Alectrolysis Alkaline

1200 Nm³/h Alkaline Water Electrolyzer

 

1. Expanded Explanation of Wide Power Fluctuation Range

The extensive power fluctuation range, spanning from 30% to 120%, represents a pivotal advancement in the realm of hydrogen production. This range is meticulously designed to align seamlessly with the intermittent nature of renewable energy sources such as wind and solar power. By accommodating fluctuations in power input, particularly prevalent in renewable energy systems, this technology optimizes the efficiency and reliability of hydrogen production processes. The versatility offered by this wide range ensures uninterrupted operation, even during periods of varying energy availability, thereby enhancing the feasibility and sustainability of hydrogen production through renewable energy sources.

 

2. Elaboration on Enhanced Reliability

The commitment to reliability is epitomized by a multifaceted approach integrating cutting-edge features and technologies. Firstly, the implementation of a dual security system, comprising both internal and external sealing mechanisms, fortifies the electrolyzer against potential leaks and operational hazards. Secondly, an upgraded fastening system mitigates the risk of electrolyzer leakage, particularly in scenarios of alternating working conditions, thereby bolstering operational stability. Furthermore, the incorporation of large diameter double pole plate technology not only streamlines the electrolyzer's form factor but also enhances structural integrity, contributing to prolonged operational lifespan. Moreover, the application of a bipolar plate coating with a thickness exceeding 50μm, coupled with exceptional corrosion resistance properties, ensures robust durability even in demanding environments. Together, these features collectively underpin the unparalleled reliability of the hydrogen production system, instilling confidence in its performance and longevity.

 

3. Detailed Insights into Low DC Power Consumption

The quest for energy efficiency is embodied in the intricate design considerations aimed at minimizing DC power consumption. Central to this endeavor is a novel flow-field design meticulously crafted through extensive simulation and testing of electrolyzer structures. This iterative optimization process ensures the uniform distribution of flow within fuel cells, thereby maximizing energy conversion efficiency. Furthermore, the integration of next-generation electrodes characterized by industry-leading overpotentials and superior tolerance in electrode reactions further enhances energy utilization efficiency. As a result, the comprehensive power consumption is capped at a remarkable ≤4.8 kWh/Nm³, reflecting a remarkable achievement in sustainable energy production.

 

4. In-depth Exploration of Short Cold Start Time

The innovative approach to reducing cold start time revolves around the development of a proprietary lye heating circulation system. This sophisticated system leverages advanced thermal management techniques to expedite the warm-up process, effectively halving the time required for initiating operations from a cold start. By facilitating rapid heating and preconditioning of critical components, this self-developed system ensures swift activation of the hydrogen production system, minimizing downtime and enhancing operational responsiveness. This transformative enhancement not only streamlines operational workflows but also enhances overall system reliability and performance, particularly in scenarios necessitating frequent start-stop cycles.

 

 

1. Enhanced Hydrogen Production Capacity
- The AWE hydrogen production equipment boasts an impressive hydrogen production capacity of up to 1200 Nm³/h, showcasing its capability to meet high-volume demands efficiently and reliably.

2. Superior Power Consumption Efficiency
- With a remarkably low DC power consumption rate of ≤4.3 kWh/Nm³, this equipment excels in the conversion of electrical energy into hydrogen energy, exemplifying unparalleled efficiency in the hydrogen production process.

3. Elevated Hydrogen Purity Levels
- Recognizing the critical importance of hydrogen purity across diverse applications, this equipment achieves a purity level exceeding 99.8% even before purification. By ensuring primary hydrogen purity, it establishes a robust foundation for subsequent supply of higher-quality hydrogen tailored to various industrial needs.

4. Exceptional Post-Purification Purity
- After undergoing purification processes, this equipment elevates the purity of hydrogen to surpass 99.999%. This impeccable purity not only meets stringent requirements in high-tech industries like semiconductor manufacturing but also advances clean energy technology by providing purer hydrogen energy for scientific research and pharmaceutical applications.

5. Maintained Stability and Safety
- Operating at a consistent working pressure of 1.8 MPa, the AWE hydrogen production equipment ensures efficient production while mitigating operational risks. This stability contributes to a safer operating environment, instilling confidence in users regarding equipment reliability and safety.

6. Intelligent Temperature Regulation
- Featuring intelligent temperature control mechanisms, this equipment maintains a precise working temperature range of 90±5℃ during operation. By optimizing temperature conditions, it enhances both efficiency and equipment lifespan, offering users a stable and reliable operational experience across diverse environmental settings.

7. Versatile Adaptability
- Designed to accommodate varying requirements in hydrogen production, this equipment offers a wide power fluctuation range of 30-120%. Within this range, it maintains efficient and stable hydrogen production, thereby catering to the diverse needs of energy industries and ensuring adaptability to fluctuating energy inputs.

 

Name	Specifications
Hydrogen production capacity (Nm³/h)	1200
kg/24 hours	2568
Standard scope of work (%)	30~120
DC power consumption (kWh/Nm3)	≤4.3
Hydrogen purity (before purification)	≥99.8%
Hydrogen purity (after purification)	≥99.999%
H₂O-H₂ content (PPM)	≤2.54
Electrolyzer enclosure - W x D x H (m)	7.25×2.5×2.43
Working pressure (MPa)	1.8
Working temperature (℃)	90±5
Environment temperature (℃)	5~45
Electrolyte (%KOH)	30

 

 

1. Demand for hydrogen equipment at transportation terminals

• Electrolyzers to produce hydrogen and hydrogen refueling stations to refill hydrogen in integrated hydrogen production and refueling stations
• On-board hydrogen storage systems and hydrogen refueling stations to supply hydrogen from external sources for medium-duty and heavy-duty hydrogen-fueled cell vehicles
• Tube-bundle trucks to deliver hydrogen to areas without hydrogen resources

 

2. Demand for alternative equipment in the green hydrogen industry

• Electrolyzers to produce green hydrogen for ammonia synthesis, methanol synthesis, refining and coal chemical industry
• Electrolyzers to produce green hydrogen as a reducing agent in the metallurgical industry

 

3. Demand for large-scale hydrogen energy storage

• Centralized electrolyzers to produce hydrogen with fluctuating power generation
• Integrated hydrogen production/refueling stations based on distributed renewable energy or valley load of the grid

 

4. Demand for high-purity hydrogen in laboratories and hydrogen-powered medical services

• Small PEM electrolyzers for hydrogen production
• High-purity hydrogen for PEM electrolyser laboratories

 

BOP System Officially Enters the Market as an Independent Product

BOP products of SANY Hydrogen Energy include platforms for 1MW, 2.5MW, 5MW, 10MW, 20MW, and 30MW products, realizing the product platforms, series of components, and standard interfaces. SANY Hydrogen Energy is capable of process system integration and BOP development, and has solved the technical problems of optimizing energy consumption and purity under fluctuating wind and solar loads, and adjusting the system safety, while the operational convenience and customer experience are also improved. In April, it won a bid for two 4-in-one separation and purification systems of Da'an, Jilin. In November, SANY Hydrogen Energy won a bid for three PEM hydrogen production and purification systems of Changchun Green Dynamic Hydrogen Energy Technology Co., Ltd. , a subsidiary of SDIC Power Holdings Co., Ltd., and entered into a contract with Shanghai Taiqingchen Energy Technology Co., Ltd. for an order of 1,000 Nm³/h separation and purification systems. Winning the three orders marks that the BOP system of SANY Hydrogen Energy has officially become an independent product and entered the market.

 

Water Electrolysis Hydrogen Production System

Alkaline water electrolysis for hydrogen production consists of the electrolytic cell system, separation and purification system, electrical system, and auxiliary system. electrolyzer (for hydrogen production) - separation system (for gas-liquid separation) - purification system (for hydrogen purification)

 

Alkaline water electrolysis hydrogen production system consists of:

• Alkaline electrolyzer: as the main equipment of the water electrolysis hydrogen production system, made up of several electrolytic units where water is decomposed to produce hydrogen and oxygen when the direct current is on
• Separation system: to separate the gas-liquid mixture produced by the electrolyzer (electrolyte entrained in hydrogen/oxygen), and to cool down the gas to 40°C
• Purification system: to remove impurities (H₂O, O₂, etc.) from the gas to the specified purity
• Electrical system: to rectify current and voltage, and control circuits of the entire system
• Auxiliary system: to supply the pure water as the raw material, cooling water, frozen water and alkaline water required by the electrolyzer, separation system, purification system and electrical system to ensure the safe and stable operation of the water electrolysis hydrogen production equipment

 

Process of the alkaline water electrolysis hydrogen production system:

• The current flows to the electrolytic cell after AC is transformed to DC
• The electrolyte in the electrolytic cell is decomposed to generate hydrogen and oxygen.
• The electrolyte with hydrogen flows into the separator and cooler, and the electrolyte flows back to the AWE electrolytic cell after being separated
• The separated hydrogen is delivered after flowing to the purification system
• Summary: electrolyzer (for hydrogen production) - separation system (for gas-liquid separation) - purification system (for hydrogen purification)

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