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Chlor Alkali Membrane DF988 high mechanical strength membrane(PFSA PEM)
Mainly for electrolysis NaCL,ammonium persulfate and sodium chromate etc.
Leading of China
PERFLUOROSULFONIC ACID PROTON EXCHANGE MEMBRANE(PFSAPEM)
DF988 high mechanical strength membrane
At present, the DF988 membrane has been applied successfully by three chloro-alkali
Enterprises. And the details are listed below.
Enterprises |
Cell Type |
Current Density kA/m2 |
Cell voltage V |
NaOH % |
Cl2 % |
H2/Cl2 % | Current efficiency % |
Time to start-up |
HuangHua |
NBH2.7 |
4.5 |
3.23 |
32 |
>98 |
0.03 |
>95 |
2010-5-14 |
Dongyue |
ZMB2.7 |
3.5 |
3.03 |
31 |
>97 |
none |
>95 |
2010-6-30 |
Changzhou |
F2-563 |
3.235 |
3.18 |
32 |
>97 |
none |
>95 |
2010-8-20 |
Laboratory Test Performance of Dongyue series Membranes*
membrane |
Current density(kA/m2) |
Cell voltage (V) |
Current efficiency (%) |
kWh/tNaOH |
DF988 | 3.5 | ~3.2 | >95% | ~2250 |
DF2801 | 4.5 | 3.0-3.2 | >95% | ~2150 |
*All test performed in lab cells with 50 effective area, at 3.5 or 4.5kA/m2 current density, 32% NaOH,
205g/L NaCl concentration (outlet), 85-90°C electrolyte temperature, 1mm elelctrode gap and activated cathode.