Liquid Nitrogen Plant

Liquid nitrogen plant is an industrial system that taps air from atmosphere which s then compressed in the air compressor.  Afterwards, the air is put into a cleanup system where impurities such as carbon dioxide, hydrocarbons and moisture are removed.  Now, the air is directed into a heat exchanger where it gets cooled to cryogenic temperatures. The last but not the least, the moves into a high pressure distillation column where nitrogen is separated from oxygen and other gases and is distilled till it meets the specifications for industrial and medical applications. We manufacture our liquid nitrogen plants as per internationally approved standards. Designing of our plant machinery is done meticulously as per the designing principles.  The latest cryogenic technology is used in the fabricating of the machinery not to talk of the premium quality material and components used.

Nitrogen gas is known for its non-reactive properties and is used wide range of industries. For the requirement for high purity nitrogen the industries install onsite liquid nitrogen plants for generation of liquid nitrogen (LIN). It is said that around 50 million tons of nitrogen gas is generated every year. Liquid nitrogen plants are preferred by our customers all over the globe since liquid oxygen is easy to transport and store. Moreover, storage of liquid nitrogen is cheap as well besides there is less chance of leakage, another economic benefit you should not ignore.

Applications of Nitrogen

Nitrogen is very important gas for various industries including chemical where it is used for making fertilizers, nitric acid, nylon, dyes, and explosives. Being known for its inerting properties, nitrogen is ideal for preservation of food and making of diodes and transistors. The non-reactive gas is used on a large scale in annealing stainless steel and various other products used in the generation of steel. Annealing is a heat treatment that making it easier to work on steel.  . It is used for freezing foods and helping them to maintain texture, flavor, color and moisture. Numerous other applications include:

  • Storage of sperm, eggs and other cellular materials
  • Beverage industry (coca cola ,juice bottling )
  • Glass industry
  • Freezing seafood
  • Nitrogen refinery
  • Tunnel freezing

Salient Features of Liquid Nitrogen Plant

  • Easy installation and commissioning
  • Low power consumption due to Low pressure (5 to 7 Bar) process
  • Low maintenance due to no reciprocating parts
  • Fully automatic air cooled design Rotary Air Compressor
  • Nitrogen output at high purity up to 5 PPM
  • CE certified product with design as per European Gas Association guidelines for ASP’s.
  • Cryogenic expansion of air for cooling via Expansion Turbines
  • No special civil foundation required for any part of the plant
  • Hydrocarbon vapor level reduced below 0.003 PPM to ensure safe operation

Scope & Supply of Nitrogen Gas Plant

  • Air Compressor : Rotary air compressor screw type can be used for smaller size plants upto 50 m3/hr & 1000 m3/hr. Upto 40000m3/hr. Centrifugal compressor can be used for higher size plants.
  • Air pre cooling system: Air separation plants adopt chilling system in all air pre-Cooling systems.
  • Air purification system: Molecular sieves are used in the air purification system to remove the Co2 & moisture for the process air at low- Pressure.
  • Air separation column: (Air separation column-cold box) consists of outer steel casing, Main heat exchanger, liquefier, Bottom column, Top column, Condenser, Sub-cooler, Liquid oxygen & nitrogen filter. Cooling pipe line, insulation material, Digital electronic temperature indicator & scanner, PT 100 sensor, DP gauge monometer, Expansion valve with long stem type with pointer & index & wheel -1 set.
  • Expander: Expander is used for giving cooling to the air for the liquefaction process and broken by booster, so as to reduce the expanded air volume, stabilize the upper columns working condition and reduce power consumption. The turbine expanders have complete trouble free working and long life and reliability.
  • Control Panel:  Nitrogen gas plants can be configured for automatic operation through a pc. This will use out switching valves of German or Japanese and motorized cryogenic valves on cold box.
Technical Specification

 

MODEL CAPACITY IN M3/HOUR NUMBER OF CYLINDERS PER DAY Purity of oxygen produced Pressure of oxygen in cylinders
OXYGEN NITROGEN PLANTS UB-25 25 100 99.7% 150-200 BAR
UB-50 50 200 99.7% 150-200 BAR
UB-80 80 300 99.7% 150-200 BAR
UB-100 100 400 99.7% 150-200 BAR
UB-150 150 600 99.7% 150-200 BAR
UB-200 200 800 99.7% 150-200 BAR
UB-300 300 1200 99.7% 150-200 BAR
UB-400 400 1600 99.7% 150-200 BAR
UB-500 500 2000 99.7% 150-200 BAR
UB-1000 1000 4000 99.7% 150-200 BAR