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公开(公告)号：DE59801060D1
公开(公告)日：2001-08-30
申请号：DE59801060
申请日：1998-03-11
Applicant: BASF AG
Inventor： SCHLAEFER DR , MAUSS DR , RAULS DR , BAUMANN DIETER
IPC: C01D1/30
Abstract: Production of crystalline NaOH . 3.5H2O, involves crystallising NaOH.3.5H2O from an aqueous NaOH solution oversaturated with NaOH . 3.5H2O, and removing the crystals using a mechanical solid/liquid separator. The solid/liquid separation occurs under conditions in which crystalline NaOH.3.5H2O can be liberated from the lye residues; the NaCl content of the crystalline NaOH . 3.5H2O being ≤ 100 mg per kg.
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