Zero Gap Ion-Exchange Membrane Electrolyzer

The zero gap modification technology is for ion-exchange membrane electrolyzer, and its major purpose is to reduce the distance between anode and cathode, thereby maintaining relatively low cell voltage under high current density.

Significance
1. It takes a short time to finish the zero gap modification process, and the service life is very long.
2. With the help of this technology, the internal circulation of the electrolyzer is effectively enhanced, resulting in a more uniform current distribution.
3. After modification, if the current density is equal to 6kA/m2 or even higher, the low cell voltage could be maintained within the entire service life.

Features
The key procedure is adding elastic mesh and activated mesh onto the existing cathode. Due to the good elasticity, the activated cathode mesh, the activated anode mesh and the membrane are very close to each other, forming the zero gap effect.

Our elastic mesh is of corrugated structure, and the main raw materials are imported to ensure its quality, stability and life span. Based on the Japanese technology, our zero gap modification receives positive feedbacks in Jiangsu, Hunan, Shandong, Sichuan and other places.

Asahi Kasei Electrolyzer: 166 cell/set
Before modification: 3.36 V (12.5kA, 32%NaOH, 88℃)
After modification: 3.01V (12.5kA, 32%NaOH, 84℃) with Dupont 982 membrane

BiTAC Electrolyzer: 68 cell/set
Before modification: 3.4V (15.5kA, 32%NaOH, 88℃)
After modification: 3.0V (15.5kA, 32%NaOH, 86℃) with Dupont 2030 membrane

MGC-22 Electrolyzer: 22 cell/set
Before modification: 3.75V (3.5kA/m2, 32%NaOH, 89℃)
After modification: 3.08V (4kA/m2, 32%NaOH, 84.7℃) with Dupont 966 membrane

DD350 Electrolyzer: 38 cell/set
Before modification: 3.6V (3.3kA/m2, 32%NaOH, 89℃)
After modification: 3.05V (3.5kA/m2, 32%NaOH, 83℃) with Dupont 982 membrane

UHDE Electrolyzer: 118 cell/set
Before modification: 3.35V (4.5kA/m2, 32%NaOH, 88℃)
After modification: 3.03V (5kA/m2, 32%NaOH, 83℃) with Dupont 2030 membrane

Aside from these cases, the zero gap modification also shows outstanding effect for other electrolyzers, such as F2, B1, F1, INEOS, etc.