Cheap production of oxygen by pressure swing adsorption - exporters 

Cheap production of oxygen by pressure swing adsorption is not a marketing slogan, but technically proven economics. We have observed this at 17 sites over the past three years: from pharmaceutical workshops in Kazakhstan to oxygen stations in hospitals in Uzbekistan. Where traditional supplies of oxygen in cylinders or tanks required 42–65 thousand rubles per month, PSA installations with proper selection and operation reduced costs to 18–24 thousand. Important: this figure is achieved not “out of the box,” but through accurate calculation of the load, taking into account peak modes and choosing a real adsorbent resource - not nominal, but tested in cycles.

Why "cheap" does not mean "inexpensive equipment"

Customers often ask, “What is the cheapest PSA unit?” This question is misleading. The cheapness of oxygen production is the 5-year total cost of ownership (TCO), not the nameplate price. We saw a RMB 3.2 million installation pay for itself in 14 months with a stable output of 93±0.5% O₂ at 3.5 bar and a consumption of 0.82 kWh/m³. And the other one - 25% cheaper - after 8 months began to require replacement of the carbon adsorbent every 4 months instead of the stated 24. The reason? Insufficient regeneration due to a simplified valve design and lack of compensation for pressure drops in the line.

We work with two types of adsorbents: carbon molecular sieves (CMS) and Li-X zeolites. CMS provide higher N₂/O₂ selectivity at small volumes - we choose them for mobile stations up to 30 m³/h. Zeolites - for stationary systems from 50 m³/h and above: they can withstand up to 120,000 cycles without loss of capacity if there are no oil vapors in the air above 0.01 mg/m³. That is why we always include a three-stage cleaning: coalescence filter → activated carbon adsorber → refrigeration dryer with an accuracy of ±0.5 °C.

Average power consumption for Chengdu Yizhi Technology Co., Ltd. installations — 0.75–0.88 kWh per cubic meter of oxygen 93%. This is below the market average (0.92–1.15 kWh/m³) because we use frequency control of the compressor rather than step control. In practice, this means: when demand decreases from 100 to 60 m³/h, the power does not drop abruptly, but smoothly - without overheating of the valves and vibration of the pipeline.

Exporters are not just suppliers, but implementation partners

Some people believe: “If the equipment works in Chengdu, it will work in Almaty.” But the temperature range from −35 to +45 °C changes the behavior of the adsorbent, and humidity above 85% requires enhanced dehumidification. We do not ship a "one size fits all" installation. For each order, we make adaptations: we increase the area of ​​the heat exchangers when operating below −20 °C, install anti-condensation heaters on the valves, and adjust the adsorption cycle time from 60 to 92 seconds at high humidity.

Our exporters undergo mandatory certification according to the methodology developed by Huaxi Technology: they must assemble and run a 10 m³/h test installation in their own conditions - from installation to receiving a gas acceptance certificate in accordance with GOST R ISO 8573-1:2013 (class 2:2:2). Only after this they receive the right to represent the PSA line. Now such partners work in 12 countries of the CIS and the Middle East. They do not sell a catalog - they provide a feasibility study with TCO calculations, a payback schedule and a list of necessary approvals (including Roszdravnadzor requirements for medical oxygen).

• Minimum power - from 5 m³/h (for laboratories and small clinics)
• Maximum - up to 500 m³/h (industrial oxygen stations)
• Standard delivery time is 65 days from the moment of signing the technical specifications
• Warranty on adsorbent - 24 months subject to operating conditions

What do you really need to get started?

The first is not equipment, but air analysis. We require data from the laboratory: oil, dust, SO₂, NOₓ content. Without this, even the best PSA will lose 15–20% of the adsorbent resource. Second is the location. A 100 m³/h installation occupies 8.2 m², but requires 1.2 m of free space around it for maintenance and heat dissipation. Third - power supply: stable voltage ±5%, without dips deeper than 15 ms. We do not recommend connecting PSA through a general-purpose UPS - only line-interactive models with an input voltage correction function.

On the websiteyzkjhx.ruThree documents are available: a typical TCO calculation for your volume, a site preparation checklist and video instructions for the initial start-up. There are also real test reports: how we achieved 93.2% O₂ at 4.2 bar and 22 °C in Tashkent, where summer humidity reaches 91%.

Low-cost oxygen production by pressure swing adsorption is the result of a systems approach, from feed air analysis to on-site training. Exporters who offer a “ready solution” often hide hidden costs. Those who work through the engineering cycle - from calculation to support - create real savings. It is not measured in the initial price, but in the stability of the outlet pressure, the absence of downtime and how many cubic meters of oxygen you get for each kilowatt-hour spent.