems used for chlorination for plant which use seawater as media, such as power plant, drill rig platform, vessel, ship, and mariculture.

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

On site preparation of sodium hypochlorite using electrolysis seawater process, a certain dosage is added to the cooling water to electrolyze seawater for chlorine production. The actual process of this phase of the project is as follows: seawater → pre filter → seawater pump → automatic flushing filter → sodium hypochlorite generator → storage tank → dosing pump → dosing point.

If you have specific questions about online chlorination in your specific situation, please feel free to ask for more details. 0086-13395354133 (wechat/whatsapp) -Yantai Jietong Water Treatment Technology Co.,Ltd. !