PEM electrolyzers
Proton-exchange-membrane electrolyzers of 200 and 500 Nm³/h, 5 – 130 % load range.
PEM water electrolysis equipment uses direct current to split pure water into hydrogen and oxygen. After separation and purification, high-purity hydrogen that meets customer needs is obtained. It consists of the power supply, control system, electrolyzer, separation and purification unit and auxiliary equipment. CRRC has delivered China's largest single-unit PEM electrolyzer (500 Nm³/h).
200 – 500 Nm³/h
≤ 4.3 kWh/Nm³
5 – 130 %
3.0 MPa
Features
- Load adjustment range 5 – 130 %, ideal for fluctuating renewable energy
- Millisecond-level response of the power supply, second-level response of the electrolyzer
- Real-time inspection of cell temperature and voltage, safety interlocks
- DC consumption ≤ 4.3 kWh/Nm³ H₂, comprehensive consumption ≤ 4.5 kWh/Nm³ H₂
- Working pressure 3.0 MPa, compact footprint (750 × 750 mm)
Technical parameters
PEM electrolyzer
| Model | PQ-200 | PQ-500 |
|---|---|---|
| Rated hydrogen production | 200 Nm³/h | 500 Nm³/h |
| Rated oxygen production | 100 Nm³/h | 250 Nm³/h |
| DC power consumption | ≤ 4.3 kWh/Nm³ | ≤ 4.4 kWh/Nm³ |
| Current density | 20 000 A/m² | 30 000 A/m² |
| Operating pressure | 3.0 MPa G | 3.0 MPa G |
| Working temperature | 65 ± 5 °C | 65 ± 5 °C |
| Minimum load rate | ≥ 10 % | ≥ 10 % |
| Load adjustment range | 5 – 130 % | 5 – 130 % |
| Electrolyzer size | 750 × 750 × 540 mm | 750 × 750 × 950 mm |
| Electrolyzer weight | 1350 kg | 1850 kg |
Other CRRC equipment
