Pem Stack Electrolyzer

 

Strong expandability

• Compatible assembly program
• Designed to meet the needs of different tank parameters
• Skid-mounted platform integration

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

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. Enhanced Hydrogen Production Capacity

The PEM electrolyzer boasts an impressive hydrogen production capacity of 200Nm3/h per cell, making it well-suited for large-scale industrial applications and offering robust support for clean power integration.

2. Efficient Energy Utilization

In addition to its formidable productivity, this electrolyzer prioritizes energy efficiency. With a remarkably low DC power consumption of only 4.3kWh/Nm3, it significantly outperforms traditional electrolyzers. This design not only reduces production costs but also underscores a commitment to sustainable development practices.

3. Elevated Hydrogen Purity Standards

Prior to purification, the hydrogen purity exceeds 99.9%, a figure that further elevates to over 99.999% post-purification. Such heightened purity levels are crucial for applications in fuel cells and various other industrial sectors.

4. Stable Operational Parameters

4.1 Consistent Working Pressure: Operating at a stable pressure of 3.0 MPa ensures that the produced hydrogen maintains this pressure, catering to diverse operational requirements and minimizing the need for additional pressurization, thus reducing costs.

4.2 Optimal Operating Temperature: Operating within a temperature range of 70±5℃, the electrolyzer demonstrates exceptional stability and adaptability, ensuring reliable performance across various environmental conditions.

 

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

 

 

 

1. Green Hydrogen Production from Renewable Sources

This electrolyzer excels in producing green hydrogen sourced from large-scale wind and solar power installations. Whether it's from wind farms, solar arrays, or combined wind-solar projects, the electrolyzer effectively mitigates the curtailment of green energy by converting surplus electricity into hydrogen.

2. Transportation Solutions

Thanks to its compact design and exceptional efficiency, this electrolyzer finds practical application in hydrogen refueling stations catering to fuel cell electric vehicles (FCEVs). By delivering a swift and sustainable hydrogen fuel supply, it accelerates the adoption of FCEVs and drives the advancement of clean transportation initiatives.

3. Laboratory and Research Capabilities

Designed to deliver high-purity hydrogen, this electrolyzer serves as a crucial resource for laboratories engaged in hydrogen production research and fuel cell performance testing. By providing a reliable source of hydrogen, it facilitates comprehensive studies on hydrogen production technologies and enables rigorous evaluation of hydrogen fuel cell performance in various experimental settings.

 

SANY Hydrogen Energy Assembly Workshop
The workshop stretches 216 meters long and 72 meters wide, of which three zones cover an area of about 15,000 square meters in total. Zone A is a reserved space for our machine processing line that is planned to be put into use in 2024. Zone B is a hydrogen refueling station assembly line with an annual capacity of 20 sets of hydrogen refueling stations. Zone C is a hydrogen producing equipment assembly line with an annual capacity of 2GW alkaline water electrolyzers. The construction of the entire production line started in January 2023, and was completed and put into use in March 2023, which reflected the speed of SANY and also our advantages in the field of equipment manufacturing.

 

Hydrogen Separation and Purification System Assembly Area

SANY's Hydrogen Separation and Purification System Assembly Area is empowered by our cutting-edge intelligent pipeline design platform, ensuring an impressive annual production capacity exceeding 160 sets. This assembly space comprises a final assembly unit and a pipeline prefabrication unit. The final assembly unit efficiently accommodates the assembly of up to 5 sets of separation and purification systems simultaneously. Meanwhile, the pipeline prefabrication unit undertakes tasks such as blanking, bending, welding, and prefabrication of pipelines. With 5 separation system assembly stations, 5 purification system assembly stations, dedicated pipeline welding stations, pipeline slope cutting and bending stations, and air tightness test stations, our production line achieves a unified process from pipeline prefabrication through to end-of-line testing. This streamlined approach enables us to deliver a complete separation and purification system within just 10 days.

Pipe Bender: Our facility utilizes two sets of CNC benders capable of bending pipes ranging from 0 to 40 mm in diameter with exceptional accuracy of 0.05 mm. We are currently advancing our bending techniques to accommodate larger pipe diameters, slated for implementation in 2024.

Automatic Pipeline Cutting and Beveling Line: This cutting-edge line integrates a pipeline feeding system, hydraulic rotation system, length measurement system, cutting and beveling machine, laser coding system, discharging system, and material retrieval system. It executes the entire pipeline processing procedure automatically, from raw material intake to finished pipelines. Operating with a precision of less than 0.5 mm, it enhances efficiency by over 3 times and can handle pipes up to Φ350mm in diameter.

Automatic Pipe Welding Machine: Our state-of-the-art welding machine automates the welding process for straight pipes, bent pipes, and tees, within a thickness range of 2 to 10 mm and diameter range of 0 to 400 mm. Utilizing argon arc welding technology, it achieves welding speeds three times faster than manual methods while ensuring superior weld quality. With a flaw detection first-pass rate exceeding 99%, and utilizing a German-imported weld cleaning machine, our welding process delivers impeccable results while remaining environmentally friendly, producing no waste liquid.

 

Electrolyzer Assembly Station

The Electrolyzer Assembly Station is purpose-built for the final assembly of electrolyzers, featuring 5 sets in total. Each set employs a flexible design to meet production needs of up to 3,000 Nm3/h. Equipped with hydraulic hoisting platforms and screw drive lifters, each assembly station facilitates assembly tasks at heights ranging from 0 to 7.5 meters. By utilizing positioning pins and sophisticated 5-line laser leveling techniques, precise stack assembly outcomes are ensured, with vertical deviations kept within 5 mm. An 18-axis hydraulic tensioner streamlines the tightening process, eliminating inefficient actions such as frequent disassembly and assembly of tensile screws. This not only reduces employee workload but also doubles efficiency, contributing to seamless electrolyzer assembly.

Vertical Stacking Control Process for Large Electrolyzers: Our control process enables precise stacking of bipolar plates in both vertical and circumferential directions, maintaining a vertical deviation of electrolyzers within 5 mm.

Tightening Process for Electrolyzers: Utilizing an 18-axis tightening process, all parameters of cold tightening, heat tightening, and final tightening are meticulously controlled, ensuring even pole distance control of 0.3 mm and an overall tightening deviation of less than 3 mm.

 

Gasket Cutter

Our Gasket Cutter features an aerospace-grade aluminum honeycomb adsorption panel, coupled with profiling tools, negative pressure vacuum, and infrared calibration for precise gasket fixing and positioning. Utilizing a combination of vibrating and milling cutters, hole, groove, and step surface processing is achieved with an overall accuracy of 0.5 mm.

 

Pipeline Prefabrication Area

The Pipeline Prefabrication Area encompasses pipe cutting, bending, welding, and pre-assembly tasks. Pipe cutting involves the utilization of band saws, beveling machines, and semi-automatic cutting and beveling integrated machines, catering to pipe diameters ranging from 0 to 400 mm. Pipe bending is executed with two sets of CNC bending machines, ensuring bending accuracy of up to 0.05 mm for pipes ranging from 0 to 40 mm in diameter. Pipe welding is facilitated by a fully automatic pipe welding machine, handling welding requirements for various pipe configurations with exceptional speed and quality. Weld seams are treated using a German-imported weld seam cleaning machine, ensuring oxidation resistance without generating waste liquid. Pipe pre-assembly is carried out using specialized combination fixtures, meeting stringent positioning accuracy requirements of 0.5 mm and facilitating offline batch pre-assembly of pipe assemblies.

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