Seawater-electrolysis chlorine producing electrolytic bath used for resisting manganese pollution

Abstract

The invention discloses a seawater-electrolysis chlorine producing electrolytic bath used for resisting manganese pollution. The seawater-electrolysis chlorine producing electrolytic bath comprises a bath body, a cover plate, cathodes, reverse electrolytic anodes, reverse-electrolysis-resisting oxide anodes and a conducting rod; the bath body and the cover plate are buckled to form a shell, the cathodes and the anodes are arranged in a cavity inside the shell at intervals through the conducting rod, the multiple layers of reverse-electrolysis-resisting oxide anodes are arranged at equal intervals, and plane normals of the reverse-electrolysis-resisting oxide anodes are horizontally arranged; the cathodes and the reverse electrolytic anodes are alternatively arranged between the adjacent reverse-electrolysis-resisting oxide anodes at intervals, and the cathodes and the anodes are connected with the conducting rod; one end of the conducting rod is led out of the shell and is connected with an electrolysis power source and a controller; when the content of Mn2+ in seawater ranges from 0.1 ppm to 50 ppm, positive electrolysis is carried out for 8 h to 12 h, reverse electrolysis is carried out for 10 min to 60 min, and the electrolytic efficiency is maintained to be above 85%; and the seawater-electrolysis chlorine producing electrolytic bath can be used for an electrolysis chlorine producing antifouling system containing manganese seawater, and the manganese pollution problem of electrolytic bath oxide anodes is solved.

Description

technical field [0001] The invention relates to an electrolytic cell for producing chlorine by electrolyzing seawater for anti-manganese pollution, and belongs to the field of marine environment protection equipment manufacturing. Background technique [0002] Electrolysis of seawater to produce sodium hypochlorite to prevent marine organisms from fouling the cooling pipeline of coastal power plants has become a widely used and effective antifouling technology at home and abroad. According to the research of the US David Taylor Naval Ship Research and Development Center, when Mn 2+ Content exceeding 0.02mg / L can lead to "poisoning" of the anode coating. The anode shows the formation of non-conductive MnO upon energized electrolysis 2 The deposition layer increases the tank pressure, increases energy consumption, and reduces current efficiency, which leads to an increase in the anode current density, rapid anode failure, and a greatly reduced anode service life. [0003] C...

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Problems solved by technology

[0004] The present invention provides an electrolytic cell for producing chlorine by electrolyzing seawater for anti-manganese pollution, which solves the problems in the prior art that the current efficiency of the electrolytic cell is reduced and the service life of the anode is shortened due to manganese poisoning in the oxide anode.

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