HANGZHOU NUZHUO TECHNOLOGY GROUP CO.,LTD.

NUZHUO PSA oxygen generation automatic device, based on the pressure swing adsorption (PSA) technology, uses compressed air as the raw material. It can stably produce oxygen with a purity of 93% – 95%, with a gas output ranging from 3 to 200 Nm³/h.It is suitable for the gas demand of users of different scales, enabling on-site self-generated oxygen and eliminating the numerous inconveniences of purchasing gas cylinders for supply.

Every detail of the product is designed by NUZHUO based on the actual needs of the customers:

1.Tank in place

All pipe spools are prefabricated and numbered in the workshop—not field-fitted. On-site connection and start-up take only half a day, saving you time, effort, and cost.

2.Pad layer into the tower

NUZHUO add a coconut coir mat at both tower top and bottom to disperse high-velocity gas, protect the sieve, and ensure stable purity!!!

Without the coconut coir mat, the molecular sieve gets pulverized by repeated gas flow impact, lowering purity after 1–2 years.

3.Molecular sieve loading

Some small factory purchased raw materials at low prices and sold refurbished machines at a low cost. However, within less than a year, the purity of the products had already declined!

But NUZHUO use brand-new, high-quality molecular sieves in original factory packaging (blue bucket), with a service life of over 10 years. They ensure stable machine performance and, in the long run, significantly reduce energy consumption as well as maintenance and operation costs.

4.Vibrate and compact

Some small factory simply sealed the container after adding a small amount of molecular sieves!

However, NUZHUO use an crane to lift the blue vibration motor to the flange opening at the top of the tower, adding more molecular sieve while vibrating, so that the particles settle and compact layer by layer，until the molecular sieve is completely filled and seamless. This step determines whether the molecular sieve lasts 5 years or 1 year.

5.Three-layer panel protection

NUZHUO provides three layers of protection for the molecular sieve! The installation is complete only when the distribution plate and upper and lower cushion layers—three layers of protection—are in place.After the molecular sieve is vibrated and compacted near the tower top, a coconut coir mat is laid, then a perforated stainless steel distribution plate is installed to ensure uniform gas flow across the tower cross-section, and finally the top cover is sealed.

Without the plate, gas passes only through the center, making peripheral sieve ineffective—a key reason purity is fine at commissioning but drops after half a year.

6.Tighten the flange bolts

We have reached the final stage of equipment installation, and NUZHUO will still not slack off—each piece of equipment will still be assigned two dedicated bolting workers. The workers will tighten the flange bolts evenly in a diagonal sequence, repeating the operation 2–3 times, to ensure that the sealing face is subjected to uniform force.

The top-cover bolts must be tightened evenly in a diagonal sequence over 2–3 passes, and must not be fully tightened on one side in a single pass. One-sided force will press the sealing face off-center and deform the flange, causing gas leakage from this seam after operation. Some small factories simply do not have the spare labor budget to assign workers to this step.

7.Soapy water leak test.

NUZHUO will also assign a worker to carry out a secondary check of the equipment’s sealing integrity. The worker will spray soapy water at the valves; if bubbles appear at the flange joints, it indicates that the seal is not tight, and the worker will rework it on the spot and replace the gasket again!!!

 8.System integration test

NUZHUO will arrange full-system integrated commissioning, connecting and testing the screw air compressor, refrigerated dryer, dual adsorption towers, and control cabinet as a complete system. Every unit is repeatedly tested in our workshop before leaving the factory, ensuring that the machine you receive has been verified and will reliably produce qualified oxygen!

9.Double-layer protection before shipment.

NUZHUO PSA series units ship with double-layer protection: foam padding for shock absorption, then stretch film sealed around the exterior. This prevents impact, scratches, moisture and rust during transport, protecting precision components such as tanks, piping, pressure gauges and valves for intact delivery on site.

Thanks to its efforts and capabilities, the NUZHUO PSA oxygen generator has been applied in multiple mainstream fields such as healthcare, environmental protection, and industry：

Medical / Hospital:Cylinder filling and pipeline supply

Industrial Combustion:Furnace oxygen enrichment

Wastewater Treatment:Aeration and oxidation

Aquaculture:Fish farming oxygen supply

Chemical / Glass:Oxidation reactions and furnace enrichment

Metallurgy / Steel:Smelting and furnace oxygen enrichment

Compared with the traditional model of purchasing bottled or liquid oxygen, the NUZHUO PSA oxygen generator produces oxygen on-site, significantly reducing long-term usage costs. The gas source is under the control of the user, not subject to transportation or supply scheduling restrictions. The modular structure makes it easy to layout and install. It is the preferred solution for scenarios with medium to low oxygen demand.

NUZHUO has been continuously deepening its focus on the field of gas separation equipment. Relying on mature PSA and air separation technologies, it can provide customized oxygen generation solutions, along with system design, commissioning, and after-sales support, to ensure stable oxygen supply for various industries.

NUZHUO

NEW GAS-SMALL-SCALE CRYOGENIC ASU EXPERT

You can find us by follows:

Elena Liu Tel./Whatsapp/Wechat:+86-15531448603

Email :elena@hznuzhuo.com