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Sea Water Electrolysis Sodium Hypochlorite Generator for Cooling Tower
Sea Water Electrolysis Sodium Hypochlorite Generator is used electrolytic principle, it works through by on-site electrolysis of seawater to produce sodium hypochlorite solution, and automatically dosing into the feed seawater to eliminate algae and microorganisms, thus prevent the biofouling in the seawater system (such as cooling circuits, intake pipes and heat exchangers).
Capacity:
10kg/hOutput Flow:
5000L/hControl:
Automatic controlChlorine concentration:
2000ppmAdditive:
Sea waterSalt Consumption:
-Power Consumption:
4.5kw/kg Cl2Application:
Power plant, cooling tower, sea water farmingSea Water Electrolysis Sodium Hypochlorite Generator for Cooling Tower
Working Principle
Sea Water Electrolysis Sodium Hypochlorite Generator for Cooling Tower is generating sodium hypochlorite through the electrolysis of seawater is a cost-effective and safe method to eliminate algae and microorganisms and prevent the biofouling. Sodium hypochlorite is a versatile oxidizing agent that can be generated and used on-site.
• Basic reactions occurring in the electrolytic cell:
At the anode, chlorine gas is evolved:
2Cl- = Cl2 + 2e- _________________ ①
At the cathode, hydrogen gas is evolved:
2H+ + 2e- = H2 __________________ ②
The Cl2 evolved at the anode dissolves in the electrolyte to form HCl and HOCl. Since there is no membrane between the anode and the cathode, the H2 evolved at the cathode and generates OH-, which combines with the H+ produced by dissociation to form H2O and NaOCl, thus completing the homogeneous secondary chemical reaction. The overall reaction is:
NaCl + H2O → NaOCl + H2
Industrial Biofouling Control
Purevita seawater electrochlorination systems are a reliable and economic solution for industrial biofouling control. The electrochlorination process is simple and straight forward, combining three common consumables (salt(sea water), water and electricity) to generate a disinfecting agent. SANILEC systems can be provided in any capacity to meet customer and application-specific needs.
On-site generation of sodium hypochlorite is an economical and safe method to produce a powerful biocide and disinfecting agent for use in industrial applications. When injected into the cooling water circuits of electric power stations or industrial plants, on-site generated sodium hypochlorite provides efficient protection to the equipment against the growth of micro and macro organic fouling. This occurs without the undesirable side effects of commercial hypochlorite, such as the build-up of hard deposits by reaction of excess alkalinity with the substances dissolved in water or the safety hazard connected with the transportation, storage and handling of chlorine gas. The technology eliminates dependency on outside suppliers and the heavy costs of purchased commercial products.
Features & Benefitstures & Benefits
System Specifications
| Model | GTH-1000 | GTH-2000 | GTH-5000 | GTH-10000 | GTH-20000 | GTH-40000 |
| Available chlorine(kg/h) | 1 | 2 | 5 | 10 | 20 | 40 |
| NaClO Output flow(L/h) | 500 | 1,000 | 2,500 | 5,000 | 10,000 | 20,000 |
| NaClO concentration(mg/L) | 2,000 | 2,000 | 2,000 | 2,000 | 2,000 | 2,000 |
| Power supply(kw) | 6 | 12 | 30 | 60 | 120 | 240 |
| Voltage | 380V/50hz three phase | 380V/50hz three phase | 380V/50hz three phase | 380V/50hz three phase | 380V/50hz three phase | 380V/50hz three phase |
| Additive | 2.5~3% | 2.5~3% | 2.5~3% | 2.5~3% | 2.5~3% | 2.5~3% |
| Feed water flow (L/h) | 500 | 1,000 | 2,500 | 5,000 | 10,000 | 20,000 |
| Salt Consumption | 3.5kg/kg Cl2 | 3.5kg/kg Cl2 | 3.5kg/kg Cl2 | 3.5kg/kg Cl2 | 3.5kg/kg Cl2 | 3.5kg/kg Cl2 |
| Power consumption | 5kw/kg Cl2 | 5kw/kg Cl2 | 5kw/kg Cl2 | 5kw/kg Cl2 | 5kw/kg Cl2 | 5kw/kg Cl2 |
| Cell arrangement | Horizontal | Horizontal | Horizontal | Horizontal | Horizontal | Horizontal |
| H2 production amount | 0.35m3/kg Cl2 | 0.35m3/kg Cl2 | 0.35m3/kg Cl2 | 0.35m3/kg Cl2 | 0.35m3/kg Cl2 | 0.35m3/kg Cl2 |
| Number of Cell | 1 pcs | 2 pcs | 2pcs | 2pcs | 4pcs | 4pcs |
| Operation pressure | 2~4bar | 2~4bar | 2~4bar | 2~4bar | 2~4bar | 2~4bar |
| Feed water temperature | 15~25℃ | 15~25℃ | 15~25℃ | 15~25℃ | 15~25℃ | 15~25℃ |
| Cleaning mode | Acid washing | Acid washing | Acid washing | Acid washing | Acid washing | Acid washing |
Application
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Electrolyser(electrodes or electrolysis cell) is designed for producing 8000ppm sodium hypochlorite through 0.3% brine, which is stable and safty running onsite. The electrodes is made of pure Titanium, with ruthenium & iridium oxide coating which ensure over 5 years coating life, over 18 years titanium base material, reduce the chlorine evolution potential and electricity consumption.
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Platinum-coated titanium electrode is a typical Dimensionally Stable Anode. It is a composite electrode constructed with a metallic titanium substrate as the base, upon which a thin layer of platinum (often not pure platinum but rather an alloy or mixture of platinum and other precious metals) serving as the active catalytic layer is applied onto its surface through specialized processes such as thermal decomposition or electroplating.
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The Purevita sodium hypochlorite generator generates a 0.8 % sodium hypochlorite solution through the electrolysis of brine, consuming only water, salt and electricity. By producing hypochlorite on-site and on-demand, the system eliminates concerns associated with transportation and storage of chlorine gas or commercial sodium hypochlorite solutions, making it ideal for any medium to large scale application requiring chlorination.
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The sodium hypochlorite dosing system is configured with a softened water dilution function todilute the storage concentration of sodium hypochlorite to less than 5%
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The electrolyzer is fed a DC current from the rectifier and electrolyzes the diluted brine into sodium hypochlorite solution. Chlorine evolves at the anode surface, while hydrogen and hydroxide evolves at the cathode surface. The secondary reaction of chlorine, sodium and the hydroxyl ion nets sodium hypochlorite (chlorine bleach) at a 0.8% solution. Below 1%, hypo is classified as a non-hazardous chemical although still a very effective disinfectant. The only by-product, hydrogen, is safely vented into the atmosphere.
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The ozone generation chamber and power cabinet are mounted on the same skid- mounted base. The generation chamber has a horizontal structure, with 1.5 meters of clearance required on both sides of the unit for maintenance, allowing for easy servicing and up keep.
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