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Universal in Collaboration with ING.L.A. BOSCHI 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.

Large Capacity Liquid Plants (320 TPD TO 1600 TPD)

Range 10,000 TO 50,000M3/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	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

Small Capacity Plants

Range 20TO1000M3/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

Al	Air Filter	EX	Main Heat Exchanger
AC	Air Compressor	TE1/2	Turbo Expander
PC	Pre-Cooling Unit	E2	Sub Cooler
PU	Purification Unit	C1	Column
P1/2	Tower1/Tower2	CR	Condensor Reboiler
H	Heater	C2	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

Al	Air Filter	EX	Main Heat Exchanger
AC	Air Compressor	TE1/2	Turbo Expander
PC	Pre-Cooling Unit	E2	Sub Cooler
PU	Purification Unit	C1	Column
P1/2	Tower1/Tower2	CR	Condensor Reboiler
H	Heater	C2	Low Pressure 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-coolingthe 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 degC.

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 temp, 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.

Liquid Oxygen is available at the outlet of the ASU at a purity of 99.6%.
Liquid Nitrogen is also available at the outlet as a alternate product at purity of 99.99%(upto 3ppm as required).Nitrogen gas will be available as a by product.

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.

Al AC PC PU P1/2 H TE EX E2 C1

Air Filter Air Compressor Pre-Cooling Unit Purification Unit Molecular Sieve Adsorber Electric Heater Turbo Expander Main Heat Exchanger Sub Cooler Column

K1 C2 C3/4 C5 AP K2 K3 K4 K5

Condesorreboiler Low Pressure Column Argon Column Pure Argon Column Liquid Argong Pump Crude Argon Condenses Crude Argon Liquefier Pure Argon Condenser Pure Argon Reboiler

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