As global industrialization accelerates, oxygen and nitrogen have emerged as essential industrial gases, widely used in medical oxygen supply, chemical processing, electronics manufacturing, and renewable energy sectors. The demand for energy-efficient, cost-effective, and eco-friendly air separation technologies has grown significantly. With decades of expertise and innovation, China's air separation industry has become a global leader in gas separation solutions.
Key Air Separation Technologies: Cryogenic Distillation vs. Pressure Swing Adsorption (PSA)
Ambient air consists mainly of nitrogen (78%) and oxygen (21%), along with trace gases like argon and carbon dioxide. The most advanced methods for separating these components are cryogenic distillation and Pressure Swing Adsorption (PSA).
Cryogenic Distillation:
This leading technology involves compressing and cooling air to ultra-low temperatures (below -196°C), followed by fractional distillation based on the differing boiling points of oxygen and nitrogen. Chinese industry leaders such as Hangyang Group, Kylin Air Separation Group, and Dinak Mechanical Equipment Co. have made breakthroughs in large-scale cryogenic air separation units (ASU), known for their high efficiency, low energy consumption, and reliability, making them ideal for industrial gas production.
Pressure Swing Adsorption (PSA):
PSA technology uses specialized adsorbents to selectively separate oxygen and nitrogen. It is praised for its simplicity, flexibility, and low operational costs, making it perfect for small to medium-scale oxygen generators and nitrogen generators. Chinese companies are at the forefront of PSA technology, especially in producing medical-grade oxygen and ultra-high-purity nitrogen for electronics.
Why China’s Air Separation Industry Leads the Global Market
Technological Leadership:
Chinese firms excel in cryogenic and PSA technologies, with equipment performance meeting international standards. For example, Hangyang Group’s large-scale ASUs are used in global chemical, energy, and LNG projects.
Cost-Effective Solutions:
China offers high-quality air separation equipment at competitive prices, attracting clients worldwide.
Sustainability Focus:
Aligned with China’s “Dual Carbon” goals, the industry emphasizes green manufacturing and energy-saving technologies, reducing carbon emissions through optimized processes.
Global Market Expansion:
Chinese air separation equipment is exported to Southeast Asia, the Middle East, Europe, and beyond, solidifying China’s role as a key player in the global gas separation market.
Wide Applications of Oxygen and Nitrogen
Healthcare: High-purity oxygen is critical for respiratory therapy, ICU patients, and COVID-19 treatment.
Chemical Industry: Oxygen enables oxidation reactions, while nitrogen acts as an inert gas for safety.
Energy Sector: Oxygen is used in coal gasification and LNG production; nitrogen aids in oil recovery and storage.
Electronics: Ultra-high-purity nitrogen is vital for semiconductor manufacturing and PCB production.
Dinak’s Commitment to Innovation and Sustainability
Dinak specializes in gas separation technology, providing innovative and environmentally conscious solutions. With a strong focus on research and sustainable energy, the company supports advancements in industrial gas applications and cleaner production methods.
