PSA Oxygen Generator for Combustion Enhancement | 90–95% O₂ | Qingdao Green Power

Combustion enhancement raises the oxygen content of combustion air, and a PSA oxygen generator supplies that oxygen on site by separating it from compressed air with zeolite molecular sieve (ZMS) in a twin-tower pressure swing adsorption system at 90–95% purity.

Published output is 1–500 Nm³/h at an outlet pressure of 0.1–0.4 MPa, with energy use of 0.3 to 0.5 kWh per Nm³ of oxygen and start-up to rated purity within 30 minutes.

Glass manufacturing uses the generator for combustion efficiency improvement, and metal processing applies it to combustion enhancement alongside cutting and welding support.

Because generation is on site, the oxygen supply can be sized to the combustion duty rather than to a delivered-gas package.

The PSA oxygen range is published as a purity and capacity configuration rather than a numbered model table: fix the required oxygen flow first, then confirm purity, outlet pressure and energy use for the duty.

• Adsorption towers: two adsorber vessels alternate between adsorption and regeneration, so the oxygen supply is continuous.
• Molecular sieve: zeolite molecular sieve (ZMS) selectively adsorbs nitrogen from the compressed air so oxygen passes through as product gas at 90–95% purity.
• Air dryer: the package includes an air dryer that brings the compressed-air moisture load down so the feed-air dew point requirement is met before the air reaches the sieve bed.
• Filtration: filtration stages remove oil aerosol and dust carried over from the compressor and receiver, protecting the sieve bed.
• Air receiver: a buffer tank (air receiver) between the compressor and the PSA towers steadies the feed-air supply.
• Control cabinet: PLC automatic control with an optional HMI touch screen; the control cabinet manages the valve cycle and the operating parameters.
• Purity monitoring: an oxygen analyser monitors the purity of the product oxygen, and its calibration is checked on schedule.
• Feed air: compressed air at 0.6–0.8 MPa with a dew point of -40°C or lower, oil-free.

• Combustion air enrichment: raises the oxygen content of combustion air to improve combustion.
• Glass manufacturing: applied to combustion efficiency improvement in glass production.
• Furnaces and kilns: feeds oxygen-enriched combustion air to furnaces and kilns.
• Metal processing: used for combustion enhancement alongside cutting and welding support.
• On-site generation: removes delivered-gas logistics from continuous combustion duty.
• Peak firing support: adds oxygen capacity when a furnace or kiln is pushed above its normal firing rate.

• Confirm the required purity and flow, since these set the ZMS charge and the system size.
• Check the outlet pressure against the 0.1 to 0.4 MPa range and the energy use of 0.3 to 0.5 kWh per Nm³ when sizing power and operating cost.
• Confirm the feed air is oil-free with a dew point of -40°C or lower, conditioned by an air dryer and filtration stages.
• State the burner or kiln duty and the number of firing points so the flow figure covers the total demand.
• Confirm the operating schedule, since continuous combustion duty favours on-site generation over delivered gas.
• Allow for the 30-minute start-up to rated purity when planning the firing schedule after a shutdown.