Your Professional Small Liquid Nitrogen Generator Supplier
Our goal is to be your reliable partner for small liquid nitrogen generator in China. LDH GAS SYSTEMS COMPANY LIMITED is a high-tech enterprise specializing in the research, design, manufacturing, sales and service of various air separation equipment and low-temperature application equipment. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.
Why Choose Us
Our certifications
We have obtained ISO9001 quality management system certification and EU-recognized EC/EU certificates. All pressure vessels comply with ASME standards.
Production equipment
Our factory facilities and scale have been comprehensively upgraded. Our nitrogen generators, liquid nitrogen generators, and oxygen generators have all been equipped with intelligent remote monitoring systems, enabling cloud-based management of equipment operating data and integration with a mobile app for more convenient operation.
Production market
Our products are highly sought after by our customers and are exported to countries and regions including Southeast Asia, the Middle East, America, and Europe.
Our services
Our team of experts will recommend the most suitable products according to customer needs and provide detailed consultation, we ensure timely delivery, and we provide long-term service support.
Advantages of Small Liquid Nitrogen Generator

Can be used for a variety of industries: Small nitrogen generators can be used in many industries where high purity nitrogen is required. Generators can be used in the field as well as in industrial settings.
Convenient size, space efficient: Nitrogen generators take up a minimal amount of space compared to nitrogen cylinders. Many businesses find they must keep more cylinders on hand than they need at any given time to ensure a continuous supply.
Will not run out: Nitrogen cylinders contain a finite amount of nitrogen. When that nitrogen runs out, the business owner May not have enough nitrogen to continue industrial processes unless they have more cylinders. This is the continuous trouble with nitrogen cylinders: They must be constantly replaced.
Cost efficient: Nitrogen generators have a rapid roi when compared to nitrogen cylinders. Whereas cylinders represent a continuous cost for any business that uses them, nitrogen generators are available for a one-time cost.
Environmentally friendly: Cylinders must be delivered via transportation that burns fossil fuels, which makes cylinders the less environmentally friendly option for any commercial business that requires nitrogen. Nitrogen generators, on the other hand, are delivered once and then can be used on-site forever after.
Specification of Small Liquid Nitrogen Generator
|
Model |
LPLN-10 |
LPLN-20 |
LPLN-40 |
LPLN-80 |
LPLN-120 |
|
Yield |
0.3-0.4L/H 8-10L/day |
0.8-1L/H 20-24L/day |
1.6-2L/H 40-50L/day |
3L/H 72L/day |
5L/H 120L/day |
|
Purity |
99% |
||||
|
Power (KW) |
2 |
4.5 |
7.5 |
12.5 |
15 |
|
Floor Area (㎡) |
1 |
1.5 |
3 |
3.5 |
3.5 |
|
Equipment size MM |
750*650*1500 |
1150*850*2000 |
1250*2000*2000 |
1250*2000*2000 |
1250*2000*2000 |
|
Required room area ㎡ |
>> 5 |
>> 6 |
>> 10 |
>> 15 |
>> 15 |
|
Ambient temperature requirements |
0-30 ℃ Good ventilation |
||||
|
One meter noise (Db) |
<65Db |
<65Db |
<65Db |
<65Db |
<65Db |
|
Cooling mode |
Air-cooled |
Air-cooled |
Air-cooled |
Air-cooled |
Air-cooled |
|
Amount of nitrogen (m³/h) |
1 |
2 |
4 |
6 |
8 |
|
Nitrogen dew point (℃) |
-60 ℃ |
||||
|
Suggestion on matching of liquid nitrogen tank (L) |
30 |
50 |
100 |
175 |
300 |
|
Voltage frequency |
220VAC 1p 50Hz |
380VAC 3P 50Hz 220VAC 1P 50Hz |
|||
|
Nitrogen pressure (Mpa) |
0.8 |
||||
|
Other |
Such as non-standard voltage frequency, altitude> 1000 meters, purity 99.9%, need to be customized; Equipment above 100L/h is customized according to customer's site conditions |
||||
High purity: Nitrogen purity ≥99%, meeting strict industrial standards.
Output capacity: 8-120 l/day, with models like lpln-120 producing up to 5 l/h.
Material construction: Stainless steel components for corrosion resistance, combined with high-efficiency molecular sieves for optimal adsorption.
Energy-efficient design: Adopts mixed refrigerant refrigeration technology, reducing energy consumption by 30% compared to traditional systems.
Ompact footprint: Enclosed box-type design, occupying only 1-3.5 m².

Application of Small Liquid Nitrogen Generator

Laboratories and research
Essential for cryopreservation of biological samples (cells, tissues, DNA), cooling instruments like mass spectrometers, and supporting high-precision experiments.
Food and beverage
Enables flash-freezing and rapid preservation of food products, improving texture and quality during processing and packaging.


Industrial operations
Applied in processes like cryogenic cleaning, shrink-fitting of metal components, and supporting advanced manufacturing and 3D printing.
Environmental applications
Utilized for solidifying pollutants in soil and groundwater, allowing for easier excavation and treatment.

Air compressor: Takes in atmospheric air and compresses it to a high pressure, which is a necessary first step for the nitrogen generation process.
Air purification unit: This unit removes impurities such as water vapor, carbon dioxide, and fine particles from the compressed air, as these can clog the system and interfere with the generation process.
Control system: A sophisticated system, often including a plc and sensors, that automates the entire operation, managing the cycles of the psa towers, flow rates, and the liquefaction process.
Safety devices: Essential components such as pressure relief valves and emergency shutdown systems to ensure the generator operates safely.
Nitrogen generator
Pressure swing adsorption (psa): Utilizes a molecular sieve (like zeolite), typically in two adsorption towers, to selectively adsorb oxygen and other gases, allowing high-purity nitrogen to pass through.
Membrane technology
Uses a semi-permeable polymer membrane to separate gases, allowing nitrogen to pass through while holding back other gases.
Condenser
After the nitrogen gas is produced, the cryocooler cools it down to a very low temperature, causing it to condense into a liquid form.
Packing and Shipping of Small Liquid Nitrogen Generator
|
Packing |
Wooden box |
|
Shipping |
Shipped by road, sea, rail |
FAQ
We're professional small liquid nitrogen generator manufacturers in China, engaged in providing high quality equipment and spare parts with PLC control system. Please feel free to buy portable small liquid nitrogen generator at competitive price from our factory. Contact us for customized service.
Small Liquid Nitrogen Dewar with Machine, Small Liquid Nitrogen Machine, Small sized Liquid Nitrogen Freezing Machine









