KSTK KNA-SD 99.999% PSA Multi-Bed Nitrogen Gas Generator (Combined Model)

• Customization: Available
• Application Fields: Chemical, Electronic, Food, Medical, New Energy, Petroleum, Pharmaceutical
• Certification: CE, ISO, ASME
• Model NO.: KNA-SD
• Noise Level: 60~85 dB
• Purpose: Gas Separation
• Types: Psa Gas Generator
• Usage: Industrial
• Voltage & Frequency: Customizable
• Color: Green
• Dimension: See Unit Spec
• Weight: See Unit Spec
• Unit Installation Type: Skid Mounted
• Remote Control: Yes
• Remote Monitoring: Yes
• Multi-Language Support: Yes
• Multi-Status Display: Yes
• Intelligent Alarm: Yes
• Transport Package: Wooden Package
• Trademark: KSTK
• Origin: Prc

Product Description

Combined Nitrogen Generator
One skid solves it all!
Our compact nitrogen generator integrates a refrigerated air dryer, a precision filtration system, an air buffer tank, a nitrogen buffer tank, and a dual-tower nitrogen generator into a single skid-mounted unit. Users simply need to connect the air inlet to an air compressor and the nitrogen outlet to the nitrogen application. This design greatly optimizes the user experience by eliminating the need for installation and commissioning, saving both space and time, while providing a more efficient and convenient gas supply solution.
 

Technical Specification
Nitrogen Purity	99.999%
Nitrogen Flowrate	5~300 Nm^3/hr
Nitrogen Dew Point	-60~-30 ºC
Nitrogen Pressure	6~8 Bar
Air Inlet Pressure	8~10 Bar
Air Inlet Temperature	20~35 ºC
Voltage/Frequency	220V/50~60Hz

Note: Specific requirements can be made upon request
 

Model	Air to Nitrogen Ratio (Nm^3/hr)		Connection  Dimension(DN)		Air Dryer Model	Unit Structure
	Air Consumption	Nitrogen Output	Inlet	Outlet
KNA-5SD	26	5	15	15	KRD-015F	Combined
KNA-10SD	52	10	15	15	KRD-026F	Combined
KNA-20SD	104	20	20	15	KRD-039F	Combined
KNA-30SD	156	30	25	15	KRD-039F	Combined
KNA-60SD	312	60	40	20	KRD-085F	Standard
KNA-100SD	520	100	50	20	KRD-140F	Standard
KNA-200SD	1040	200	65	40	KRD-250F	Standard
KNA-300SD	1560	300	65	40	KRD-365F	Standard

Note:Customized Unit Acceptable
Technical specifications subject to change without notice

Product Overview

Pressure Swing Adsorption Technology
Pressure Swing Adsorption (PSA) is a gas separation technology. Its principle is based on the difference in the adsorption properties of different gas molecules by an adsorbent (such as carbon molecular sieve), which allows the separation of gas mixtures. This technology uses air as the raw material and employs highly efficient, highly selective adsorbents to selectively adsorb nitrogen from the air, thereby achieving nitrogen-oxygen separation.

Gas Generator vs. Traditional Gas Supply
• No rental fee
• No transportation fee
• No storaging fee
• No need to wait
• Eliminates safety hazards in handling pressurized cylinders or liquid nitrogen.

Product Characteristic

Intelligent Alarm System
• Combines sound and flashing warnings to promptly alert of equipment abnormalities, ensuring operational safety.

Automatic Venting System
• Automatically vents unqualified nitrogen and, once purity is met, automatically opens the nitrogen outlet valve, providing pure nitrogen with no user intervention required.

Reliable Valves
• Made from premium 304 stainless steel
• Resistant to high pressure and corrosion
• Ensuring 2,000,000 cycles of stable operation

Modular Valve Manifold Design
• Patent modular valve manifold design for high efficiency and stability, reducing leakage risk, and minimizing maintenance time.

Food-grade piping
• Made from premium 304 stainless steel
• Enhanced corrosion resistance
• Significantly reducing system pressure drop

Multi-Function PLC
• User-friendly interface
• Standard 485 and Ethernet connectivity
• Multi-status/language display
• Remote start/stop control

High-Quality Molecular Sieve
• Customize ordered molecular sieves with excellent adsorption performance, ensuring high nitrogen output.

Product Applications

Metallurgy
Our nitrogen generator for metallurgy industry is widely used in annealing protective gas, sintering protective gas, nitriding treatment, furnace washing and blowing gas. It is especially suitable for heat treatment, bright annealing, protective heating, powder metallurgy, copper and aluminum processing, magnetic material sintering, precious metal processing, bearing production and many other fields.

Oil & Gas
Our nitrogen generator for oil and gas is mainly used in onshore and offshore oil and gas extraction. Its applications include nitrogen protection, transportation, covering, pipeline network replacement, emergency repair, nitrogen injection for oil extraction, dilution of nitrogen content, liquefied natural gas (LNG) nitrogen participation and other key areas.

Chemical
The main applications of our nitrogen generator for chemical industry include nitrogen covering, blowing, replacement, cleaning, pressure conveying, chemical reaction stirring and chemical fiber production protection. In addition, it is also used in the fields of synthetic fiber nitrogen charging and pressing and wire drawing against oxidation.

Coal Mining
Our nitrogen generators for the coal mining industry are an innovative product series developed in response to the demands of the underground coal mining market. These devices can effectively inhibit gas explosions and coal dust explosions in underground coal mines, providing a strong guarantee for safe underground coal mining operations.

Semiconductor
Our nitrogen generators for electronics industry is widely used in encapsulation, sintering, annealing, reduction and storage of electronic products. In addition, nitrogen is used in semiconductor and integrated circuit manufacturing for atmosphere protection, cleaning and chemical recycling and other key links, and is an important gas resource for the treatment of large-scale integrated circuits, color TV picture tubes, TV and tape recorder components and semiconductor components.

Food Preservation
Our nitrogen generator for food industry has a wide range of applications, covering a variety of aspects such as grain green storage, food nitrogen filling and packaging, vegetable preservation, wine sealing (canning) and preservation, seafood preservation, as well as pest control and nitrogen sealing.

Rubber & Tire
Our nitrogen generators in the tire and rubber industry are mainly used for atmosphere control in rubber mixing and vulcanization processes. By using nitrogen in these processes, an inert atmosphere environment can be formed, effectively preventing oxidation and degradation of rubber materials at high temperatures.

Biopharmaceutical
The application of our nitrogen generator for pharmaceutical industry mainly focuses on the production, storage, encapsulation and packaging of pharmaceuticals. In the pharmaceutical industry, the use of nitrogen includes, but is not limited to, nitrogen-filled treatment of western medicine injections; nitrogen-filled storage and containers of pharmaceuticals; and as a source of air for the pneumatic conveyance of medicinal materials and the protection of pharmaceutical raw materials. 

Laser Cutting
Our nitrogen generators for the laser cutting industry play a key role in providing an inert atmosphere to prevent material oxidation during the cutting process, especially around the edges when cutting oxidizable materials such as stainless steel and aluminum alloys, helping to achieve a smoother, cleaner cutting surface and improved cut quality, as well as reducing the heat-affected zone to preserve material properties. In addition, nitrogen reduces the risk of combustion when cutting flammable materials.

 

Our Profile

Zhejiang KSTK Manufacturing Technology Co., Ltd. is a global leader in gas separation and purification systems, delivering high-efficiency solutions across industries such as healthcare, chemicals, electronics, and food processing. Established in 2004, we specialize in PSA nitrogen generators, PSA/VPSA oxygen generators, and air purification systems. With over two decades of expertise, we prioritize innovation and quality, adhering to ISO 9001, ISO 14001, ISO45001, ISO 13485, CE, ASME, CRN, and other international certifications.

Our 30,000 m² facility in Hangzhou integrates advanced automation and precision testing equipment. Through rigorous quality control and lean manufacturing, we optimize production efficiency and reduce lead times, ensuring reliable equipment performance. KSTK's products meet global standards and serve clients in over 50 countries.

We collaborate closely with customers from design to maintenance, offering tailored technical support. Whether providing medical-grade oxygen solutions or high-purity systems for metallurgy, KSTK empowers clients to achieve operational excellence through cutting-edge technology and unwavering commitment to service.

 

Our Service

As a comprehensive gas solutions provider, KSTK not only offers high-quality products but also strives to deliver exceptional customer service. Our team of experts provides extensive product consultation and advice, helping you address any questions or requirements you may have. Whether through WhatsApp, email, or phone, our professionals are committed to offering prompt and efficient support.

Complete Product Line
In collaboration with our sister companies, KSTK offers a full range of gas equipment, including air compressors, air purification systems, nitrogen and oxygen generation units, gas booster systems, and various pneumatic components. Our technical team is highly knowledgeable about each product, ensuring that we provide you with professional support and service. When you partner with us, you won't need to worry about the premium prices of third-party suppliers or compatibility issues between different brands. We offer a one-stop solution and aim to be your ideal gas solutions partner.

Customized Design
Our technical team is proficient in using a variety of software such as CAD, SolidWorks, COMSOL, Aspen, and SIMENS SMART V4, allowing us to provide a wide range of services, from equipment structure and performance parameters to aesthetic design and software customization. With our deep expertise and extensive experience, we will tailor the best gas solutions based on your consumption needs and installation environment.

Testing & Commissioning
Our quality inspection and commissioning team has over 10 years of experience in the installation and commissioning of gas equipment. Every unit undergoes a thorough inspection and tuning by our engineers before leaving the factory to ensure it meets your specific requirements and complies with international regulations.

On-site Installation & Maintenance
With rich service experience worldwide, our service team is equipped to ensure the highest quality service. They will handle on-site commissioning and installation of your equipment, provide necessary spare parts, and offer maintenance to ensure your systems operate at their optimal performance.

Shipping & Packaging
We have provided export services to clients in over 40 countries and regions. We assist you in selecting the most suitable freight carriers, including air freight, sea freight, and express shipping. All export goods are carefully packaged and reinforced, with required shipping labels attached to ensure a smooth and secure transportation process.

Warranty & After-Sales Service
KSTK offers comprehensive after-sales service and efficient repair support for all our customers. During the warranty period, we provide free product maintenance and spare parts support, ensuring that your equipment remains in optimal working condition.

Our Strength

R&D Strength
• 17 senior engineers in R&D
• Annual R&D investment: $2M
• Patents: 3 inventions, 25 utility models

Design & Development Tools
• Solidworks (3D mechanical design)
• Comsol (multi-scenario fluid simulation)
• Aspen Plus (process optimization)
• CFturbo & PumpLinx (fluid performance testing)
• KSTouch (proprietary HMI software)


Manufacturing Equipment
• Automated Welding Machine
• Automatic Cutting Machine
• Laser Cutting Unit
• Shot Blasting Unit
• Pipe cutting Machine

Quality Assurance Procedure
• Incoming material quality inspection process

• Adsorbent performance testing
• Gas source quality testing instruments
• Equipment performance testing platform
• Pressure leakage experimental data
• Multi-functional experimental testing room 

Our Certificates

FAQ

How to Choose the Air Compressor?
1. The selection of an air compressor is influenced by various factors. Typically, you should select the appropriate pressure, capacity, and oil content based on downstream oxygen demand. 
2. Users may also provide their own air compressor (but please contact our technical department before purchasing to ensure compatibility with our products).
3. Recommended brands: Atlas Copco, Ingersoll Rand, KSTK

How to Choose a Purification System?
1. The selection of a purification system is similarly influenced by various factors. Typically, you should select the appropriate model, capacity, oil content, and dew point based on your specific gas requirements. 
2. Users may also provide their own purification system (but please contact our technical department before purchasing to ensure compatibility with our products).
3. Recommended brands: Atlas Copco, KSTK

How Often Should the Oxygen Generator Be Maintained?
1. The advantage of choosing our oxygen generator is that it requires minimal maintenance. All system components have been rigorously tested to ensure they can operate for tens of thousands of hours. The specific maintenance interval depends on the operating conditions of the equipment. 

How Often Should the Filtration System Be Maintained?
1. Typically, the maintenance interval for each filter element is 2000 hours. The specific maintenance interval depends on the operating conditions of the equipment (Refer to Pressure Differential Gauge) 

What is the Warranty Period for the Gas Generators?
1. All models of our gas generators come with a 24-month warranty.