Thyssenkrupp Uhde Chlorine Engineers (italia) S.r.

Thyssenkrupp Uhde Chlorine Engineers S.r.l.

Antonius Jacobus Gerardus Manders

Sami Petteri Pelkonen

Jacoba Cornelia Petronella Adriana Oonincx

Massimo Giosafatte Borghesi

The invention provides a process for producing chlorine, alkaline metal hydroxide, and hydrogen which comprises the following steps: (a) preparing a brine by dissolving an alkaline metal chloride source in water; (b) removing alkaline precipitates from the brine prepared in step (a) in the presence of hydrogen peroxide by means of a filter of active carbon, and recovering the resulting brine; (c) subjecting at least part of the resulting brine as obtained in step (b) to an ion-exchange step; (d) subjecting at least part of the brine as obtained in step (c) to a membrane electrolysis step; (e) recovering at least part of the chlorine, alkaline metal hydroxide, hydrogen, and brine as obtained in step (d); (f) subjecting at least part of the brine as recovered in step (e) to a dechlorination step; and (g) recycling at least part of the dechlorinated brine obtained in step (f) to step (a).

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Huissen, Netherlands

Antonius Jacobus Gerardus Manders