Capacities: Plants are available from 50m3/hr upto 50,000m3/hr Oxygen or
Cylinder filling: oxygen-nitrogen gas can be filled in the cylinders as per
the cylinder filling chart given below
Purity: Oxygen gas of 99.7% purity can be produced and *pure nitrogen of 99.9% upto 3ppm is produced.
without any los of the oxygen production.
**voltage and freqwuency as per the country of installation.
Main Performance of the plant:
Oxygen purity 99.7% at 150-160 Bar(2200PSIG) for Oxygen cylinder filling
High purity Nitrogen 99.99%(ppm optional) or cylinder filling.
There is no loss of oxygen Production when producing high purity nitrogen.
Air separation is CRYOGENIC TYPE with low-pressure cycle of 7
Kg/cm2 with air separation by liquification. This cycle utilize an Expansion TURBINE to give the cold calories at (-)1 80° C. The cold box is supplied as a complete package unit with control panel and insulation.
This air separation plant mainly includes:
• air filter system
• air compressor system
• air pre cooling system
• Molecular sieve purifying system
• rectifying column system, nitrogen & oxygen compress and storage system, instrument control system, electric control system. Etc.
Air filter and compression
Air enters the self cleaning air suction filter, after being removed of dust and other mechanical contaminants in it, then enters main air compressor, after compression air then enters the after cooler.
Air cooling and purifying
Air is cooled in the Pre-Cooling System before enters mole sieve adsorber, Air which enters the evaporator of the Pre-Cooling System is cooled by the refrigerant.
Mole sieve purifying system includes two mole sieve adsorber and Steam heater or Electric heater. The mole sieve adsorber adsorbs water, CO2 and some hydrocarbon in the air, one mole sieve adsorber is regeneration while another one is work.
Air from adsorber is divided two stream: one stream enter directly main heat exchange, then enter lower column after cooled, the second stream enter main heat exchanger to cool after compressed by booster end of the expander and cooled by after cooler, then enter upper column after expanded by the expander.
The content of nitrogen will increase through rising gas connect with the reflux. Needed reflux liquid nitrogen is from condensate evaporator in the top of lower column, oxygen will be evaporated and nitrogen will be condensed in here.
• Lower column production as following from the top down:
• Pure liquid nitrogen
• Poor oxygen liquid air with 20%O2
• Rich oxygen liquid air with 36.5%O2
All production in the lower column after sub cooler enter upper column as its reflux.Production of upper column as following from the top down:
• Waster nitrogen at the top.
• Liquid oxygen at the bottom
Direction which all production of upper column go Waster nitrogen is reheated to design temperature out of the cold box by main heat exchanger and sub cooler after drawn from the top of upper column, one steam is regenerated by molecular sieve absorber, the other is taken in water cool column to cool water.
• It is compressed to 150 BAR for filling oxygen cylinders by a oxygen booster in the cylinder filling manifold
Scope Of Supply:
Air Compressors of Atlas Copco
The oxygen plant UBT SERIES consist of the following equipments
The air compressor compresses the atmospheric air through a highly efficient suction filter to a pressure of 30- 40 bar which provides the main raw material for the production of oxygen and nitrogen
Air purification unit
Complete View of Oxygen Plant Installation
- Air Refrigerant compressor including special motor
- - One condenser
- - One evaporator / water cooler
- - One set of Piping and valves
- - Instrumentation
- - Water Separato
Molecular Sieve Battery on skid :
Complete with 2 nos. vessels, Reactivation heater complete with Molecular Sieve designed for process skid mounting.
Defrost Heater :
Consist of heating coils and heating element 5 kW.
Gas/Air Lines as per standard Layout :
All pipelines for process air, Nitrogen and Oxygen line, HP line upto manifold along with short bend, elbow, socket and other necessary fitting as per our standard layout drawing.
Air Sepration Column (Cold Box)
(Leak proof Cryogenic grade Stainless Column)
Boschi Italy design patent, CE quality and design specifications.
Cryogenic type completed with support and connected pipes and internal
The turbo expander is a rotary machine running on gas bearing. This is used to provide cooling for the liquefication of air at minus 180 to (-)190degrees centigrade.
- Expansion turbine body
- Ventricular joint
- Inlet filter
- Bearing & sealed gas system
- - Instrument gas filter
- - ET bearing and sealed gas system
Oxygen Cylinder Filling System
The oxygen is filled into cylinders by an oxygen filling SYSTEM ( PUMP/BOOSTER) .
Cylinder Filling Maniflod
Cylinder Filling Station for Filling Cylinders
Complete with control valves pressure gauge safety valve & pigtail connections points each.
Distribution Electric Control Panel
Electrical Panel for supply of electricity to individual motors. With overall suitable size it has a bank of on/off switches MCB/MCCB of high quality Siemens/L&T Make and neatly labeled with separate connections for each individual equipments of the oxygen plant. This enables the Operator to control all the Motors from one point.
|OXYGEN (NM3/HR) CYLINDERS PER DAY
|OXYGEN CYLNDER PRESSURE 150BAR TO 200BAR