We manufacture oxygen plants and nitrogen plants as per the latest technology & design of the Company ING. L. & A., BOSCHI, ITALY. This technology has been proven all over the world for its working efficiency & trouble free operation. The AIR SEPARATION COLUMN of BOSCHI has state of the art distillation trays, SPECIAL HIGH EFFICIENCYexchangers condenser to get a high yield of Oxygen by separation of Liquid Air, which results in very low pressure & low power consumption.
1. COMPRESSION OF ATMOSPHERIC AIR BY AIR COMPRESSOR
Air is compressed at a very pressure of 5-7 bar (kg/cm2). Air can be compressed at such low pressure by trouble free rotary compressor (Screw / Centrifugal Type advanced technology is employed in lieu of old bulky piston compressor)
2. PRE COOLING SYSTEM
The second stage of the process uses a low pressure refrigerant for precooling the processed air to temperature around 12 deg C before it enters the purifier.
3. PURIFICATION OF AIR BY PURIFIER
The air enters a purifier consisting of twin Molecular Sieve driers, working alternatively. The Molecular Sieves remove the Carbon dioxide & moisture from the processed air before the air enters Air Separation Unit.
4. COOLING OF AIR BY turbo (EXPANDER)
The air has to be cooled to sub zero temperatures for liquification & the cryogenic refrigeration & the cooling is provided by highly efficient turbo expander, which cools the air to temperature almost below -165 to-170 deg C
5. SEPARATION OF LIQUID AIR INTO OXYGEN AND NITROGEN BY AIR SEPARATION COLUMN
Oil free, moisture free and Carbon Dioxide free air enters into low pressure aluminium brazed fin type HEAT EXCHANGER where the air is cooled below sub zero temperatures by air expansion process in the turbo expander.Air gets liquefied when it enters the air separation column & gets separated into oxygen & nitrogen by the process of rectification. Argon can be recovered successfully in plants above 1000m3/hr as the percentage in air is below 1%.
6. WITHDRAWAL GAS OXYGEN AND STORAGE IN STORAGE TANK
The final product in the form a liquid Oxygen/Nitrogen goes to the storage tank
