Pem Electrolyzer Stack

Product Details

 

1.Small volume

• High operating current density (1.5~3A/cm²)


• Thickness of the core area of the tank less than 1m


• Skid-mounted integrated auxiliary control system

2.High efficiency

• DC power consumption below 4.3 kWh/Nm³


• Thermal efficiency higher than 75%


• Preferred PEM membrane electrodes of international leading level

3.Strong expandability

• Compatible assembly program


• Designed to meet the needs of different tank parameters


• Skid-mounted platform integration

4.Fast response

• Duration of a hot start: 5 seconds, duration of a cold start: less than 300 seconds


• Adaptable to load variations of 5-120%


• Verified cyclic start/stop performance and life time

5.Ultra-safe

• Self-developed dual-wire sealing design program


• Multi-gas sensor monitoring and alarm interlock


• Pressure, temperature parameters and hydrogen production circuit logic control

 

 

1. Efficient Energy Utilization

In addition to its focus on productivity, this electrolyzer prioritizes energy efficiency. With a DC power consumption of merely 4.3kWh/Nm³, it significantly outperforms traditional models, thereby reducing operational costs and exemplifying a commitment to sustainability.

 

2. Elevated Hydrogen Purity

Prior to purification, hydrogen purity exceeds 99.9%, escalating to over 99.999% post-purification. Such high-purity hydrogen is indispensable for applications in fuel cells and various other sectors.

 

3. Consistent Operational Parameters

3.1 Operating Pressure: Maintaining a steady 3.0 MPa working pressure ensures that the produced hydrogen is pressurized accordingly, accommodating diverse requirements and minimizing the need for additional pressurization costs.

3.2 Operating Temperature: Operating flawlessly within a 70±5℃ temperature range, the electrolyzer excels in stability and adaptability.

 

4. Wide Power Fluctuation Tolerance

With a power adjustment range spanning from 5% to 110%, the electrolyzer can operate smoothly despite significant variations in the power supply.

 

5. Rapid Start-Up Technology

Minimal Hot and Cold Start Times: Cold starts require less than 5 minutes, reducing production downtime, while hot starts take merely 5 seconds, swiftly optimizing equipment performance.

 

Name	Parameter
Hydrogen production capacity (Nm3/h)	200
Peak hydrogen production capacity (Nm3/h)	240
DC power consumption (kWh/Nm3)	≤4.3
Hydrogen purity (Before purification)	≥99.9%
Electrolyzer Enclosure– W x D x H(m)	0.8x0.6x1.5
Operating pressure (MPa)	3 . 0
Operating temperature (℃)	70±5
Ambient Temperature (℃)	5~40
Power consumption range	5-1 2 0 %
Cold start time (Minute)	≤5
Hot start time (Second)	5
Service life (Year)	≥5
Electrolyte	H2O
Separation Unit
Rated oxygen processing capacity	100 Nm3/h
Oxygen purity (rated operating conditions)	>99.8%(0.2 MPa);>98.5%(3 MPa)
Oxygen outlet temperature(℃)	70±5
Purification Unit
Hydrogen purity (After purification)	≥99.999%
Dew point of hydrogen	-70℃
Hydrogen outlet temperature	Ordinary temperature

 

Safe Process

Safety measures:

lLevel 1: No leakage of hydrogen → safety features of the equipment, involving selection of parts, safety monitoring, hazop/LOPA analysis, and SIL rating

lLevel 2: Real-time detection of any leakage and prevention of further leakage → safety control system design, involving monitoring in the entire plant

lLevel 3: No accumulation of gas in case of any leakage → ventilation engineering design for safety

lLevel 4: Ignition sources eliminated → no-smoking and other safety management principles

lLevel 5: Minimum impacts on the surroundings in case of any fire accident → approval and design of safety facilities such as explosion-proof walls and safety distance

 

Safety features of the equipment

Selection of parts:

316L/carbon steel Ni-coated alkali-resistant material is used for the alkali liquid, and degreased stainless steel used for the oxygen end with a restrictive flow orifice plate to prevent any safety hazard

Explosion-proof classification for electrical units: IIC T4

Valves: 3-piece welded ball valve with less possible leakage points.

Mass flow meters for hydrogen, and electromagnetic flow meters for alkali liquid.

 

Safety monitoring:

To prevent over-temperature and maintain the liquid level balance, pressure regulation, upgraded purity measures, and cell voltage monitoring for the electrolyzer

PLC monitoring and control system, two of three instruments used in the SIS system, and GDS system

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