PSA/VPSA Process Gas Compressors

PSA/VPSA Process Gas Compressors

Oil-free piston compressors dedicated to PSA/VPSA feed-air, product oxygen, hydrogen, and CO duties — 2–500 Nm³/min, 0.1–6 MPa. Serving industrial oxygen generation, coke oven gas H₂ purification, and wastewater aeration. API 618.

SKU: 11495405d0ab Category: Tags: , , , ,

PSA/VPSA Process Gas Compressors

Dedicated oil-free piston compressors for pressure swing adsorption feed air, product oxygen, hydrogen, and carbon monoxide — serving traditional industry, new energy, waste-gas treatment, and wastewater sectors.

Flow: 2–500 Nm³/minPressure: 0.1–6.0 MPaPower: 5.5–3,000 KWAPI 618

Product Overview

Pressure swing adsorption and vacuum pressure swing adsorption (PSA/VPSA) are the dominant industrial methods for producing oxygen, hydrogen, and separating carbon monoxide from mixed gas streams. Ever Power has dedicated long-term engineering focus to the compressor equipment integral to these processes — from feed-air supply through to product-gas boosting and tail-gas recycle. The result is a range of oil-free reciprocating compressors proven in traditional industrial settings, new energy plants, waste-gas treatment facilities, and wastewater treatment stations. Products comply with API 618 and relevant national standards.

Key application areas include: PSA/VPSA oxygen generation (medical, aquaculture, industrial combustion enhancement); coke oven gas and syngas hydrogen purification; industrial CO separation for chemical synthesis; and combined systems producing multiple product gases from a single feed source.

Key Technical Parameters

2 – 500

Flow Capacity (Nm³/min)

0.1 – 6.0

Discharge Pressure (MPa)

5.5 – 3,000

Motor Power (KW)

1.5 – 150 T

Piston Force

O₂ / H₂ / CO

Media

Z / M / D / P / L

Frame Types

PSA/VPSA Process Gas Compressors — Key Technical Parameters

Representative Models

PSA/VPSA compressors · API 618 · Voltage: 380 V or 6 kV/10 kV
Model Medium Flow (Nm³/min) Discharge Pressure (MPa)
ZW-50/3.5 O₂ 50 0.35
DW-70/8 H₂ 70 0.80
4MW-140/7.3 CO 140 7.3
3ZW-50/0.15-11 H₂ 50 0.15–11
LW-69/0.15-3.6 H₂ 69 0.15–3.6
ZW-55/4 CO 55 0.40
4MW-19.5/1.5-60 H₂ 19.5 1.5–60
DW-13/21-55 H₂ 13 21–55
ZW-6/3 H₂ 6 0.30
PSA/VPSA Process Gas Compressors — Representative Models

Applications

PSA/VPSA Oxygen Generation

Feed-air and product O₂ compression for medical oxygen plants, aquaculture aeration, industrial combustion enhancement, and wastewater treatment bioreactors.

Coke Oven Gas H₂ Purification

PSA-based hydrogen recovery from coke oven gas streams at steelworks; product hydrogen boosted to pipeline or storage pressure.

⚗️

Syngas CO Separation

Carbon monoxide separation from mixed synthesis gas for oxo-synthesis, carbonylation reactions, and Fischer-Tropsch feed preparation.

Methanol Tail-Gas H₂ Recovery

Hydrogen recovery from methanol plant tail gas using PSA, reducing feedstock consumption and improving overall plant efficiency.

New Energy Waste-Gas Treatment

Off-gas compression and recirculation in new energy manufacturing processes requiring gas purity control and recovery.

Wastewater Treatment Aeration

PSA oxygen supply for aerobic bioreactor aeration as an energy-efficient alternative to atmospheric air blowers.

For high-pressure cylinder filling of the oxygen and nitrogen produced by PSA/VPSA systems, our Air Separation Oxygen / Nitrogen / Argon Compressors cover filling pressures up to 16.50 MPa.
PSA/VPSA Process Gas Compressors — Applications

Customer Case Studies

★★★★★

"We installed DW-70/8 hydrogen compressors on the PSA outlet. After 14 months of continuous operation, hydrogen purity downstream has consistently exceeded 99.95%. No unplanned maintenance events."

China · Steelworks

PSA hydrogen purification from coke oven gas · 5.0 / 5

★★★★★

"The ZW-50/3.5 units sized for our 200 Nm³/h VPSA oxygen system have delivered consistent 93% purity oxygen at 0.35 MPa. The compressors handled the cyclic PSA pressure swings without any valve issues in the first 8,000 hours."

Vietnam · Medical Oxygen Plant Operator

VPSA oxygen product compression · 5.0 / 5

★★★★☆

"We replaced air blowers with a PSA oxygen system using Ever Power feed-air and product compressors. Oxygen transfer efficiency improved dramatically and total energy cost for aeration dropped by roughly 35%."

Brazil · Wastewater Treatment Utility

PSA oxygen aeration supply · 4.0 / 5

Frequently Asked Questions

What is the difference between PSA feed-air compressors and product-gas compressors?
Feed-air compressors supply filtered atmospheric air to the adsorbent bed at the PSA inlet pressure (typically 0.3–0.8 MPa for VPSA or 0.5–1.2 MPa for PSA). Product-gas compressors take the purified O₂, H₂, or CO from the bed outlet and boost it to storage or distribution pressure. Both types are available in this range.
How do these compressors handle the cyclic pressure swings in PSA duty?
PSA cycles typically repeat every 60–180 seconds, causing inlet and outlet pressure fluctuations. Suction and discharge pulsation dampeners are designed into the piping package, and valve timing on the reciprocating unit is optimised for the expected pressure range. The result is smooth, stable flow through each adsorption-desorption cycle.
Can a single compressor serve multiple PSA beds simultaneously?
Yes. A common discharge manifold with individual bed inlet valves allows one compressor to serve two or more beds in staggered cycles. This is a standard configuration for VPSA oxygen systems where bed A is being pressurised while bed B is desorbing.
What hydrogen purity can be achieved at the compressor outlet after PSA?
PSA hydrogen purity from typical coke oven gas or syngas feed reaches 99.9–99.999 vol% H₂. The compressor does not affect purity — its role is to maintain the correct pressure differential across the bed. Downstream analysis equipment verifies purity independent of compressor operation.
Are these compressors suitable for CO (carbon monoxide) service?
Yes. CO is handled in dedicated CO-service models with materials selected to resist carbonyl formation, and with provision for nitrogen purging on shutdown to prevent accumulation of toxic or flammable gas inside the casing. CO-specific seal and valve materials are standard for these applications.
For the full hydrogen compression range beyond PSA duties, see our Hydrogen & Hydrogen Energy Compressors — covering electrolysis, SMR, HRS, and high-pressure cylinder filling applications.

Ready to Move Forward?

Share your PSA/VPSA process schematic, gas composition, bed inlet/outlet pressures, and cycle timing — our engineering team will recommend the right compressor model and package configuration within 48 hours.

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