Sodium Hypochlorite Generator

Shanghai SCIYEE Water Sci. & Tech. Co., Ltd.has been committed to sodium hypochlorite generators for more than 20 years. It has the technical background of Tongji University. Its products include 0.8% sodium hypochlorite generator in the field of electrolytic brine. The generated 0.8% sodium hypochlorite solution is a safe product with low concentration and cannot be stored. Attenuation, less by-products, and various types of sodium hypochlorite generators are available in the field of electrolysis of seawater.

1. Product description

Name: 0.8% sodium hypochlorite generator

-Product model: NT-L

-Available chlorine concentration: around 8000ppm

-Input power: 380V, 50Hz

-Inlet water temperature: 10℃~27℃

-Inlet water pressure: 0.2~0.4MPa

-Salt consumption: 3.5kg/kg Cl2

-AC power consumption: 4.2kWhAC/kgCl2

-Incoming water quality requirements: municipal tap water

-Equipment area: 2.0mX1.2mX2.6m

2. Equipment principle

The sodium hypochlorite generator is a new type of equipment used to produce NaClO solution on-site. It is suitable for various places that require NaClO for disinfection. Its working principle is: under the action of a certain cell voltage, the sodium chloride solution undergoes a series of electrochemical reactions in the electrolytic cell, eventually generating NaClO solution. The generation process of NaClO can be expressed by the chemical equation as follows:

NaCl+H₂O→NaClO+H₂↑

Electrode reaction:

Anode: 2Cl^--2e^-→Cl₂

Cathode: 2H⁺+2e^-→H₂

Solution reaction: 2NaOH+Cl₂→NaCl+NaClO+H₂O

3. System process description

This system is divided into 5 parts from the perspective of equipment: soft water preparation module (M1), salt dissolving module (M2), dilute brine water distribution system (M3), generator module (M4), sodium hypochlorite storage and hydrogen discharge (M5), dosing module (M6) and pickling module (M7).

Preparation and dosing process

a) The raw water provided by the user is first softened by a water softener, and part of the generated soft water enters the soft water tank for storage; the other part enters the salt-dissolving tank to prepare saturated brine.

b) 3% dilute brine preparation part: ① The soft water in the soft water buffer tank is lifted by the soft water pump into the 3% dilute brine preparation pipeline; ② The saturated brine in the salt-dissolving tank is lifted by the brine pump into the 3% dilute salt water preparation pipeline; ③ Concentrated salt water and soft water Mix and prepare 3% dilute brine in a 1:9 ratio in the pipeline and enter the electrolytic cell.

c) The saturated brine in the salt tank is also used as brine for resin regeneration in the softener.

d) Electrolysis part of the electrolytic cell: ① After 3% dilute salt water enters the electrolytic cell and reaches the full liquid level; ② After the system meets all opening conditions, the rectifier can be turned on to provide cell voltage to the electrolytic cell; ③ 3% dilute salt water undergoes electrolysis reaction in the electrolytic cell Sodium hypochlorite solution and hydrogen gas are produced as a by-product.

e) Sodium hypochlorite storage: The finished sodium hypochlorite solution and by-product hydrogen in the electrolytic cell enter the sodium hypochlorite storage tank through pipelines, and the by-product hydrogen is diluted by a fan to a safe emission concentration and then discharged to the atmosphere through a hydrogen discharge pipe.

f) Sodium hypochlorite dosing: Add the sodium hypochlorite solution in the sodium hypochlorite storage tank to the dosing point through a dosing pump.

4. Product features

Electrolytic tube material: high-strength transparent corrosion-resistant organic glass

Anode material: titanium base + DSA coating

Cathode material: pure titanium

Features:

a. The cathode and anode are fully visible and the electrodes are fully protected.

b. Titanium-copper composite conductor, smaller resistance

c. Horizontal cylindrical electrolyzer, compact and simple

Characteristics of corrosion-resistant and efficient heat exchange equipment

a. Adopt PVC shell and internal titanium tube structure, and seal with special seals;

b. Reasonable internal diversion design to improve heat exchange efficiency;

c. Installed on the second or third electrolytic tank;

d. The equipment is integrated into the generator to reduce the floor space;

e. Achieve heat exchange and cooling purposes through valve switching;

f. No external energy is consumed, and there is a temperature adjustment space of 5°C for the inlet water temperature;

5. Intelligent module

Through the HIM touch screen human-machine interface, various parameter data can be collected and displayed. The automatic recording of operating data and alarm information can effectively help maintenance personnel determine operating status and fault points.

Through the remote intelligent module, online monitoring of all equipment used across the country can be achieved. The program can be modified and optimized online through the 5G network or WIFI network, which can greatly improve the owner's experience and solve problems in a timely manner.