Electrolytic cell

A filter press type electrolytic cell comprising:

• a frame for a first catholyte compartment comprising:
• a first lower hollow member,
• a first upper hollow member,
• the first lower and upper hollow members having the same cross sectional shape,
• a first left cathode and a first right cathode joining together the first lower hollow member and the first upper hollow member to form a first catholyte compartment therebetween,
• the first lower hollow member having apertures in its surface disposed between the first left and the first right cathodes,
• the first upper hollow member having apertures in its surface disposed between the first left and the first right cathodes,
• a frame for a second anolyte compartment comprising:
• a second lower hollow member,
• a second upper hollow member,
• the second lower and upper hollow members having the same cross sectional shape,
• a second left anode and a second right anode joining together the second lower hollow member and the second upper hollow member to form a second anolyte compartment therebetween,
• the second lower hollow member having apertures in its surface disposed between the second left and the second right anodes,
• the second upper hollow member having apertures in its surface disposed between the second left and the second right anodes,
• a frame for a third catholyte compartment comprising:
• a third lower hollow member,
• a third upper hollow member,
• the third lower and upper hollow members having the same cross sectional shape,
• a third left cathode and a third right cathode joining together the third lower hollow member and the third upper hollow member to form a third catholyte compartment therebetween,
• the third lower hollow member having apertures in its surface disposed between the third left and the third right cathodes,
• the third upper hollow member having apertures in its surface disposed between the third left and the third right cathodes,
• the first lower and upper hollow members, the second lower and upper hollow members and the third lower and upper hollow members having the same cross sectional shape,
• the second lower hollow member being aligned with and disposed between the first lower hollow member and the third lower hollow member,
• the second upper hollow member being aligned with and disposed between the first upper hollow member and the third upper hollow member,
• a first diaphragm disposed between the first right cathode and the second left anode but contacting neither the first right cathode nor the second left anode,
• the first diaphragm contacting the second lower and upper hollow members and gaskets which contact the first lower and upper hollow members,
• a second diaphragm disposed between the second right anode and the third left cathode but contacting neither the second right anode nor the third left cathode,
• the second diaphragm contacting the second lower and upper hollow members and gaskets which contact the third lower and upper hollow members.