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How to protect seawater using equipment, pump, pipe from corrosion

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How to protect seawater using equipment, pump, pipe from corrosion,
,

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.

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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

Model

Chlorine

(g/h)

Active Chlorine Concentration

(mg/L)

Seawater flow rate

(m³/h)

Cooling water treatment capacity

(m³/h)

DC Power consumption

(kWh/d)

JTWL-S1000

1000

1000

1

1000

≤96

JTWL-S2000

2000

1000

2

2000

≤192

JTWL-S5000

5000

1000

5

5000

≤480

JTWL-S7000

7000

1000

7

7000

≤672

JTWL-S10000

10000

1000-2000

5-10

10000

≤960

JTWL-S15000

15000

1000-2000

7.5-15

15000

≤1440

JTWL-S50000

50000

1000-2000

25-50

50000

≤4800

JTWL-S100000

100000

1000-2000

50-100

100000

≤9600

Project Case

MGPS Seawater Electrolysis online Chlorination System

6kg/hr for Korea Aquarium

jy (2)

MGPS Seawater Electrolysis online Chlorination System

72kg/hr for Cuba power plant

jy (1)Seawater electrolytic chlorination machine is a device that combines electrolysis and chlorination process to produce active chlorine from seawater. Seawater electrolysis chlorination machine is a device that uses an electric current to convert seawater into a powerful disinfectant called sodium hypochlorite. This sanitizer is commonly used in marine applications to treat seawater before it enters vessel ship’s ballast tanks, cooling systems and other equipment. During electrolysis, seawater is pumped through an electrolytic cell containing electrodes made of titanium When a direct current is applied to these electrodes, it causes a reaction that converts salt and seawater into sodium hypochlorite and other byproducts. Sodium hypochlorite is a strong oxidizing agent that is effective in killing bacteria, viruses and other organisms that may contaminate a ship’s ballast or cooling systems. It is also used to sanitize seawater before it is discharged back into the ocean. Seawater electro-chlorination is more efficient and requires less maintenance than traditional chemical treatments. It also produces no harmful by-products, avoiding the need to transport and store hazardous chemicals on board.
Overall, seawater electrolysis chlorination machine is an important tool for protecting the seawater using system, pump, machine.


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