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 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 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 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.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 99.9% upto 3ppm simultaneously without loss of oxygen product.

6. COMPRESSION OF OXYGEN AND FILLING OF OXYGEN IN CYLINDERS
The final product in the form compressed Oxygen/Nitrogen goes to the high pressure oxygen cylinders at 150 bar or upto higher as required.

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(I) Air Compressor: Screw/low pressure- type : (or oil free piston or centrifugal types)
We employ the most advanced compressor series available in the market. They have a unique combination, meeting customer requirements for low installation, operating and maintenance costs with high dependability and ease of use.
Screw typ rotary compressors are one of the most advanced and trouble free.

Centrifugal Type: No other turbo type oil free compressor can match its efficiency and economy. This ensures a consistent and highly reliable source of air supply. Maintenance is extremely low.

The final product in the form compressed Oxygen/Nitrogen goes to the high pressure oxygen cylinders at 150 bar or upto higher as required.

(II) Pre – Cooling system:
The pre-cooling system is a highly efficient skid mounted equipment provided with the main purpose of cooling down the air to a temperature of 5 to 8 degrees Celsius and thus to discharge the condensed water. We are using highly reliable compressors of European origin.

(III) Purifier:
The purifying system is the secondary process unit which is responsible for the removal of moisture, carbon dioxide, hydrocarbons as well as rare gases that are considered to be impurities in the process cycle of air separation. The structure essentially consists of double layered molecular sieves from “Zeochem” (Switzerland) along with alumina which acts as an adsorbent.

The process purifier is vital to the entire process and is greatly responsible for the purity of the final product i.e. Oxygen and Nitrogen in the Air separation Column. It consists of 2 skid mounted molecular sieve regeneration batteries that work on shifts and switch alternatively either manually or through a PLC control (optional).

(IV) Air separation Unit:
The Key to the entire Air separation Process lies within the Air Separation Unit (A.S.U). Here, the mixture of Oxygen and Nitrogen is separated by virtue of the difference in their liquefication temperatures.

The design and efficiency of the A.S.U determines the quality of the final product i.e. Oxygen and Nitrogen in terms of quantity and quality. The Boschi design A.S.U features highly efficient fin type aluminium heat exchangers and column, wherein the entire upper column is a packed column thus reducing the operational pressure and increasing the Oxygen, Nitrogen and Argon recovery.

Argon is recovered by a revolutionary technique employing full rectification without using the Hydrogen and De-Oxo unit thus saving further on power costs, operational costs and investment. This makes the Boschi design machines highly versatile and economical thanks to all the research and development done over the years.

(V) Turbo expander:
The Turbo expander is a gas or oil bearing expansion refrigeration turbine that is much more efficient than any other expansion device.

It works on the technique of induced cooling via expansion due to which the operational pressure of the plant is further reduced and the performance of the distillation column is stabilized for constant production and high purity.

Universal turbo expanders test bed for 100% reliability and tested at 150,000 rpm at minus 190 degree centigrade. troublefree service for years.

Universal Boschi (Italy) is a reputed manufacturer/exporter and supplier of Liquid Oxygen Plants, Liquid Oxygen Nitrogen Plants(Low Pressure) and Liquid Filling Oxygen Nitrogen Plants starting from 40 cum/hr and following are the specifications for the same :

Models	UBTL SERIES UBT40, UBT80, 100, 120, 150 , 180, 200, 220, 250, 300, 350, 400, 500, 600, 800 & 1000. 2000, 3000, upto 40.000
Oxygen production	Liquid Oxygen (LOX) 40 to 40,000m3/hr
Oxygen Output (cu. Mtr/hr)	40 TO 50,000m3/hour Liquid
Oxygen Purity (%)	99.6% (03 Bar)
Liquid Oxygen Pressure in cylinders	0.03 MPA (0.3Bar)
Nitrogen production	Liquid Nitrogen (LIN) - 40 to 40,000m3/hr
Nitrogen Pressure out of Column (bar)
Nitrogen Output (cu. Mtr/hr)	99.9% to 99.99/3ppm opt.
Nitrogen Purity (ppm optional)	150 bar(kg/cm2)
Nitrogen filling in cylinders(optional)	150 bar(kg/cm2)
Argon Production	Argon recovery unit can be filled for argon production above 1000,3/hr
Type
Operation Pressure (bar)	7 bar(kg/cm2)
Operation Period	24 hours -continuous
Air compressor	Rotary/screw
Expander	turbo
Downtime for repair	Very low due to screw compressor and low working pressure there are no leakages.
Air separation unit	High yield >99%
Exchanger efficiency(plate fin type)	Very high
Oxygen & nitrogen production	Simultaneous (no loss of oxygen)
Power
Connected	AS PER CAPACITY
Consumed( abt.)	AS PER MODEL
Specific power per m3 of oxygen	UPTO 0.6 UNITS DEPENDING ON CAPACITY
Specific power per m3 of oxygen +nitrogen(pure)	0.2 to0.4kwh(units)
Voltage 3 phase**	380-415 50/60 hz or as per country

• Range 20 TO 1000M3/Hr.
• Purity oxygen -99.6% .Nitrogen -99.99% or 3PPM
• Operating Air Pressure- 0.6 TO 0.7Mpa

Special Features:

A few of the latest technological features incorporated into the Oxygen & Nitrogen plants are listed below.

• All plants use “Oil free” rotary screw /centrifugal oil compressor working between 0.6 to 1.0 mpa.
• All plants incorporate Aluminum Brazed exchangers and packed columns for high efficiency.
• Turbo expanders (Oil or Air Bearing) for trouble free operation.
• All plants above “500” are supplied with automatic PLC control.
• Engineering support along with complete quality control is provided by our company.
• We provide qualified engineers for Supervision, Installation and start up of all our plants as well as training of manpower at customers’ site.
• Very low power consumption with proven performance and virtually Zero maintenance required for the machines.
• 100% reliability for oxygen gas quality for industrial & hospital use.

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 expander.

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.

Model (O2/N2*/Ar)	LOX Capacity Nm3/h	LOX Capacity L/Hr	GO2 Purity % O2	GN2 Capaity Nm3/h	LIN Capacity Nm3/h
UBTL-20/20	20	24	99.60%	20	20
UBTL-30/30	30	36	99.60%	30	30
UBTL-40/50	40	48	99.60%	50	40
UBTL-60/80	60	72	99.60%	80	60
UBTL-80/100	80	96	99.60%	100	80
UBTL-100/150	100	120	99.60%	150	100
UBTL-120/150	120	144	99.60%	150	120
UBTL-150/200	150	180	99.60%	200	150
UBTL-170/200	170	204	99.60%	200	170
UBTL-200/220	200	240	99.60%	220	200

Model (O2/N2*/Ar)	LOX Capacity Nm3/h	LOX Capacity L/Hr	GO2 Purity % O2	GN2 Capaity Nm3/h	LIN Capacity Nm3/h
UBTL-220/220	220	264	99.60%	220	220
UBTL-250/250	250	300	99.60%	250	250
UBTL-300/300	300	360	99.60%	300	300
UBTL-LOX/350LIN/350 GAN	350	420	99.60%	-	350
UBTL-350/350	350	420	99.60%	350	350
UBTL-400/400	400	480	99.60%	400	400
UBTL-500/500	500	600	99.60%	500	500
UBTL-600/600	600	720	99.60%	600	600
UBTL-800/800	800	960	99.60%	800	800

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

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 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.

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 1 50 bar or upto higher as required.. Or for pipeline supply or captive consumption | Or for liquid plants to fill in cryogenic liquid tanks.

Universal Boschi (Italy) is a reputed manufacturer/exporter and supplier of Medium capacity Liquid Oxygen Nitrogen Plants(Low Pressure)in the range of 1000 cum/hr - 10,000 cum/hr and following are the specifications for the same :

Model (O2/N2*/Ar)	LOX Capacity Nm3/h	LOX Capacity L/Hr	GO2 Purity % O2	GN2 Capaity Nm3/h	LIN Capacity Nm3/h
UBTL-1000(LOX/LIN)1000	1000	1200	99.60%	-	1000
UBTL-1000(LOX)/1000(LIN)	1000	1200	99.60%	-	1000
LOX/4450 GOX/100LIN/100GAN/LAR70	450	540	99.60%	1000	100
UBTL-1000/800	1000	1200	99.60%	800	1320
UBTL-1500/1500	1500	1800	99.60%	1500	1980
UBTL-2000/2000	2000	2400	99.60%	2000	2640
UBTL Ar-1500/1500/45	1500	1800	99.60%	1500	1980
UBTL Ar-3600/3600/100	3600	4320	99.60%	3600	4752
UBTL Ar-6000/13000/200	6000	7200	99.60%	13000	7920

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

Main Components

1.Air Compressor:
Rotary air compressors screw type can be used for smaller size plants upto 500m3/hr & 1000m3/hr. Centrifugal compressor can be used for higher size plants.

2. Air pre cooling system:
Air seperation plants adopts chilling system in all air pre-cooling systems.

3. Air purification system:
This system beds of molecular sieve are used in the air purification system, it remove the Co2 & moisture for the process air at low-pressure.

4. Rectification Column:
The unit in cold box are all low pressure technology. This unit employs the latest state of the art plate and fin exchanger, condenser and sub-coolers. The column is supplied as a packed unit complete with all the control systems including digital flow-meters, temperature, pressure available with high purity upto 2-3 ppm nitrogen as a second product without loss in oxygen production.

5. Turbo-expander:
Turbo-expander is used for giving cooling to the air for the liquification process and braked by booster, so as to reduce the expanded air column,stabilize the upper columns working condition and reduce power consumption. The turbine expanders have complete trouble free working and long life and reliability.

6. Computer Control:
All the plants can be configured for automatic operation through a pc this will use a out switching valves of German or Japanese and motorized cryogenic valves on cold box.

Universal Boschi (Italy) is a reputed manufacturer/exporter and supplier of Large capacity Liquid Oxygen Nitrogen Plants(Low Pressure)in the range of 10,000 cum/hr - 50,000 cum/hr and following are the specifications for the same :

Model (O2/N2*/Ar)	LOX Capacity Nm3/h	LOX Capacity L/Hr	GO2 Purity % O2	GN2 Capaity Nm3/h	LIN Capacity Nm3/h
UBTL Ar-10000/18000/380	10000	12000	99.60%	18000	13200
UBTL Ar-15000/13000/450	15000	18000	99.60%	18000	15000
UBTL-15000/10000	15000	18000	99.60%	10000	19800
UBTL-18000/15000	18000	21600	99.60%	15000	23760
UBTL-20000/20000	20000	30000	99.60%	20000	33000
UBTL-25000/25000	25000	36000	99.60%	20000	39600
UBTL-30000/25000	30000	36000	99.60%	25000	39600
UBTL-40000/30000	40000	48000	99.60%	30000	52800
UBTL-50000	50000	60000	99.60%	50000	50000

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.

Main Components

1.Air Compressor:
Rotary air compressors screw type can be used for smaller size plants upto 500m3/hr & 1000m3/hr. Centrifugal compressor can be used for higher size plants.

2. Air pre-cooling system:
Air separation plants adopts chilling system in all air pre-cooling systems.

3. Air purification system:
This system beds of molecular sieve are used in the air purification system, it remove the Co2 & moisture for the process air at low-pressure

4. Rectification Column:
The unit in cold box are all low pressure technology. This unit employs the latest state of the art plate and fin exchanger, condenser and sub-colers. The column is supplied as a packed unit complete with all the control systems including digital flow-meters, temperature, pressure available with high purity upto 2-3 ppm nitrogen as a second product without loss in oxygen production.

5. Turbo-expander:
Turbo-expander is used for giving cooling to the air for the liquification process and braked by booster, so as to reduce the expanded air colume,stabilize the upper columns working condition and reduce power consumption. The turbine expanders have complete trouble free working and long life and reliability.

6. Computer Control:
All the plants can be configured for automatic operation through a pc this will use a out switching valves of German or Japanese and motorized cryogenic valves on cold box.

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.

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

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 1 50 bar or upto higher as required.. Or for pipeline supply or captive consumption | Or for liquid plants to fill in cryogenic liquid tanks.

Universal Boschi (Italy) is a reputed manufacturer/exporter and supplier of Liquid Nitrogen Plants(Low Pressure) in the range of 20 cum/hr - 15,000 cum/hr and following are the specifications for the same :

Model (LIN/N2*Ar)	LIN Capacity Nm3/h	LIN Capacity L/Hr	GN2 Capacity Nm3/h	N2 Purity
UBTLN-20/20	20	24	20	99.9%-99.9% 3PPM
UBTLN-30/30	30	36	30	99.9%-99.9% 3PPM
UBTLN-40/50	40	48	50	99.9%-99.9% 3PPM
UBTLN-60/80	60	72	80	99.9%-99.9% 3PPM
UBTLN-80/100	80	96	100	99.9%-99.9% 3PPM
UBTLN-100/150	100	120	150	99.9%-99.9% 3PPM
UBTLN-120/150	120	144	150	99.9%-99.9% 3PPM
UBTLN-150/150	150	180	200	99.9%-99.9% 3PPM
UBTLN-170/200	170	204	200	99.9%-99.9% 3PPM
UBTLN-200/220	200	240	220	99.9%-99.9% 3PPM
UBTLN-220/20	220	264	220	99.9%-99.9% 3PPM
UBTLN-250/250	250	300	250	99.9%-99.9% 3PPM
UBTLN-300/300	300	360	300	99.9%-99.9% 3PPM
UBTLN-350/350	350	420	350	99.9%-99.9% 3PPM
UBTLN-400/400	400	480	400	99.9%-99.9% 3PPM
UBTLN-500/500	500	600	500	99.9%-99.9% 3PPM
UBTLN-600/600	600	720	600	99.9%-99.9% 3PPM
UBTLN-800/800	800	960	800	99.9%-99.9% 3PPM
UBTLN-1000/800	100	1200	800	99.9%-99.9% 3PPM
UBTLN-1500/1500	1500	1800	1500	99.9%-99.9% 3PPM
UBTLN-2000/2000	2000	2400	2000	99.9%-99.9% 3PPM
UBTLN-1500/1500/45	1500	1800	1500	99.9%-99.9% 3PPM
UBTLN-3600/3600/100	3600	4320	3600	99.9%-99.9% 3PPM
UBTLN-6000/13000/200	6000	7200	13000	99.9%-99.9% 3PPM
UBTLN-10000/18000/380	100000	12000	18000	99.9%-99.9% 3PPM
UBTLN-15000/13000/450	15000	18000	13000	99.9%-99.9% 3PPM