Device for the separation of mercury from caustic soda in chlor-alkali plants
AssigneeIndustrie De Nora S.P.A.
InventorsGiovanni Meneghini, Raffaello Bertin
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Abstract
The invention relates to a device for breaking the electrical continuity of the stream of caustic soda produced in mercury-cathode chlor-alkali plants. The device is comprised of a vessel internally subdivided into three compartments by two flow-conveying septa, the three compartments being in communication and defining a caustic soda tortuous flow-path allowing the centrifugal deposition of mercury microdroplets released by the upstream amalgam decomposer.
Claims15
A mercury separation device for chlor-alkali plants, comprising a vessel subdivided by two conveying septa into a first caustic product inlet compartment, a second central compartment and a third caustic product outlet compartment, disposed so as to form a tortuous flow-path for the caustic product, the first and the second compartment being connected through a mercury separation zone having a restricted passage section.
A plant for mercury cathode chlor-alkali electrolysis comprising a mercury separation device comprising a vessel subdivided by two conveying septa into a first caustic product inlet compartment, a second central compartment and a third caustic product outlet compartment, disposed so as to form a tortuous flow-path for the caustic product, the first and the second compartment being connected through a mercury separation zone having a restricted passage section.
Dependencies are inferred from the claim text.