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Universal in Collaboration with ING.L.A. BOS CHI Italy SINCE 1930 manufactures & suppliers Premium Quality low pressure Air separation plants of all sizes ranging from 50m3/hour to 50,000m3/hour including Cryogenic Tonnage gas plants and liquid plants.

With state of the art designs and technology from Europe, established manufacturing facilities spread out in various locations all over India & Asia and sales located inNew Corporate Region (NCR) of Delhi, the Italy based company is dedicated to supplying the latest in Cryogenic Technology constantly striving to improve its products through continuous research and development.

Small Capacity Plants

Range40TO1000M3/hr.
Purity oxygen -99.6% .Nitrogen -99.99% or 3PPM
Operating Air Pressure- 0.6 TO 0.7Mpa

Air Compressor	Pre-Cooler+Purification Unit

Air Separation Unit	Turbo Expander	Control Panel

Medium Capacity Liquid Plants(32 TPD TO 320 TPD)

Range 1,000 TO 10,000M3/hr.
Purity oxygen-99.6% .Nitrogen-99.99% or 3PPM
Operating Air Pressure- 0.6 TO 0.7Mpa

Air Compressor	Purification Unit	Air Separation Unit

Turbo Expander	Control Panel

Al AC PC PU P1/2 H

Air Filter Air Compressor Pre-Cooling Unit Purification Unit MTower1/Tower2 Heater

EX TE1/2 E2 C1 CR C2

Main Heat Exchanger Turbo Expander Sub Cooler Column Condensor Reboiler Low Pressure Column

Technical Data

Production	Oxygen	Nitrogen	Argon
Purity	99.6%	99.9%-99.99% or 3ppm	99.5% or5ppm
Air Pressure	0.7Mpa/7Bar
Normal operating pressure of plant	0.6 To 0.7Mpa	0.6 To 0.7Mpa	0.6 To 0.7Mpa
Power Consumption for oxygen	0.5 To 0.8 KWh/m	Nil	Negligible

Basic Principle

The air separation plant is a plant recovering oxygen and nitrogen from air simultaneously. It advance low pressure technology process of Boschi Italy using Rotary screw compressor (or low oil free piston compressor)and turbo expanders. The feed air entering the Molecular Sieve purification system employed to remove the moisture and Co2 from the process air. The air is liquefied by cryogenic cooling using latest plate and fin high efficiency heat exchangers and turbo expanders. The liquid air separates into oxygen nitrogen and inert gases in the air separation column.

Process Description

1. Air Compressor-Low Pressure
Air is compressed at a low pressure of 5-7 bar (0.5-0.7mpa). 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 pre-cooling 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 process air before the air enters Air Separation Unit.

4. Cryogenic 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 If Liquid Air Into Oxygen and Nitrogen by Air Separation Column
Oil free, moisture free and Carbon Dioxide free air enters into low pressure plate fin type Heat exchanger where the air is cooled below sub zero temperatures by air expansion process in the turbo expander. Due to the excellent thermal efficiency we can achieve a temperature difference delta t as low as 2 deg c at the warm end of these exchangers.

Air gets liquefied when it enters the air separation column & gets separated into oxygen & nitrogen by the process of rectification.

Oxygen is available at the outlet of the ASU at a purity of 99.6%.
Nitrogen is also available t the outlet as a second product at purity of 99.99% upto 3ppm simultaneously without loss of oxygen product

6. Compression of Oxygen filling in the Cylinder The final product in the form compressed Oxygen/Nitrogen goes to the high pressure oxygen cylinders at 150 bar or upto higher as required.. Or for pipeline supply or captive consumption | Or for liquid plants to fill in cryogenic liquid tanks.

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