At present, oxygen generation technologies are mainly categorized into three types: cryogenic separation, pressure swing adsorption (PSA/VPSA) and membrane separation. Each technical route has distinct advantages and disadvantages in terms of oxygen purity, oxygen output capacity, energy consumption, initial investment and operation & maintenance complexity, leading to clear differentiation in their application scenarios.
Diffused Oxygen Generation & Indoor Oxygen Enrichment Systems
These systems are primarily deployed in enclosed or semi-enclosed spaces such as hotels, high-end clubs, chess and card rooms, offices and residences. Instead of supplying high-purity medical oxygen, their core function is to raise ambient oxygen concentration (generally to 23%–25%) to improve air quality, relieve fatigue, and enhance concentration and overall comfort. Most of such systems adopt small and medium-sized PSA or membrane separation oxygen concentrators, which are required to operate with low noise, feature an environment-integrated appearance, support intelligent control (e.g., linkage with fresh air systems) and allow easy maintenance.
Plateau & High-Altitude Dedicated Oxygen Generation Equipment
This segment sets extremely high requirements for equipment reliability, environmental adaptability and output stability. In plateau regions, thin air, low atmospheric pressure and large temperature differences between day and night will drastically reduce the efficiency of ordinary oxygen concentrators or even render them inoperable. Dedicated plateau oxygen concentrators adopt enhanced designs for air intake systems, molecular sieve performance, weather resistance of compressors and overall heat dissipation, so as to continuously produce oxygen with qualified concentration and flow rate under low-pressure conditions and safeguard users’ health and personal safety.
VPSA Oxygen Generation Equipment
As a medium-to-large scale oxygen supply solution, Vacuum Pressure Swing Adsorption (VPSA) technology outperforms traditional cryogenic separation in scenarios with medium oxygen demand (tens to thousands of standard cubic meters per hour). Its strengths include quick startup, relatively low energy consumption, high automation and flexible operation. It is widely used in metallurgy, chemical engineering, glass manufacturing, wastewater treatment and centralized oxygen supply for medical centers. The core competition focuses on energy consumption control, system stability, precise oxygen purity guarantee and full-lifecycle operating costs.
Portable & Household Oxygen Concentrators
They are mainly designed for personal healthcare and home oxygen therapy for patients with chronic respiratory diseases. The equipment needs to be lightweight, quiet and reliable, and capable of long-term continuous operation. Molecular sieve technology dominates this market. Key competitive factors include service life, oxygen concentration stability, accurate flow regulation and humanized design.