Machine Overview
The liquid nitrogen generator is a device that uses low-temperature distillation technology to cool and liquefy compressed air, and then uses the different boiling points of oxygen and nitrogen to distill nitrogen. This equipment can also produce liquid oxygen and liquid argon simultaneously when producing liquid nitrogen. This production mode can greatly improve the economic efficiency of the factory.
This cryogenic air separation nitrogen generator can easily produce high-purity liquid nitrogen, usually up to 99.999% purity, with almost no impurities in the liquid nitrogen. This liquid nitrogen can meet the application needs of all industrial fields, such as aerospace, photovoltaics, medical, chip manufacturing and other high-precision industries.
This liquid nitrogen machine can produce continuously for 7*24 hours, making it very suitable for large industrial projects and customers with high-purity nitrogen requirements.
Advantages of liquid nitrogen generator
- High purity liquid nitrogen quality
This machine can produce liquid nitrogen stably for a long time, with a highest purity of 99.999% (5N grade).
- The device has mature technology
Low temperature distillation technology has a development history of over 100 years, and this process is very mature. The equipment can operate smoothly for a long time, and the service life of distillation towers and heat exchangers can reach 20-30 years.
- Intelligent control
This device is compos of multiple independent machines, which are centrally control by a central processing unit to achieve precise control of the operating parameters of each machine.
- Large scale diversified production
This equipment is specifically design for large-scale production. When the equipment enters a stable operating state, it can simultaneously produce high-purity liquid nitrogen, liquid oxygen, liquid argon, etc.
Technical parameters of liquid nitrogen generator
- Product: Liquid Nitrogen
- Production capacity: 50L/h
- Purity: 99.999%
- Pressure: 0.8mpa
- Start time: 24Hs
- Starting pressure: 0.7mpa
- Power supply: 380V/50Hz
The manufacturing process of liquid nitrogen
- Air compression and purification
The air compressor reduces the air pressure to 0.7 MPa, and then undergoes freeze-drying to separate moisture and oil from the air. The filter removes dust and mechanical impurities from the air.
- Temperature cleaning
Cold air enters the canister of the molecular sieve, and the temperature cleanses impurities such as carbon dioxide and hydrocarbons. Usually, two molecular sieve canisters work together, one canister is useing to adsorb impurities, and the other canister is useing for heating and regeneration.
- Air cooling
When pure air enters the cold box, a small portion of the gas enters the turboexpander to provide refrigeration, while the remaining air enters the cold box and is cooling to -180℃, completely turning the air into liquid.
- Gas separation
Liquid air undergoes preliminary separation in the lower tower, with nitrogen rising and oxygen sinking. The top is high-purity nitrogen and the bottom is high-purity oxygen.
- Distillation liquefaction
The nitrogen at the top condenses into liquid, and high-purity liquid nitrogen is collection at the top of the tower. The oxygen at the bottom condenses into liquid oxygen, and high-purity liquid oxygen is collection at the bottom of the tower.
Liquid nitrogen generator china factory video
Equipment List for Liquid Nitrogen Machines
- air compressor
- Air purification machine
- Refrigeration Compressor
- Molecular sieve adsorption equipment
- Heater
- Filter
- condenser
- Evaporator
- distillation column
- Cold box
- Turbine expansion machine
- Valves and tube
- Refrigeration control system
- Integrated Control System
- Automatic drainage system
Requirements of liquid nitrogen generator for factories
The building of the factory must have a grounding wire, and lightning rods need to be installed outdoors to prevent damage to the building caused by lightning weather.
The foundation of the fractionation tower needs to be independently reinforced to meet seismic requirements, with a horizontal ground level and reserved foundation screws and drainage pipes.
The high-voltage power supply indoors must be a closed room, kept ventilated and dry, to prevent workers from entering the room at will.
The central control room is a key location for monitoring the operation of liquid nitrogen generator machines, and it is necessary to maintain a good and suitable temperature indoors. If necessary, air conditioning should be installe in this room.
Install fire-fighting equipment in accordance with local laws and regulations, such as fire hydrants, fire extinguishers, etc.
The laying of high-voltage cables must be kept away from high temperature, vibration areas, water accumulation areas, etc. The location of the cables should be properly mark
The lighting in the factory area needs to be laid according to the layout of the liquid nitrogen machine to avoid the problem of insufficient lighting in key positions.
Installation and debugging
This cryogenic liquid nitrogen generator consists of many independent devices. Installing this production line requires equipment such as cranes, forklifts, etc. The buyer needs to provide these devices and provide necessary assistance.
Installing this production line requires 2-3 Chinese engineers, and the buyer needs to provide all the expenses for each Chinese engineer, including airfare, hotel, visa, food, etc.
Chinese engineers can only speak Chinese and some simple English. If necessary, a language translator is needed to better complete this installation work.
When the machine installation is completion, there will be an engineer staying at your factory to train your engineers, operate the equipment, troubleshoot, and maintain the equipment.
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