METHOD FOR PRODUCING ALKALINE METAL HYDORXIDE

• Main Authors: KESKITALO, ERKKI M, SUONPERAE, TIMO K, UKKONEN, KEIJO A
• Format: Patent
• Language: English; French
• Published: 14.09.1993
• Edition: 5
• Subjects: APPARATUS THEREFOR; CHEMISTRY; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; COMPOUNDS THEREOF; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The invention concerns a method for producing an alkali metal hydroxide by a chlor-alkali. electrolysis (1), wherein an alkali metal chloride solution is electrolyzed in order to form alkali metal hydroxide, chlorine and hydrogen, wherein at least a part of the alkali metal chloride used in the electrolysis is prepared by neutralizing (2) an alkali metal carbonate with chlorine or hydrogen chloride. The invention concerns a method for producing an alkali metal hydroxide by a chlor-alkali electrolysis (1), wherein an alkali metal chloride solution is electrolyzed in order to form alkali metal hydroxide, chlorine and hydrogen, wherein at least a part of the alkali metal chloride used in the electrolysis is prepared by neutralizing (2) an alkali metal carbonate with chlorine or hydrogen chloride.