Company profile
About LDH GAS Company: Professional Nitrogen Generation Equipment Service Provider
Lidaheng is a leading domestic enterprise in the research and manufacturing of gas separation equipment. It has been deeply engaged in membrane separation technology for over a decade, always focusing on "innovation in technology and reliable quality" as its core. It provides customized nitrogen generation solutions for multiple industries such as medicine, food, electronics, and chemicals. The company has a team of senior engineers, equipped with modern production bases and strict quality control systems. Its products have passed ISO9001 quality management system certification and are exported both domestically and internationally. They have served over 2,000 enterprises and have become a trusted brand of nitrogen generation equipment for customers due to their stable performance and considerate service.
Liquid Nitrogen Generator
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Liquid Nitrogen Generator
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Liquid Nitrogen Generator
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Liquid Nitrogen Generator
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"one-stop after-sales guarantee" to customers, eliminating your worries
Free installation and commissioning
After the equipment arrives, professional engineers will come to install and commission it, guiding the operators on how to use it, ensuring the equipment can be put into production quickly;
Warranty service
The entire machine is guaranteed for 2 years, and the core membrane components are guaranteed for 3 years. In case of quality issues during the warranty period, free repair or replacement of parts will be provided;
Regular maintenance and servicing
1-2 free on-site maintenance services per year (cleaning, filter element replacement, performance calibration, etc.) are provided annually to extend the equipment's lifespan;
Emergency response service
A 24-hour after-sales hotline is established. Upon receiving a fault feedback, a solution will be provided within 1 hour, and on-site maintenance will be carried out within 48 hours (72 hours for remote areas);
| Mode | LPLN-10 | LPLN-20 | LPLN-40 | LPLN-80 | LPLN-120 | LPLN-240 | LPLN-480 | LPLN-720 | LPLN-960 | LPLN-1200 |
| Capacity | 0.3-0.4L/H | 0.8-1L/H | 1.6-2L/H | 3L/H | 5L/H | 10L/H | 20L/H | 30L/H | 40L/H | 50L/H |
| 8-10L/day | 20-24L/day | 40-50L/day | 72L/day | 120L/day | 240L/day | 480L/day | 720L/day | 960L/day | 1200L/day | |
| Purity | ≥99% | ≥99% | ||||||||
| Votage | 220VAC | 380VAC 3P 50Hz | 380VAC 3P 50Hz | |||||||
| 1P | 220VAC 1P 50Hz | 220VAC 1P 50Hz | ||||||||
| 50Hz | ||||||||||
| Power(KW) | 2 | 4.5 | 7.5 | 12.5 | 15 | 27 | 45 | 55 | 84 | 92 |
| Area | 1 | 1.5 | 3 | 3.5 | 3.5 | 10 | 30 | 30 | 40 | 40 |
| Size | 750*650*1500 | 1150*850*2000 | 1250*2000*2000 | 1250*2000*2000 | 1250*2000*2000 | 6000*1100*2200 | 8000*1700*2300 | 8000*1700*2300 | 12000*1800*2350 | 12000*1800*2350 |
| Ambient temperature | 0-30ºC | 0-30ºC | ||||||||
| Noise(dB) | <50Db | <50Db | <50Db | <50Db | <55Db | <72Db | <78Db | <78Db | <78Db | <78Db |
Why Choose Us?
High efficiency and energy saving, lower cost
Controllable purity, wide applicability
Intelligent operation and maintenance, simple to operate
Equipped with a PLC intelligent control system
Product Core: Working Principle of Membrane Liquid Nitrogen Generator
The LDH GAS membrane liquid nitrogen generator is based on advanced membrane separation technology. It uses compressed air as the raw material and achieves efficient nitrogen production through the following three steps:
Air Pre-treatment: The raw air is purified by a precision filter to remove oil, water, dust, etc., ensuring the cleanliness of the air entering the membrane module, which prolongs the lifespan of the membrane;
Membrane Separation: The pre-treated compressed air enters the dedicated hollow fiber membrane module. The membrane has high permeability to gases such as oxygen and carbon dioxide, while nitrogen has low permeability. Under the pressure difference, oxygen and other impurity gases quickly pass through the membrane wall and are discharged, while nitrogen is enriched at the outlet of the membrane module;
Low Temperature Liquidation: The enriched high-purity nitrogen (with a purity of up to 99.9%-99.999%) enters the low-temperature cooling system. Through precise temperature control, the nitrogen is liquefied, and finally, liquid nitrogen is generated and stored in a dedicated storage tank to meet immediate or continuous nitrogen demand.
Everything You Need to Know
Questions and Answers about Nitrogen Generator
What is a liquid nitrogen machine?
A liquid nitrogen machine is a device that uses cryogenic technology to separate liquid nitrogen from the air and can produce liquid nitrogen on-site.
What are the advantages of a liquid nitrogen machine?
Compared to purchasing bottled liquid nitrogen, a liquid nitrogen machine can provide a continuous supply and does not require frequent replacement of cylinders, making it more economical in the long run.
Is a liquid nitrogen machine safe?
Safe, but be aware of the following: prevention of frostbite (-196℃), prevention of leakage (to avoid oxygen deficiency), regular maintenance.
What parameters should be considered when choosing a liquid nitrogen machine?
The main parameters to look at are: liquid nitrogen production, purity (such as 99.999%), energy consumption, and floor space.
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