Process for preparing diaryl carbonate

A process for preparing diaryl carbonate and utilizing at least part of the process wastewater by increasing the concentration of the wastewater phases containing sodium chloride for the electrolysis by means of osmotic membrane distillation with simultaneous dilution of the sodium hydroxide solutio...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: RECHNER JOHANN, BUTS MARC, BULAN ANDREAS, WEBER RAINER, VANDEN EYNDE JOHAN, TRAVING MICHAEL, OOMS PIETER
Format: Patent
Sprache:eng
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Zusammenfassung:A process for preparing diaryl carbonate and utilizing at least part of the process wastewater by increasing the concentration of the wastewater phases containing sodium chloride for the electrolysis by means of osmotic membrane distillation with simultaneous dilution of the sodium hydroxide solution obtained from the electrolysis for the diaryl carbonate production process (diphenyl carbonate process) is described.