A New Benchmark in Industrial Nitrogen Generation! Jiangsu Minnuo Cryogenic/PSA Nitrogen Generators Empower Efficient Upgrading Across Industries

In the modern industrial system, nitrogen, as a colorless, odorless, and non-toxic inert gas, has become an indispensable core medium in industrial production due to its stable chemical properties and non-reactivity with most substances. From raw material synthesis and safety protection in the chemical industry, to precision manufacturing and packaging in the electronics industry, from fresh-keeping and storage in the food industry, to heat treatment processes in the metallurgical industry, the application of nitrogen runs through the entire chain of industrial production. According to incomplete statistics, global industrial nitrogen consumption grows at an annual rate of 8%-10%. In China, with the transformation of manufacturing towards high-end and intelligent development, higher requirements have been put forward for nitrogen purity, production stability, and cost control.

Traditional nitrogen generation methods mostly rely on purchased liquid nitrogen, which not only has problems such as high transportation costs, significant storage risks, and unstable supply but also struggles to meet the personalized production needs of enterprises. Against this backdrop, on-site nitrogen generation equipment has become the optimal choice for industrial enterprises. Among them, cryogenic air separation nitrogen generators and PSA (Pressure Swing Adsorption) nitrogen generators occupy a dominant position in the market with their respective technological advantages. As a high-tech enterprise deeply engaged in the nitrogen generation field for more than ten years, Jiangsu Minnuo Group Co., Ltd. has always been market-oriented and technology-driven, creating a product line of high-performance and reliable cryogenic air separation and PSA nitrogen generators. It provides customized solutions for enterprises in different industries with varying production requirements, establishing itself as a leading brand in the industrial nitrogen generation sector.

I. Cryogenic Air Separation Nitrogen Generator: The “Power Core” for High Purity and Large Capacity

Cryogenic air separation nitrogen generation technology separates nitrogen from oxygen, argon, and other components through low-temperature rectification based on the different boiling points of air components. Its core advantage lies in the stable production of high-purity nitrogen, making it suitable for large-scale industrial production scenarios. With years of technological accumulation, Jiangsu Minnuo has comprehensively optimized the core components and process flows of cryogenic air separation nitrogen generators, developing industrial-grade nitrogen generation equipment that integrates high efficiency, energy saving, and stability.

1. Technical Principle: The “Precision Separation” Art of Low-Temperature Rectification

The working process of a cryogenic air separation nitrogen generator mainly includes five links: air compression, preprocessing, cooling and liquefaction, rectification separation, and nitrogen purification and storage, each embodying sophisticated technical design:

• Air Compression: High-power screw air compressors are used to compress atmospheric air to 0.5-0.8MPa, providing sufficient pressure for subsequent processing. The air compressors selected by Jiangsu Minnuo are equipped with high-efficiency and energy-saving motors, reducing energy consumption by 12%-15% compared to ordinary motors. They are also equipped with intelligent frequency conversion systems that automatically adjust the speed according to air intake, minimizing no-load losses.
• Preprocessing System: Compressed air contains impurities such as moisture, oil mist, and dust. Direct entry into subsequent equipment can cause corrosion and blockage of components, affecting separation efficiency. The preprocessing system of Jiangsu Minnuo’s cryogenic air separation nitrogen generator adopts a combined process of “three-stage filtration + refrigerated drying”. The first stage filters out large particles of dust, the second stage intercepts oil mist, the third stage of precision filtration removes tiny impurities, and the refrigerated dryer lowers the air dew point to below -40℃, ensuring the air entering the rectification tower is clean and dry.
• Cooling and Liquefaction: The clean air after preprocessing enters a plate-fin heat exchanger, exchanging heat with the low-temperature nitrogen discharged from the rectification tower. The temperature gradually drops to around -170℃, and part of the air liquefies to form low-temperature liquid. Jiangsu Minnuo has optimized the flow channel design of the heat exchanger, increasing heat exchange efficiency by 20%. It also adopts vacuum insulation technology to reduce cold loss and lower operating energy consumption.
• Rectification Separation: This is the core link of cryogenic air separation nitrogen generation. After entering the rectification tower, the low-temperature air undergoes multiple evaporation and condensation processes. Since the boiling point of oxygen (-183℃) is higher than that of nitrogen (-196℃), oxygen is more likely to condense into liquid during rectification, while nitrogen rises as gas, thereby achieving nitrogen-oxygen separation. Jiangsu Minnuo’s rectification tower adopts an efficient sieve plate design, with plate efficiency 15%-20% higher than traditional designs, ensuring more precise separation and nitrogen purity of over 99.9995%.
• Nitrogen Purification and Storage: After reheating, part of the nitrogen discharged from the top of the rectification tower is stored as product nitrogen in high-pressure storage tanks, and the other part flows back to the heat exchanger to provide cold energy for air cooling, realizing energy recycling. For scenarios requiring ultra-high-purity nitrogen, Jiangsu Minnuo can also configure special purification devices to remove trace oxygen, moisture, and other impurities from nitrogen through adsorption, achieving nitrogen purity of 99.9999% to meet high-end application needs such as electronic and semiconductor grades.

2. Core Advantages: “Hardcore Strength” for Large-Scale Production

Jiangsu Minnuo’s cryogenic air separation nitrogen generator has become the preferred choice for large-scale industrial nitrogen generation due to its irreplaceable core advantages:

• Ultra-High Purity and Stability: Cryogenic air separation technology is currently the only nitrogen generation method capable of stably producing nitrogen with a purity of over 99.999%, especially suitable for industries with strict nitrogen purity requirements. For example, in semiconductor manufacturing, chip production must be carried out under the protection of ultra-high-purity nitrogen. Any trace impurities may lead to chip failure. Jiangsu Minnuo’s cryogenic air separation nitrogen generator can stably control nitrogen purity at 99.9999%, meeting the strict standards of the semiconductor industry. Meanwhile, the equipment adopts redundant design, with backup systems for key components. The annual operating time can reach over 8000 hours, and the failure shutdown rate is less than 0.5%, ensuring continuous and stable industrial production.
• Large Capacity and Low Energy Consumption: The production capacity of cryogenic air separation nitrogen generators can range from 300Nm³/h to over 10000Nm³/h, meeting the large-scale nitrogen generation needs of large chemical parks, metallurgical enterprises, etc. As production capacity increases, the unit energy consumption shows a significant downward trend. When the production capacity reaches 1000Nm³/h, the unit nitrogen energy consumption is only 0.4-0.6kWh/Nm³, much lower than that of small and medium-capacity nitrogen generation equipment. Through technical means such as optimizing the rectification tower structure, adopting efficient heat exchangers, and upgrading control systems, Jiangsu Minnuo has further reduced equipment energy consumption, improving energy-saving efficiency by 15%-20% compared to traditional cryogenic air separation nitrogen generators.
• Comprehensive Resource Utilization and Maximum Benefits: While separating nitrogen, cryogenic air separation nitrogen generators can simultaneously produce by-products such as oxygen and argon. Oxygen can be used for oxygen-enriched combustion in the metallurgical industry and oxidation reactions in the chemical industry, while argon can be used for welding protection, semiconductor manufacturing, and other high-end fields. Through the recycling and utilization of by-products, enterprises can not only reduce nitrogen generation costs but also develop new revenue channels, achieving maximum benefits from comprehensive resource utilization. For example, a large iron and steel enterprise using Jiangsu Minnuo’s cryogenic air separation nitrogen generator not only meets the nitrogen protection needs during steelmaking but also recovers oxygen for blast furnace oxygen-enriched blast, saving over 3 million yuan in energy costs annually. The recovered argon is used for stainless steel welding, increasing annual income by more than 1.5 million yuan.
• Intelligent Control and Convenient Operation and Maintenance: Jiangsu Minnuo’s cryogenic air separation nitrogen generator is equipped with an independently developed intelligent control system, adopting a PLC + touch screen architecture. It can realize real-time monitoring, automatic adjustment, fault alarm, and other functions of equipment operating parameters. Operators can complete operations such as startup, shutdown, and production capacity adjustment through the touch screen without professional technical background. Meanwhile, the system supports remote monitoring and data upload. Enterprise managers can real-time check the equipment operating status through mobile APP or computer terminal, and timely grasp key data such as production capacity, energy consumption, and purity. The equipment is also equipped with a complete self-diagnostic function, which can early warn potential faults and provide maintenance suggestions, reducing the difficulty and cost of operation and maintenance.

3. Industrial Applications: “Core Support” for Empowering High-End Industry

With its advantages of high purity and large capacity, Jiangsu Minnuo’s cryogenic air separation nitrogen generator has been widely used in various high-end industrial fields:

• Chemical Industry: In large-scale coal chemical and petrochemical projects, nitrogen is mainly used for feed gas protection, catalyst regeneration, equipment purging, emergency fire extinguishing, and other scenarios. For example, a coal chemical enterprise adopts Jiangsu Minnuo’s 5000Nm³/h cryogenic air separation nitrogen generator to provide nitrogen with a purity of 99.999% for the coal-to-methanol process, ensuring stable and safe reaction processes. Meanwhile, the recovered oxygen is used for oxygen-enriched combustion in gasifiers, improving reaction efficiency and reducing coal consumption.
• Metallurgical Industry: In the smelting process of iron, steel, and non-ferrous metals, nitrogen is used for bottom blowing protection of steelmaking converters, cooling protection of continuous casting billets, atmosphere protection of steel heat treatment, etc. A large iron and steel group selected Jiangsu Minnuo’s 8000Nm³/h cryogenic air separation nitrogen generator to provide protective gas for the annealing process of hot-rolled steel plates, effectively preventing steel plate oxidation and improving product surface quality. Meanwhile, the recovered argon is used for stainless steel smelting, reducing the cost of purchased argon.
• Electronics Industry: In the manufacturing process of electronic components such as semiconductors, integrated circuits, and liquid crystal panels, ultra-high-purity nitrogen is required as protective gas, purging gas, and carrier gas. The 1000Nm³/h cryogenic air separation nitrogen generator customized by Jiangsu Minnuo for a semiconductor enterprise has a nitrogen purity of 99.9999% and a dew point below -70℃, meeting the strict requirements for gas purity in chip manufacturing and helping the enterprise produce high-performance semiconductor products.
• New Energy Industry: In lithium battery manufacturing, nitrogen is used for electrode material drying, battery packaging, and injection process protection, preventing moisture from entering the battery and affecting performance. A lithium battery production enterprise adopts Jiangsu Minnuo’s 3000Nm³/h cryogenic air separation nitrogen generator to provide stable high-purity nitrogen for the power battery production line, effectively improving the cycle life and safety of the battery.

II. PSA Nitrogen Generator: A Flexible, Efficient, and Ready-to-Use “Industrial Companion”

PSA (Pressure Swing Adsorption) nitrogen generation technology realizes nitrogen-oxygen separation under normal temperature and variable pressure conditions based on the selective adsorption characteristics of adsorbents for nitrogen and oxygen in air. This technology has advantages such as compact equipment, fast startup, simple operation, and low cost, making it suitable for industrial scenarios with small and medium production capacity and moderate purity requirements. Targeting the personalized needs of different industries, Jiangsu Minnuo has developed a series of PSA nitrogen generator products, including standard type, explosion-proof type, mobile type, etc., becoming the preferred equipment for small and medium-scale industrial nitrogen generation.

1. Technical Principle: The “Selective Adsorption” Magic of Carbon Molecular Sieve

The core component of a PSA nitrogen generator is the carbon molecular sieve. Its working principle is based on the “adsorption-desorption” cycle process, mainly including the following four steps:

• Pressurized Adsorption: Clean air after preprocessing (removing moisture, oil mist, dust, and other impurities) enters the adsorption tower (usually a two-tower structure, one tower for adsorption and one tower for desorption) under a pressure of 0.6-0.8MPa. The adsorption capacity of carbon molecular sieve for oxygen is much greater than that for nitrogen, so oxygen is quickly adsorbed on the surface of the molecular sieve, while nitrogen is discharged from the top of the adsorption tower as product gas. The special carbon molecular sieve selected by Jiangsu Minnuo has the characteristics of large adsorption capacity, high separation coefficient, and long service life, with oxygen adsorption efficiency 25% higher than that of ordinary molecular sieves.
• Pressure Equalization: When the carbon molecular sieve in the adsorption tower reaches saturation in oxygen adsorption, the system automatically switches valves, and part of the high-pressure nitrogen in this tower flows back to the other adsorption tower in the desorption state, balancing the pressure of the two towers. This process not only recovers part of the pressure energy, reduces energy consumption but also improves the adsorption efficiency of the next cycle.
• Depressurization Desorption: After pressure equalization, the adsorption tower with saturated adsorption performs depressurization and exhaust, reducing the pressure to normal pressure or even negative pressure. The adsorbed oxygen desorbs from the surface of the molecular sieve and is discharged out of the tower with waste gas. The carbon molecular sieve restores its adsorption capacity, preparing for the next adsorption cycle.
• Purge Regeneration: To further improve the regeneration effect of the molecular sieve, the system uses a small amount of product nitrogen to purge the desorbed adsorption tower, completely discharging the residual oxygen and ensuring the nitrogen purity of the next adsorption cycle.

Through the alternating cycle process of adsorption-pressure equalization-depressurization desorption-purge in the two towers, the PSA nitrogen generator can continuously and stably produce nitrogen. Jiangsu Minnuo has optimized the cycle design, controlling each cycle at 60-90 seconds, which not only ensures the adsorption efficiency of the molecular sieve but also extends its service life. Meanwhile, the equipment is equipped with a high-precision flow control system, which can flexibly adjust nitrogen production and purity according to actual needs.

2. Core Advantages: “Flexible Tool” for Small and Medium Production Capacity

Jiangsu Minnuo’s PSA nitrogen generator is widely favored by small and medium-sized enterprises due to its core advantages:

• Fast Startup and Ready-to-Use: Unlike cryogenic air separation nitrogen generators that require hours to start, PSA nitrogen generators do not need complex cooling systems or rectification devices. They can operate at normal temperature and pressure, achieving stable nitrogen production within 10-30 minutes after startup. This greatly improves production response speed, making them ideal for enterprises with irregular production batches or temporary nitrogen supplement needs. For example, a food processing factory needed to temporarily add food packaging production lines during the peak season. After commissioning Jiangsu Minnuo’s PSA nitrogen generator, qualified nitrogen was produced within half an hour, ensuring the smooth operation of the production line.
• Compact Size and Flexible Installation: With a compact structure, the PSA nitrogen generator occupies only 1/5 to 1/3 of the space required by cryogenic air separation nitrogen generators. It can be flexibly installed according to workshop layout, even directly above the production line or in corners, without occupying valuable production space. For small and medium-sized enterprises with limited space or scenarios requiring mobile nitrogen generation (such as outdoor construction and temporary projects), Jiangsu Minnuo also offers mobile PSA nitrogen generators. Integrated in trailers or containers, these devices can be transferred to any required location and put into operation immediately by connecting to a power source, offering exceptional flexibility.
• Adjustable Production Capacity and Energy Saving: The PSA nitrogen generator features a wide range of production capacity adjustment, allowing free switching between 30% and 100% load according to actual production needs. This avoids energy waste associated with fixed-capacity equipment operating at low loads. For instance, a rubber product enterprise reduced its nitrogen demand to 40% of the peak season during the off-season. By adjusting the load of the PSA nitrogen generator, the unit nitrogen energy consumption was reduced by 30%, resulting in annual electricity savings of hundreds of thousands of yuan. Additionally, equipped with high-efficiency energy-saving air compressors and intelligent frequency conversion systems, the equipment achieves a 10%-15% improvement in energy-saving efficiency compared to traditional PSA nitrogen generators.
• Easy Maintenance and Low Cost: The core component of the PSA nitrogen generator, the carbon molecular sieve, has a service life of 8-10 years and does not require regular replacement. Daily maintenance mainly involves inspecting easily worn parts such as filter elements, valves, and pressure gauges, resulting in low maintenance frequency and costs. Jiangsu Minnuo also equips the equipment with a maintenance-free air preprocessing system, further reducing maintenance workload. Moreover, on-site nitrogen generation eliminates the costs and risks associated with liquid nitrogen transportation and storage. Compared to purchasing liquid nitrogen, the comprehensive cost of using a PSA nitrogen generator can be reduced by 40%-60%, generating substantial savings for enterprises.
• Safety, Reliability, and Environmental Friendliness: Operating at normal temperature and pressure, the PSA nitrogen generator avoids extreme working conditions such as high temperature, high pressure, and low temperature. Its operation is stable and safe, with no risks of explosion or leakage. Adopting a fully enclosed structure, the equipment discharges waste gas directly into the atmosphere without producing wastewater or waste residue, complying with environmental protection requirements. For industries with strict production environment standards such as food and pharmaceuticals, the environmental characteristics of the PSA nitrogen generator not only ensure product quality and safety but also align with green production trends.

3. Industrial Applications: “Considerate Partner” Serving Various Industries

With its advantages of flexibility, efficiency, and low cost, Jiangsu Minnuo’s PSA nitrogen generator has been widely applied in the production processes of small and medium-sized enterprises across multiple industries:

• Food Industry: Nitrogen is mainly used for fresh-keeping, packaging, brewing, and other scenarios in the food industry. In food packaging, nitrogen displaces air inside the package to prevent food oxidation and mold growth, extending the shelf life. In beer and beverage brewing, nitrogen is used for liquid pressurization and filling protection to avoid contact between the liquid and air, which could affect taste. A food packaging enterprise adopted Jiangsu Minnuo’s 50Nm³/h PSA nitrogen generator to provide nitrogen with a purity of 99.5% for snack food packaging. As a result, the product shelf life was extended from 3 months to 12 months, food loss was reduced, and product competitiveness was enhanced.
• Electronics Industry: Small and medium-sized electronic component manufacturing, LED packaging, circuit board welding, and other scenarios require nitrogen with a purity between 99.9% and 99.99% and flexible production capacity adjustment. An electronics factory selected Jiangsu Minnuo’s 100Nm³/h PSA nitrogen generator to provide protective gas for the LED packaging production line. This effectively prevented solder oxidation, improved product qualification rates, and the equipment could adjust production capacity according to order volume, avoiding energy waste.
• Pharmaceutical Industry: In the production and packaging of pharmaceuticals, nitrogen is used for raw material drying, preparation packaging, sterile operation protection, etc., to prevent pharmaceutical products from moisture absorption and oxidation, ensuring stable product quality. A pharmaceutical enterprise adopted Jiangsu Minnuo’s 80Nm³/h PSA nitrogen generator to provide nitrogen with a purity of 99.99% for capsule packaging, meeting GMP certification requirements. Meanwhile, on-site nitrogen generation eliminated the storage risks associated with purchased liquid nitrogen, ensuring production safety.
• Rubber Industry: During rubber vulcanization, nitrogen is used for atmosphere protection in vulcanization tanks to prevent rubber products from oxidation and aging, improving product wear resistance and aging resistance. A rubber product factory adopted Jiangsu Minnuo’s 150Nm³/h PSA nitrogen generator to provide nitrogen with a purity of 99% for the tire vulcanization process. This increased product service life by 20% and reduced energy consumption during vulcanization.
• Metallurgical Industry: Small and medium-sized metallurgical enterprises engaged in heat treatment, powder metallurgy, and other processes have moderate nitrogen production requirements and need quick startup. A powder metallurgy enterprise adopted Jiangsu Minnuo’s 200Nm³/h PSA nitrogen generator to provide protective gas for metal powder sintering, preventing metal powder oxidation and improving the density and strength of sintered parts. The equipment’s quick startup met the production needs of multiple batches and small volumes.

III. Jiangsu Minnuo: Leading the Development of the Industrial Nitrogen Generation Industry through Technological Innovation

As a high-tech enterprise in the industrial nitrogen generation field, Jiangsu Minnuo Group Co., Ltd. has always adhered to the development philosophy of “taking technological innovation as the core, product quality as the foundation, and customer needs as the orientation” since its establishment. It continuously deepens cryogenic air separation and PSA nitrogen generation technologies, creating a product line of nitrogen generation equipment with core competitiveness and market influence, and has become a trusted choice for thousands of enterprises nationwide.

1. Strong R&D Capabilities: Building a Technological “Moat”

Jiangsu Minnuo has an R&D team composed of more than 20 senior engineers, including 3 doctors and 8 senior engineers. The team members have an average of over 10 years of R&D experience in the nitrogen generation industry, with profound technical accumulation in fields such as cryogenic air separation technology, PSA technology, and intelligent control systems. The company has established a professional R&D center equipped with advanced experimental equipment and testing instruments. It invests 15% of its annual sales revenue in technological R&D and product upgrading, and has successively overcome a series of core technical difficulties:

• In terms of cryogenic air separation nitrogen generation technology, it has developed key technologies such as high-efficiency and energy-saving rectification towers, low-energy-consumption plate-fin heat exchangers, and intelligent cold energy recovery systems, reducing equipment energy consumption by 15%-20%, shortening startup time by 20%, and significantly improving nitrogen purity stability;
• In terms of PSA nitrogen generation technology, it has collaborated with well-known domestic universities to develop special carbon molecular sieves, increasing adsorption capacity by more than 25% and extending service life to 10 years. It has also optimized the adsorption-desorption cycle process, improving nitrogen production and purity stability;
• In terms of intelligent control, it has independently developed an intelligent control system based on PLC and Internet of Things technology, realizing real-time monitoring, remote control, fault early warning, data analysis, and other functions of equipment operating parameters, providing enterprises with intelligent nitrogen generation solutions.

Up to now, Jiangsu Minnuo has obtained 6 national invention patents and 12 utility model patents, and has participated in the formulation of multiple industry standards for nitrogen generators, with technical strength leading the domestic level. The company has also established long-term cooperative relationships with universities such as Southeast University and Nanjing Tech University, co-building industry-university-research cooperation bases to continuously promote the innovation and application of nitrogen generation technology.

2. Strict Quality Control: Creating Reliable “Product Strength”

Jiangsu Minnuo has always regarded product quality as the lifeline of the enterprise. It strictly follows the requirements of ISO9001 quality management system, ISO14001 environmental management system, and ISO45001 occupational health and safety management system, establishing a full-process quality control system from raw material procurement, production and processing, finished product testing to after-sales service.

• Raw Material Procurement: Core components such as air compressors, molecular sieves, heat exchangers, and valves are selected from well-known domestic and foreign brands, such as Atlas Copco air compressors, German Beckhoff filters, and high-quality domestic carbon molecular sieves, ensuring reliable component quality. All raw materials must undergo strict inspection before entering the factory, and unqualified products are resolutely not allowed to be stored in the warehouse;
• Production and Processing: The company has a modern production workshop equipped with advanced production equipment such as CNC lathes, milling machines, drilling machines, and welding robots, realizing precision processing of core components. During the production process, each process is equipped with quality control points, and professional quality inspectors conduct real-time inspections to ensure processing accuracy and assembly quality;
• Finished Product Testing: Finished equipment must undergo strict performance tests, including nitrogen purity testing, production capacity testing, energy consumption testing, stability testing, safety performance testing, etc. All indicators can only leave the factory after meeting the design requirements. The company is equipped with professional testing equipment such as high-precision nitrogen purity analyzers, flow testers, and energy consumption detectors to ensure accurate and reliable testing results;
• After-Sales Service: The company has established a sound after-sales service system, set up a 24-hour service hotline, and deployed more than 10 professional after-sales service teams nationwide. It can respond within 2 hours after receiving customer maintenance requests and arrive at the scene within 48 hours (except for remote areas). The after-sales service team can not only quickly solve various problems during equipment operation but also provide customers with value-added services such as regular maintenance and technical upgrades to ensure long-term stable operation of the equipment.

3. Customized Solutions: Meeting Personalized “Needs”

Different industries and enterprises have significant differences in nitrogen generation needs, such as nitrogen purity, production capacity, installation site, and operating environment. With rich industry experience and technical strength, Jiangsu Minnuo can provide customers with comprehensive customized solutions:

• Pre-Sales Consultation: A professional team of technical consultants conducts in-depth communication with customers to understand their production processes, nitrogen needs (purity, production capacity, pressure), installation site, budget, and other information, providing customers with detailed demand analysis and production capacity calculation;
• Scheme Design: According to customer needs, combined with industry characteristics and technical standards, design personalized nitrogen generation solutions for customers, including equipment selection, process flow design, pipeline layout, control system configuration, etc., ensuring that the scheme not only meets customers’ current needs but also has a certain degree of scalability;
• Equipment Customization: For special industries or special needs, such as explosion protection, corrosion resistance, mobile nitrogen generation, etc., the company can carry out customized equipment development, adjusting equipment structure, materials, control systems, etc., to meet customers’ personalized requirements;
• Installation and Commissioning: Dispatch professional engineers to conduct on-site equipment installation and commissioning to ensure standardized equipment installation and normal operation. Meanwhile, provide professional technical training for customer operators, including equipment operation, maintenance, fault handling, etc., to ensure that customers can operate the equipment independently;
• Post-Optimization: During the operation of the equipment, the company regularly visits customers to understand the equipment operation status. According to changes in customers’ production needs, provide customers with optimization schemes such as equipment upgrades and production capacity adjustments to help customers continuously reduce costs and improve efficiency.

IV. Customer Cases: Witnessing the “Practical Effects” of Minnuo Nitrogen Generators

Over the years, Jiangsu Minnuo’s cryogenic air separation nitrogen generators and PSA nitrogen generators have served thousands of enterprises in more than 30 provinces, municipalities directly under the Central Government, and autonomous regions across the country. With stable performance, efficient production capacity, and thoughtful service, they have won wide recognition from customers. The following are some typical customer cases:

Case 1: Cryogenic Air Separation Nitrogen Generation Project in a Large Chemical Park

• Customer Needs: Multiple chemical enterprises in the park need high-purity nitrogen, with a total production capacity requirement of 6000Nm³/h, nitrogen purity requirement of 99.999%, continuous and stable operation, and hope to recover by-products such as oxygen and argon;
• Solution: Jiangsu Minnuo customized two sets of 3000Nm³/h cryogenic air separation nitrogen generators for it, adopting a two-tower rectification structure, equipped with efficient heat exchangers and intelligent control systems, and designed a by-product recovery system;
• Application Effects: The equipment operates stably, with nitrogen purity stably at 99.9995%, meeting the production needs of all chemical enterprises in the park; the recovered oxygen is used for oxidation reaction processes in the park, and argon is used for welding protection, saving the park a total of over 8 million yuan in energy costs and purchased gas costs annually; the annual operating time of the equipment reaches 8200 hours, and the failure shutdown rate is only 0.3%, winning high praise from customers.

Case 2: PSA Nitrogen Generation Project in a Food Packaging Enterprise

• Customer Needs: Nitrogen is needed for fresh-keeping of snack food packaging, with a production capacity requirement of 50Nm³/h, nitrogen purity requirement of 99.5%, limited installation site, and hope for quick equipment startup and simple maintenance;
• Solution: Jiangsu Minnuo provided it with a 50Nm³/h standard PSA nitrogen generator, which adopts a compact design, covers an area of only 3㎡, and is equipped with an intelligent control system and a maintenance-free preprocessing system;
• Application Effects: The equipment can produce qualified nitrogen within 20 minutes after startup, with nitrogen purity stably above 99.6%, the product shelf life extended from 3 months to 12 months, and the food loss rate reduced by 15%; compared to purchasing liquid nitrogen, it saves more than 300,000 yuan annually, with minimal maintenance workload, only requiring inspection of filter elements every quarter, fully meeting customer needs.

Case 3: Hybrid Nitrogen Generation Project in an Electronics Enterprise

• Customer Needs: The enterprise has both a large-scale chip production workshop, requiring 99.9999% high-purity nitrogen with a production capacity of 1000Nm³/h, and a small and medium-sized component packaging workshop, requiring 99.99% purity nitrogen with a production capacity of 200Nm³/h; it is hoped that the two systems will operate independently while sharing some auxiliary equipment to reduce investment costs;
• Solution: Jiangsu Minnuo designed a hybrid nitrogen generation solution for it, with one set of 1000Nm³/h cryogenic air separation nitrogen generator to meet the needs of chip production, and one set of 200Nm³/h PSA nitrogen generator to meet the needs of component packaging. The two systems share air compressors, preprocessing systems, and control systems, reducing duplicate equipment investment;
• Application Effects: The two sets of equipment operate independently without interfering with each other, and the nitrogen purity meets the design requirements, satisfying the production needs of different workshops; sharing auxiliary equipment reduces investment costs by about 15%, and the intelligent control system realizes centralized monitoring and management of the two sets of equipment, greatly improving operation and maintenance efficiency and helping the enterprise achieve optimal resource allocation.

Conclusion: Choose Minnuo, Choose Professional, Stable, and Efficient Nitrogen Generation Guarantee

In the field of industrial nitrogen generation, cryogenic air separation nitrogen generators and PSA nitrogen generators meet the nitrogen generation needs of large-scale, high-purity and small and medium-scale, flexible and efficient respectively with their respective technological advantages. As a leading brand in the industry,Jiangsu Minnuo Group Co., Ltd. has provided high-quality nitrogen generation solutions for enterprises in different industries with varying production requirements through strong R&D capabilities, strict quality control, and thoughtful customized services, becoming a reliable partner for industrial enterprises to reduce costs, increase efficiency, and transform and upgrade.

Whether you need a high-purity, large-capacity cryogenic air separation nitrogen generator or a flexible, efficient, and ready-to-use PSA nitrogen generator, Jiangsu Minnuo can tailor the most suitable solution for you according to your actual needs. We promise to provide you with comprehensive nitrogen generation guarantee with excellent product performance, reasonable price system, and perfect after-sales service, helping your enterprise seize opportunities and gain advantages in the fierce market competition!

For industrial nitrogen generation, choose Minnuo —— Jiangsu Minnuo Group Co., Ltd., working with you to create an efficient future for industrial production!