Process and apparatus for electrolysis of hydrochloric acid

Patent · Tue Dec 02 00:00:00 EST 1980

OSTI ID:6603871

Minz, F; Wiechers, H

In the production of chlorine and hydrogen from hydrochloric acid by electrolysis in an electrolysis cell comprising a plurality of vertically arranged bipolar electrodes, a diaphragm arranged between each two electrodes to divide the electrolysis chambers formed between them into an anolyte chamber and a catholyte chamber, and outlet and inlet devices for the electrolyte, the improvement which comprises electrolyzing the hydrochloric acid in at least two successive stages, and degassing the hydrochloric acid. Advantageously the hydrochloric acid moves from bottom to top, first through an upper stage and then through a lower stage. As a result less electrode surface is needed, a higher current density and/or voltage is possible so existing apparatus can be modified to connect more bipolar electrodes in series.

• Assignee: Bayer Ag (Germany, Federal Republic Of)
• Patent Number(s): US 4236983
• OSTI ID: 6603871
• Resource Relation: Patent Priority Date: Priority date 14 Apr 1978, German, Federal Republic of (F.R. Germany)
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHLORINE
PRODUCTION
ELECTROLYTIC CELLS
DESIGN
HYDROCHLORIC ACID
ELECTROLYSIS
HYDROGEN PRODUCTION
ELEMENTS
HALOGENS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LYSIS
NONMETALS
080101* - Hydrogen- Production- Electrolysis
400400 - Electrochemistry