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Cell, anode and cathode, upgrading and modification

Home Products product Chlor-Alkali Process Process Cell, anode and cathode, upgrading and modification
Cell, anode and cathode, upgrading and modification

Cell, anode and cathode, upgrading and modification

We specialize in the repair, refurbishment and recoating of membrane cells, manufacturing and re-engineering of membrane cells, as well as supply of various electrolyzer spare parts for our customers. By using the latest energy-saving modifying technology, we have upgraded various types of electrolyzer.

To improve the performance of your plant, we offer a range of services which significantly reduce the energy consumed per metric ton of NaOH. These upgrades or retrofits can be carried out for an entire cell room or individual electrolyzers. In the latter case, we make maximum use of the existing equipment in your cell room.

Cell, anode and cathode, upgrading and modification

Cell is separated by a partition wall into two compartments, namely Anode compartment and cathode compartment.

The inner wall of the Anode compartment is made by titanium to give resistance against chlorine and the inner wall of the cathode compartment is made by nickel to give resistance against caustic soda.

Na+ or (K+) can go through the cation-selective exchange membrane directionally, electric current lead to unit cell and then cathode terminal cell through anode terminal cell, it conduct the electricity in series.

Ribs, on which the anode and the cathode are welded, are fixed on each side of the partition wall by welding. Each compartment has two nozzles for inlet and outlet of electrolyte. The arms are bolted on both sides of the cell and the cell is hanged on the side bars by the arms.

Six characteristics of unit cells in bipolar zero-gap electrolyzer technology:

– Uniform distribution of brine (Anode circulation system)

– Adequate gas-liquid separation inside cell (New gas-liquid separation and delivered type structure)

– Zero-gap structure (Zero gap electrolyzer, cell-voltage decreased remarkably)

– Ti-Pd alloy sealing for anode surface

– Stainless steel external frame

– Easy to install and repair (Filtered press tightening)

Cell properties of bipolar zero-gap electrolyzer

– Gas-liquid separation and outlet structure improved: adequate gas-liquid separation, avoiding gas-liquid gathering and outlet surge flow

– Gas-liquid circulation structure improved: avoiding partial over-temperature of membrane and large concentration difference.

– Cathode buffer structure: anti-corrosion property improved; better bounce-back effect; smaller membrane intensity of pressure.

– Unique cathode fixation structure is good for smooth outflow of gas-liquid and also intensify conductivity.

– Ionic membrane improving operating environment of electrolyzer=>more stable performance=> reducing power consumption

Upgrading and modification of membrane cells:

Upgrading and modification of membrane cells:

At our facility, we specialize in the refurbishment of membrane cells, offering expertise in repair, recoating, and modification of a wide range of membrane cells available in the market, such as UHDENORA, Denora, Asahi Kasei, Asahi Glass, etc.

This ensures safe and stable operation of the electrolyzers after modification, and eliminates possible damage to the membrane during operation. The performance of the modified zero- gap cells is superior to the initial performance of original one, resulting in substantial energy savings.

Additionally, we offer new cathodes, anodes, and a wide range of electrolyzer spare parts for the electrochemical industry.

Indicators after modification:

1- Current density improvements of 1.0 kA/m² after modification

2- Average voltage reductions of 200mv after modification

3- Power drain reductions of 150kwh after modification

4- 22% improvements in yields after modification

 

We provide customers with upgrading technology service of caustic soda devices.  Comprehensive technical indicators have reached the international advanced level.

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