A system and method for hydrogen production coupled with mercury removal from an electrolytic halide salt solution

Abstract

The application provides a system for removing mercury from electrolytic halide salt solution and coupling hydrogen production, which comprises a simulated smoke sub-system, a mercury removal and hydrogen production reaction sub-system, a hydrogen storage sub-system, a mercury recovery and halide salt regeneration sub-system, and a detection sub-system. The application also provides a method for removing mercury from electrolytic halide salt solution and coupling hydrogen production, which comprises generating mercury-containing smoke, electrolyzing the halide salt solution to oxidize elemental mercury in the mercury-containing smoke, obtaining a mercury-containing solution and halide-containing smoke, simultaneously electrolyzing water molecules to generate hydrogen, treating the mercury-containing solution with a precipitant to obtain mercury precipitate and halide salt solution, carrying out halogen removal treatment, acid absorption and dehydration steam treatment on the halide-containing smoke to obtain pure neutral gas, and carrying out carbon adsorption treatment on the pure neutral gas after detecting the mercury content in the pure neutral gas. The system and the method have the characteristics of good mercury removal effect, low cost, no secondary pollution, effective resource recovery and simultaneous hydrogen production, and can be widely applied in the field of air treatment.

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