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Archive for the Corrosion & Fouling Control Systems Category

Sunrui Impressed Current Anodes

When metal-electrolyte corrosion system is cathodically polarized, the potential moves in an electronegative direction. The polarization lowers the potential difference, ηa, between the anode and cathode areas, causing a reduction in corrosion reaction and the corrosion rate. This is called Cathodic Protection Effect. The method of taking advantage of cathodic protection effect to reduce corrosion of metallic structures is call cathodic protection.

Current flows onto the structure from an external anode, and provides electrons for reduction reactions of depolarizers at the metal surface, and oxidization reaction of metals will be restrained as a result. When the oxidation reaction of metals ceases, only cathodic reaction of depolarizers occurs at the metal surface.

There are two methods of providing cathodic protection to a structure: Galvanic anode system, and impressed current system.



Sunrui Sacrifical Anodes


Alumicum Alloy Anodes
Sacrificial Anodes Used on Ship Hull
Sacrificial Anodes Used in Ship Ballast Tank
Sacrificial Anodes Used for Harbor Installations and Offshore Structures
Round-Disk Sacrificial Anodes Used for Seawater Cooling System
Sacrificial Anodes Used for The Inside of Storage Tanks

Zinc Alloy Anodes
Zinc Alloy Anodes Used on Ship Hull
Zinc Alloy Anodes Used in Ship Ballast Tank
Zinc Alloy Anodes Used for Harbor Installations and Offshore Structures
Round-Disk Zinc Alloy Anodes Used for Seawater Cooling System

Magnesium Alloy Anodes
Magnesium Alloy Anodes Used for Underground Pipelines,the Outside Bottom of Tanks and Other Underground Metallic Structures



Sunrui Electrolytic Sodium Hypochlorite Generation


Compared with liquid chlorine and sodium hypochlorite products on the market, the directly generating fresh and highly active sodium hypochlorite technology by electrolyzing seawater(or brine)without diaphragm not only has the advantages of low running cost and more efficient chlorine sterilization capacity, but also avoid the second pollution to the environment and the shortcomings of tending to hurt operators in the procedure of shipping, storage and application. At present, with the environment protection awareness of citizens becoming more and more strengthened, the new technology of generating sodium hypochlorite with electrolyzing seawater has been developed quickly and applied extensively.