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Nippon Steel Corp
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Nippon Steel Corp
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Application filed by Nippon Steel CorpfiledCriticalNippon Steel Corp
Priority to JP12844576ApriorityCriticalpatent/JPS5353600A/en
Publication of JPS5353600ApublicationCriticalpatent/JPS5353600A/en
PURPOSE: To efficiently remove black impurities in an apparatus for producing ammonium sulfate from coke oven gas by attaching the impurities in ammonium sulfate mother liquor in a mother liquor circulating line to coal tar at a fixed temp.