Diaphragm
cell technology is one of the electrolytic process adopted
in chlor
alkali industries. In diaphragm cell process, a
permeable asbestos based diaphragm is used to separate
the anode products from the cathode products.
Saturated brine enters the anode compartment of the
cell where chlorine gas is liberated. The diaphragm
allows the migration of sodium ions only from the anode
chamber to the cathode chamber.
The collected chlorine from anode chamber is purified
by liquefaction & evaporation. Commercial caustic
soda is produced from the caustic brine collected from
the cathode chamber.
Two types mixed metal
oxide ( mmo ) coated titanium diaphragm cell anodes
are available :
