Bipolar Membrane (BM) Single Element Technology
BM2.7 – Zero-Gap Membrane Electrolysis for Maximum Energy Savings
For nearly 30 years, the BM2.7 single-element series has set benchmarks in Chlor-Alkali electrolysis. With the latest BM2.7 v7 generation, power consumption has been reduced to below 1,960 kWh/t NaOH at 6 kA/m² – combining proven single-element design with an innovative elastic element for full zero-gap operation.
BM2.7 Single-Element Cells
Key Benefits
Enhanced energy efficiency:
- More uniform current distribution to membrane.
- Better release of gas bubbles to reduce any possible stagnation of gas transport inside the cell.
Extended membrane service life:
- Membranes run in optimal contact to ensure zero gap across full active area and increase membrane service life
Maximum operational safety:
- Flooded compartments even in stand-by mode prevent chlorine and hydrogen from mixing.
- Continuous feed and precise gas-liquid separation stabilize pressure and extend membrane life.
Smart Maintenance:
- Decreased assembly time
- Easy cathode electrode replacement
- Improved outlet hose connection
First BM Electrolyzer
Since our first BM electrolyzer in 1989, we have been continuously developing the BM series. We look back on over 30 years of development.
BM2.7v3
BM2.7v3 was the first laser welded cell where internals on the anode side allowed acidified operation.
First Full Zero-Gap Cell
Launch of the first full zero-gap cell with generation 6, introducing pioneering performance improvements. A new V-Shape downcomer is introduced, ensuring an ideal distribution of brine with uniform density and temperature within the anode compartment.
BM2.7v6plus
In 2019, BM2.7v6plus was launched - a full zero-gap cell featuring a flexible elastic element in the proven BM single-element design. The 6plus generation reduced power consumption to below 1,980kWh per metric ton of NaOH at 6kA/m².
Launch BM2.7 v7
The latest-generation BM2.7 v7 offers strong performance and meets customer requirements with numerous innovative enhancements for the improvement of electrolysis processes:
- Power consumption of less than 1.960 kWh/t NaOH, setting a new benchmark.
- Smart maintenance with a decreased assembly time, easy cathode electrode replacement and an improved outlet hose connection.
- Superior resilience due to a simplified cell design and better cathode protection.
Lifecycle Service For BM
We provide tailored lifecycle support – from spare parts and maintenance to complete service packages for BM2.7 electrolyzers.
