The main types of oxygen generators include multi-tower PSA oxygen generators, modular PSA oxygen generators, combined PSA oxygen generators, containerized PSA oxygen generators, and VPSA oxygen generators.

Each type is designed for different oxygen flow ranges, installation conditions, and application needs. PSA systems are widely used for reliable on-site oxygen supply, while VPSA oxygen generators are suitable for large-scale oxygen production with higher energy efficiency.

An oxygen generator works by separating oxygen from compressed air using molecular sieve adsorption technology. In a PSA oxygen generator, compressed air passes through zeolite molecular sieves that selectively adsorb nitrogen, allowing oxygen-enriched gas to be collected as the product gas. The adsorption and regeneration process runs automatically in cycles to provide a continuous oxygen supply.

An on-site oxygen generator allows users to produce oxygen directly at their facility, reducing dependence on external oxygen suppliers. Compared with oxygen cylinders and liquid oxygen delivery, it offers:

· Continuous oxygen supply without delivery delays

· Lower long-term operating costs

· Reduced storage and transportation risks

· Flexible oxygen production based on actual demand

· Easier oxygen supply management

· Medical facilities and oxygen supply stations

· Aquaculture oxygenation systems

· Metal cutting and processing

· Glass manufacturing

· Wastewater treatment

· Mining operations

· Chemical and industrial processes

· Laboratory and research applications

Each application requires different oxygen flow rates, purity levels, and pressure requirements.

The cost of an oxygen generator depends on several factors, including:

· Oxygen production capacity (Nm³/hr)

· Oxygen purity requirement

· Outlet pressure

· System configuration

· Air compressor and air treatment requirements

· Installation conditions

A customized oxygen generation system is usually designed according to the user's specific gas demand to achieve the best balance between investment and operating cost.

The main difference is the operating pressure and system design.

· A PSA oxygen generator uses compressed air and is suitable for small to medium oxygen production requirements. It provides flexible operation and easy installation.

· A VPSA oxygen generator operates under vacuum conditions and is mainly designed for large-scale oxygen production with improved energy efficiency.