HANGZHOU NUZHUO TECHNOLOGY GROUP CO.,LTD.

[Hangzhou, China, October 28, 2025] – As a global leader in industrial gases and air separation equipment, Nuzhuo Group today released an in-depth technical guide, systematically analyzing the broad application scenarios and key selection criteria for cryogenic air separation technology. This guide aims to provide authoritative decision-making support for project planning and equipment investment by clients across various industries worldwide, maximizing profitability.

I. Core Technology: What is Cryogenic Air Separation?

Cryogenic air separation is a cutting-edge technology that utilizes the differences in boiling points of air components (primarily nitrogen, oxygen, and argon) to separate gases through distillation at extremely low temperatures (approximately -170°C to -195°C). This process enables large-scale, efficient production of high-purity oxygen, nitrogen, and rare gases, making it an indispensable “powerhouse” for modern industry.

II. Widespread Applications: From Traditional Cornerstone to Cutting-Edge Technology

Nuzhuo Group’s cryogenic air separation equipment is driving the development of the following key sectors:

1. Metallurgical Industry: As the “lifeline” of metal smelting and cutting, high-purity oxygen is used for enhanced smelting and redox reactions during steelmaking; high-purity nitrogen is used for protective atmosphere heat treatment and metal annealing, significantly improving product quality.

2. Chemical and Petroleum Industry: In the petrochemical industry, oxygen is used in gasification processes and wastewater treatment; nitrogen is widely used for pipeline purging, atmosphere protection, and chemical transportation, serving as the “guardian” of safe production.

3. New Energy and Electronics: In semiconductor and photovoltaic cell manufacturing, ultra-high-purity nitrogen (above 99.999%) is an essential protective and carrier gas. It also provides high-purity gas support for new energy industries such as hydrogen fuel cells and lithium battery materials.

4. Healthcare and Food: Medical-grade oxygen is central to life support systems. In the food industry, nitrogen-filled packaging (Modified Atmosphere Packaging) effectively extends food shelf life and safeguards the global supply chain.

5. Aerospace: Whether it’s fuel for rocket launches or ensuring the inflation of aircraft tires, both require reliable gas solutions provided by cryogenic air separation.

III. Scientific Selection: Five Key Decision Factors

Nuzhuo Group experts emphasize that a successful air separation project begins with scientific selection. Clients should comprehensively consider the following five core criteria:

1. Gas Requirements and Purity

1.1 Demand Analysis: Determine the required gas type (oxygen, nitrogen, or argon), hourly usage (Nm³/h), and annual operating time.

1.2 Purity Level: Determine the purity requirement based on the end-use process. For example, general combustion requires only 93% oxygen, while the electronics industry requires ultra-high-purity nitrogen exceeding 99.999%. Purity directly determines the technical approach and cost.

2. Operating Pressure and Stability

2.1 Pressure Level: Determine the outlet pressure requirement for the product gas. Different pressure levels require different compressor and process designs, which are the primary factors affecting energy consumption.

2.2 Stability: Assess grid stability and tolerance for gas supply fluctuations, which will influence the design of the equipment control scheme and backup system.

3. Energy Efficiency and Operating Costs

3.1 Specific Energy Consumption: This refers to the amount of electricity consumed per unit of gas produced (kWh/Nm³). It is a core indicator for measuring the state-of-the-art air separation equipment and directly determines long-term operating costs.

3.2 Energy Management: Consider whether the energy mix can be optimized by utilizing waste heat from the plant and off-peak electricity prices.

4. Floor Space and Infrastructure

4.1 Space Constraints: Cryogenic air separation equipment is large-scale, requiring adequate space for installation, operation, and maintenance.

4.2 Supporting Conditions: Assess whether existing infrastructure, such as circulating water, power capacity, and wastewater treatment, meets the equipment requirements.

5. Automation and Intelligent Control

5.1 Control Level: Based on the capabilities of the operation and maintenance team, choose from intelligent control systems ranging from fully automatic “one-button start and stop” to semi-automatic control.

5.2 Remote Operation and Maintenance: Nuzhuo Group’s remote monitoring and early warning system enables predictive maintenance, maximizing equipment uptime.

Nuzhuo Group’s Value Commitment

“There’s no ‘best’ equipment, only the ‘most suitable’ solution,” said Nuzhuo Group’s Technical Director. “We are committed to in-depth communication with each customer, providing customized cryogenic air separation solutions based on their specific process requirements, budget, and site conditions. From feasibility studies and EPC turnkey projects to long-term operations and maintenance, Nuzhuo Group will be your trusted partner throughout the entire lifecycle.”

About Nuzhuo Group

Nuzhuo Group is a global leader in cryogenic technology, specializing in the research, development, manufacturing, and service of large and ultra-large air separation plants and industrial gas solutions. Its products and services span core industrial sectors such as energy, chemicals, metallurgy, and electronics, and it is internationally renowned for its superior energy efficiency and reliability.

For any oxygen/nitrogen/argon needs, please reach out to us ：

Emma Lv  

Tel./Whatsapp/Wechat：+86-15268513609

Email：Emma.Lv@fankeintra.com

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