Maintenance free long life electrolysis anti-soil apparatus

Abstract

The invention belongs to the electrochemical electrolytic antifouling field and relates to a long-service-life maintenance-free electrolytic antifouling device which is suitable for being used in seawater; the main body of the device comprises a changeable direct current (DC) electrolytic power supply, an electrolytic anode, a nickel alloy cathode, a time relay, an electrolytic cell shell and a cable; the DC electrolytic power supply can output different directional current, and the time and size parameters thereof are set by a panel or a computer; the electrolysis anode is a metal platinum coating or a mixing metal oxide coating; when the electrolysis anode is electrolyzed over 30 days under various seawater environments, the current efficiency can not be reduced significantly; the cathode conducting the current uses a smooth flat nickel alloy material; the direction for the current leading to an electrolytic cell is switched once per 5 to 30 days; and the reverse current leading to the electrolytic cell every switch is 1 to 10 minutes and the current density is 10 to 100A / m<2>. The invention has the advantages of reliable principle, simple technology process, low cost, good antifouling effect, and long service life of equipment.

Description

Technical field: [0001] The invention belongs to the field of electrochemical electrolysis antifouling, and relates to a maintenance-free long-life electrolytic antifouling device suitable for use in seawater. Background technique: [0002] At present, the direct electrolysis of seawater to produce hypochlorite to prevent marine fouling and fouling on cooling systems, piping systems and key components used in seawater is not only safer and more economical than traditional methods of adding chlorine , And the device used is relatively simple. However, due to the many impurities in the seawater, many problems have been brought to the implementation of this process. It is well known that in addition to sodium chloride, the raw material for generating hypochlorite, seawater also contains some impurity ions that interfere with the seawater electrolysis process. These impurity ions will enter the electrolysis cell and form harmful deposits on the electrodes. Under normal conditions, ...

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Problems solved by technology

However, the results of the above-mentioned method are unsatisfactory, and there are disadvantages such as insignificant use effect and difficult control of the technological process; there are also disadvantages that the method of mechanical removal is expensive and time-consuming; the pickling method will cause Corrosion problems and so on; Moreover, these existing cleaning methods have to stop the battery work; in addition, the method of using sand filters is too costly; and the mixed seawater method needs to add a suitable reactor and calculate the mixing amount reasonably, and the deployment is relatively expensive. Difficult and impossible to eliminate Mn 2+ Impact

Therefore, the existing methods generally have the disadvantages of complex process, high cost of dirt removal, low efficiency, and difficulty in adapting to ideal results in various occasions.

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