Empowering the New Era of Hydrogen Energy: Jiangsu Minnuo’s PSA Hydrogen Purification Technology Leads the Revolution in Efficient

Introduction: Amid the Hydrogen Energy Wave, Purification Technology Becomes a Core Competitiveness

Guided by the global “dual carbon” goals, the transformation of the energy structure has entered a deep-water phase. As a benchmark for zero-carbon emission clean energy, hydrogen energy is moving from the laboratory to industrial application. From the popularization of fuel cell vehicles and the upgrading of green industrial manufacturing, to the precision production of electronic semiconductors and the cutting-edge technologies of aerospace, the application scenarios of hydrogen are constantly expanding. However, one key prerequisite remains unchanged ——high-purity hydrogen is the core foundation for ensuring the safe and efficient operation of all scenarios.

Raw hydrogen sources such as industrial by-product hydrogen, hydrogen produced from fossil energy or water electrolysis often contain various impurities including CO₂, CO, CH₄, N₂ and water vapor. Direct use of such hydrogen can lead to equipment failure, efficiency attenuation and even safety risks. For example, trace amounts of CO (exceeding 0.2ppm) in fuel cells can cause catalyst poisoning, trace impurities in the electronic industry may result in chip scrapping, and impurities in the metallurgical process can affect product purity. Therefore, efficient and reliable hydrogen purification technology has become a “bottleneck” link in the hydrogen energy industry chain, and the Pressure Swing Adsorption (PSA) process has become the global mainstream choice by virtue of its irreplaceable advantages.

With 30 years of experience in gas separation technology, Jiangsu Minnuo Group, a leading enterprise in the industry, has deeply engaged in the R&D and application of PSA technology and created hydrogen purification solutions adapted to all scenarios. Ranging from industrial-grade to electronic-grade, and from small and medium-sized distributed production to large-scale mass production, Minnuo’s PSA hydrogen purification system empowers global customers with its core advantages of “high purity, low energy consumption, intellectualization and customization”, boosting the high-quality development of the hydrogen energy industry.

I. Decoding PSA Technology: Why It Is the Optimal Solution for Hydrogen Purification

Since its birth, Pressure Swing Adsorption (PSA) technology has occupied a dominant position in the field of gas purification by virtue of its unique physical separation principle. Compared with traditional technologies such as cryogenic separation and membrane separation, the core advantages of the PSA process stem from its exquisite design of “selective adsorption + pressure cycle”, and Jiangsu Minnuo has realized a comprehensive upgrade and optimization of the technology on this basis.

1. Scientific Principle: The Separation Magic That Lets Hydrogen “Break Through Automatically”

The core logic of PSA technology is to realize separation and regeneration by using the selective adsorption characteristics of adsorbents for different gas components combined with pressure changes. This process is vividly demonstrated in Minnuo’s PSA hydrogen purification system:

• Selective adsorption mechanism: The system adopts a combination of high-efficiency adsorbents filled in layers —— activated alumina at the bottom for deep dehydration, special molecular sieves in the middle for accurately capturing impurities such as CO and CH₄, and special adsorbents at the top for targeted removal of trace sulfides and inert gases. Like “intelligent sieves”, these adsorbents preferentially adsorb impurities under high-pressure conditions (1.5-3.0MPa), while hydrogen is hardly adsorbed due to its small molecular weight and low polarity, thus naturally enriching in the gas phase.
• Cyclic regeneration design: The parallel operation of 4-12 towers is controlled by a PLC program to realize a periodic cycle of “adsorption – pressure equalization – desorption – pressure boosting”. During the adsorption phase, impurities in the feed gas are firmly locked on the surface of the adsorbent, and high-purity hydrogen is continuously output; during the desorption phase, the system pressure is reduced to normal pressure or vacuum, and the adsorbent releases the adsorbed impurities to complete regeneration. The alternate operation of multiple towers ensures 24-hour continuous production, and the hydrogen recovery rate is stably maintained at 85%-92%, far exceeding the industry average.

2. Core Advantages: Outperforming Traditional Processes in Four Dimensions

Compared with the high energy consumption of cryogenic separation, low purity of membrane separation and high pollution of chemical absorption methods, Minnuo’s PSA hydrogen purification technology shows all-round advantages:

• Purity ceiling: Full coverage from 99.97% to 99.9999%: Minnuo’s PSA system can accurately meet the requirements of 99.99% industrial hydrogen for general industrial needs, 99.999% high-purity hydrogen for the electronic industry, and 99.9999% ultra-high-purity hydrogen for fuel cells and aerospace fields. By optimizing the adsorbent formula and process parameters, the system can control the content of key impurities such as CO and CO₂ below 0.1ppm, fully complying with the national standard of GB/T 3634.2-2011 and the hydrogen standard for fuel cell vehicles of GB/T 37244-2018.
• Energy consumption revolution: Operating costs reduced by more than 30%: The PSA process only consumes a small amount of energy in the pressure regulation process without additional heating or refrigeration, reducing energy consumption by 40%-60% compared with cryogenic separation. Minnuo’s original “dynamic adsorption pressure layer system” and “inter-tower pressure equalization optimization technology” further reduce hydrogen loss and energy waste, enabling customers to continuously save costs in long-term operation.
• Intelligent operation and maintenance: Unattended, stable and reliable: The system is equipped with an imported German PLC control system, integrating real-time monitoring, automatic adjustment, fault alarm and other functions, which can realize the whole process of unattended operation from start-up to shutdown. The equipment can produce qualified hydrogen in only 15-30 minutes after start-up, with real-time adjustable pressure, flow and purity. Equipped with an automatic alarm system for purity below the set value, it ensures zero fluctuation of product quality.
• Environmental friendliness: Zero pollution emission, in line with dual carbon goals: No chemical reagents are consumed in the entire purification process, and a small amount of impurity gases generated by desorption can be recycled or harmlessly incinerated without secondary pollution. Compared with traditional chemical purification processes, Minnuo’s PSA system can reduce carbon emissions by thousands of tons every year, helping enterprises realize the transformation to green production.

II. Minnuo’s Strength: 30 Years of Accumulation, Building a PSA Technology Benchmark

Jiangsu Minnuo Group has been deeply engaged in the gas separation field for 30 years. From the mature application of PSA oxygen and nitrogen production technology to the special breakthrough of hydrogen purification systems, it has always taken “technological innovation” as its core driving force. As a high-tech enterprise integrating R&D, design, production, installation and service, Minnuo’s core competitiveness is reflected in three dimensions:

1. Top-tier R&D Team

Minnuo has a R&D team composed of senior PSA engineers, material scientists and automation experts, among which 35% have senior professional titles. The team has long-term cooperation with universities and research institutes, focusing on key fields such as adsorbent material upgrading, process optimization and intelligent control. It has successively solved technical problems such as “deep removal of trace impurities”, “long-term stable operation of adsorbents” and “modular integrated design”, and obtained a number of national patents.

In the selection of adsorbents, Minnuo adopts internationally renowned brand molecular sieves such as JALOX and UOP, combined with the independently developed “multi-layer filling process”, which extends the service life of adsorbents to 8-10 years, far exceeding the industry average of 5-6 years, and greatly reducing the replacement cost for customers.

2. Capability of Customized Solutions

Different industries and scenarios have vastly different requirements for hydrogen purity, output and pressure. Abandoning the “one-size-fits-all” standardized products, Minnuo adheres to the service concept of “tailor-made” and provides full-process solutions from early research to later operation and maintenance:

• Feed gas adaptation: It can process various feed gases with a hydrogen content of 15%-90%, including coke oven gas, methanol cracking gas, water electrolysis gas, refinery gas, etc. Harmful substances such as oil mist and dust are accurately removed through the pretreatment system to avoid adsorbent poisoning.
• Customized equipment forms: According to different site and production capacity requirements, three equipment forms are provided: skid-mounted, containerized and fixed. Skid-mounted equipment is “plug-and-play” with a short installation cycle, suitable for small and medium-sized enterprises or temporary projects; containerized equipment is easy to transport and transfer, and can be flexibly deployed in distributed hydrogen production scenarios; fixed equipment has large production capacity and strong stability, suitable for large-scale production in large chemical and metallurgical enterprises.
• Flexible adjustable production capacity: Hydrogen output can be customized on demand from 1-10000Nm³/h, with a pressure range of 0.01-3.0MPa, meeting the full-scenario needs from small-batch laboratory use to large-scale industrial production.

3. Globally Recognized Quality and Service

Minnuo’s PSA hydrogen purification system has passed ISO9001 quality system certification and CE certification. Its products are sold to many countries and regions in Europe, Southeast Asia, Africa and other places, and it has accumulated thousands of customer cases in the chemical, metallurgical, electronic, fuel cell and other fields.

In terms of service, Minnuo has established an operation and maintenance system of “24-hour response + localized service”: pre-sales services include feed gas analysis, process scheme design and investment return calculation; in-sales services cover equipment installation, commissioning and personnel training; after-sales services provide whole-life cycle services such as regular inspection, adsorbent replacement and technical upgrading to ensure the long-term stable operation of equipment.

III. Application Cases: Minnuo’s PSA Technology Empowers Various Industries

From hydrogen extraction from coke oven gas in steel plants and high-purity hydrogen supply in electronic factories, to fuel cell hydrogen refueling stations and green synthesis in chemical enterprises, Minnuo’s PSA hydrogen purification system has taken root in many industries, proving its technical strength with practical results.

1. Iron and Steel Industry: Hydrogen Extraction from Coke Oven Gas, Turning Waste into Treasure

A large iron and steel enterprise produces a large amount of coke oven gas (with a hydrogen content of 55%-60%) every year. The traditional treatment method is combustion and venting, which not only wastes energy but also pollutes the environment. The enterprise adopted Minnuo’s 12-tower PSA hydrogen purification system with a gas treatment capacity of 50000Nm³/h, purifying coke oven gas to 99.99% industrial pure hydrogen for use as a reducing agent and fuel in blast furnace ironmaking.

After the project was put into operation, the enterprise recovers about 400 million Nm³ of hydrogen every year, equivalent to 48,000 tons of standard coal, reduces CO₂ emissions by 120,000 tons, and creates a direct economic benefit of over 100 million yuan annually. The system has been running without failure for 3 years, with a stable hydrogen recovery rate of 91%, winning high recognition from the customer.

2. Electronic Industry: Ultra-high-purity Hydrogen Supply, Ensuring Precision Manufacturing

A semiconductor enterprise requires 99.9999% ultra-high-purity hydrogen in the production process for key processes such as wafer cleaning and thin film deposition. Trace impurities may lead to an increase in chip defect rate and directly affect product quality. Minnuo customized a 4-tower PSA purification system for it, combined with a deep purification device, raising the hydrogen purity to 99.99995% and controlling the content of impurities such as CO and CO₂ below 0.05ppm.

Since the system was put into operation, the chip defect rate has been reduced by 30% and the production efficiency has been increased by 15%, fully meeting the stringent requirements of the electronic industry for ultra-high-purity hydrogen. At the same time, the low-energy-consumption design of the system saves the enterprise more than one million yuan in electricity costs every year, achieving a dual improvement in economic benefits and product quality.

3. Fuel Cell Industry: Green Hydrogen Source, Boosting Hydrogen Energy Travel

With the rapid development of fuel cell vehicles, the demand for high-purity hydrogen in hydrogen refueling stations is increasingly urgent. A new energy enterprise is laying out a national network of hydrogen refueling stations and selected Minnuo’s PSA hydrogen purification system as the core equipment to process the feed gas produced by water electrolysis for hydrogen production (with a hydrogen content of 99.5%). The purified hydrogen purity reaches 99.999% with a CO content of <0.1ppm, fully complying with the hydrogen standard for fuel cell vehicles.

Adopting a containerized design, the system can be quickly deployed on the site of hydrogen refueling stations with a daily hydrogen treatment capacity of 1000Nm³, meeting the hydrogen refueling needs of 100 fuel cell vehicles. The stable operation and low energy consumption of the system have reduced the operating costs of hydrogen refueling stations and boosted the popularization of hydrogen energy travel.

4. Chemical Industry: Hydrogen Production by Methanol Reforming, Optimizing Production Processes

A chemical enterprise adopts the methanol reforming hydrogen production process to produce hydrogen for the synthesis reaction of butanol and octanol. The traditional purification process has high energy consumption and low purity, affecting the product yield. Minnuo designed a 6-tower PSA purification system for it, purifying the methanol reforming gas to 99.99% with a hydrogen recovery rate of 90%.

After the project was put into operation, the synthesis reaction efficiency of the enterprise was increased by 8% and the product purity was improved. At the same time, it saves 3 million yuan in energy consumption costs every year, achieving the dual goals of energy conservation, efficiency improvement and product upgrading.

IV. Future Outlook: Joining Hands with Minnuo to Embrace the Golden Age of Hydrogen Energy

At present, the global hydrogen energy industry is ushering in an explosive growth. China has included hydrogen energy in the key development plan of the energy field during the “14th Five-Year Plan” period, and various regions have issued supportive policies to promote the wide application of hydrogen energy in transportation, industry, energy storage and other fields. As a core link in the hydrogen energy industry chain, the importance of hydrogen purification technology is becoming increasingly prominent.

Jiangsu Minnuo Group will continue to deepen PSA technology innovation and focus on three development directions: first, research and develop new adsorption materials such as Metal-Organic Frameworks (MOFs) to further improve impurity selectivity and adsorption capacity; second, introduce AI intelligent algorithms to optimize pressure curves and switching sequences, reducing system energy consumption by another 10%-15%; third, promote modular and miniaturized design, reduce the equipment cost and deployment difficulty of distributed hydrogen production scenarios, and help hydrogen energy enter thousands of households.

Whether it is the green transformation of traditional industries or technological breakthroughs in emerging industries, high-purity hydrogen is an indispensable core resource. Based on 30 years of technical accumulation, taking customized solutions as the link and whole-life cycle service as the guarantee, Jiangsu Minnuo Group is willing to cooperate with global customers to jointly promote the high-quality development of the hydrogen energy industry and contribute Minnuo’s strength to the realization of the “dual carbon” goals and the construction of a clean and low-carbon energy system.

Choosing Minnuo‘s PSA hydrogen purification system means choosing a high-purity, low-energy-consumption and highly reliable hydrogen energy solution. Let us embrace the golden age of hydrogen energy together and create a green and better future!