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WhatsApp / Mob : +86 156 5177 2521
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e-mail : mrwin@cnbangwin.com
WhatsApp / Mob : +86 156 5177 2521
e-mail : mrwin@cnbangwin.com
Small Liquid Nitrogen Plant – Complete Guide for LN2 Production
Nov 27 , 2025A Small Liquid Nitrogen Plant provides an effective and convenient solution to generate LN₂ locally. Compact liquid nitrogen plants are popular in many laboratories, research facilities, food-processing plants and metal industries as they help to save on delivery fees and significantly improve workplace safety.
With increasing demand, manufacturers like Nanjing Bangwin Gas have begun offering modular LN₂ plants with reliable performance and low power usage.Browse our other systems for gas production in Nitrogen Generators and Cryogenic Air Separation Units .
https://bangwingas.com/nitrogen-generator/
A Small Liquid Nitrogen Plant is a small-sized cryogenic system to locally produce ultra-cold liquid nitrogen from atmospheric air.
The unit is ideal for users that need a steady supply of LN₂, but do not want to pay the high costs associated with transporting liquid nitrogen or have to deal with an inconsistent third-party vendor.
Capacity ranges from 5–200 liters per hour depending on the specific model.
Cryogenic Engineering – ScienceDirect
https://www.sciencedirect.com/topics/engineering/cryogenic-engineering
The working principle of the Small Liquid Nitrogen Plant involves several key steps :
l Air Compression: The compressor intakes atmospheric air and raises its pressure.
l Air Purification: Filters are used to remove moisture, CO₂, hydrocarbons, and dust particles from the air.
l Cryogenic Cooling: The filtered air enters a cryogenic cold box, where it is cooled to cryogenic temperatures using an expansion cycle.
l Nitrogen Liquefaction: The system further cools the nitrogen gas below its boiling point (–196°C) and liquefies it to produce liquid nitrogen.
l Storage in Vacuum Tanks: The produced LN₂ is then transferred to insulated storage tanks (commonly known as dewars or liquid tanks) for safe storage and use.
If you are interested in similar equipment you can check out PSA Nitrogen Generators
Key components of a complete Small Liquid Nitrogen Plant setup are:
l Air compressor
l Air purification system
l Plate-fin heat exchanger
l Cryogenic cold box
l J-T valve or expander
l LN₂separator
l Vacuum-insulated storage tank
l Control panel with PLC
If you are looking for other gas equipment you can check it out on our Gas System Components
page.
l Continuous production of LN₂
l Fully automatic operation using PLC
l Compact size and low footprint
l Minimal maintenance requirements
l Quiet operation
l Skid-mounted construction for easy and fast installation
l High reliability for long-term use
l Energy-efficient cooling cycle
l LN₂Purity: 99%–99.999%
l Capacity: 5–200 L/h
l LN₂Temperature: –196°C
l Storage Tank Sizes: 30L–300L dewars
l Power: 8–14 kW based on the model
l Design Concept: Plug-and-play modular unit
l Optional Functions:
l Remote cloud monitoring
l Medical LN₂ purification
l Bigger cryogenic storage tank
1. Savings
Installing a small liquid nitrogen plant can save on the purchase and transportation of LN₂.
2. Stable supply
Buyer-produced on-site, no need to wait for delivery, no fear of lack of supply.
3. Safer
Never have to worry about emptying a big LN₂ tanker.
4. Easy to use
Simple to operate daily, with a user-friendly control panel and easily readable instructions.
5. Compact
Ideal for laboratories, universities, small factories, or facilities with space constraints.
6. Long service life
Nanjing Bangwin Gas only uses long-lasting, high-quality cryogenic components.
The following industries can be widely applied by A Small Liquid Nitrogen Plant:
l Laboratory experiment
l Cryopreservation
l Medical sample storage
l Food freezing and food processing
l Shrink fitting of machinery
l Semiconductor cooling
l Cold trap
l Metal cryogenic treatment
More industrial applications, please click: Solutions for Gas Applications
Nanjing Bangwin Gas is a cryogenic and gas production equipment supplier. The following are the features of our Small Liquid Nitrogen Plants:
l High reliability
l CE/ISO-certified configurations
l Efficient cryogenic cooling system
l Fast installation
l Professional technical support
l Global service
l Customizable LN₂ production capacity
More about the company, please click: About Nanjing Bangwin Gas
Q1: What capacities are available?
Small plants have a capacity of 5–200 L/h generally.
Q2: Can I use dewars to store LN₂?
Yes, all models are compatible with vacuum-insulated dewars.
Q3: How long does it take to install?
Installation of most machines takes 1–3 days.
Q4: Does it need maintenance often?
The system requires only filters and routine checks.
Q5: Why choose Nanjing Bangwin Gas?
We are a reliable, efficient and durable supplier of LN₂ solutions.
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