Air separation Plant

Manufacturing of Air Separation Plants

We are the one of the foremost air separation plant designing, manufacturing and engineering companies. The plants are fabricated wide range of capacities and sizes beginning from 25m3/hr to 5000m3/hr. Tonnage air separation plants are also made at our state-of-the-art factory located in Delhi NCR region. Fabrication of air separation machinery is completed with high quality materials and components for delivering smooth, reliable and durable performance. High quality materials are used in manufacturing that can withstand extreme temperature & pressure. We only use ASME certified materials for making long-lasting plant machinery.

Production Range

Cryogenic air separation plants specially designed for a vast range of capacities and products summarized below: Manufacturing Of Air Separation Plants
Salient Features
  • Low pressure technology
  • Precision designing
  • High grade stainless steel column
  • Low operational cost
  • Low maintenance cost
  • Argon welding

We fabricate air separation plants with quality components from OEMs. For example, our air compressors are always bought from Atlas Copco, the most reputed company in the sector. Similarly, all other components employed in the manufacturing are bought only from the leading OEMs. And, the air separation column is made with highest precision and expertise at our factory. The column is the most important part contributes around 60% of the costing of air separation plants. Our world-class expertise along with high grade stainless steel aids us in creating the best quality durable columns.

air separation plants

Process Description

STEP 1 - Air Compression

We use the best quality air compressors which compress at a low pressure of 5-7 bars for gas plants. For liquid plants the pressure used can be up to 10 bars. Trouble free rotary compressor (Screw / Centrifugal Type) can be employed for compressing air.

STEP 2 - Air Pre-Cooling

During the pre-cooling process, we use a low pressure refrigerant for cooling the processed air to a temperature of 12 degree Celsius.

STEP 3 - Purification of Air by Purifier

After being cooled the air moves into a purifier which is made up of twin molecular sieve driers, which work alternatively. Before entering into an air separation unit, the processes air is purified from impurities such as carbon dioxide and moisture.

STEP 4 - Separation of Liquid Air into Oxygen and Nitrogen in Air Separation Column

Purified air enters a low pressure plate fin type heat exchanger for cooling it to cryogenic temperature with air expansion process using a turbo expander. Maintaining sub-zero temperature is essential for achieving liquefaction. Cryogenic refrigeration and cooling is provided by the turbo expander.

Air is liquefied on entering air separation column. Subsequently, it is separated into oxygen and nitrogen though the process of rectification. Oxygen can be generated as a gas or a liquid at the outlet of ASU with purity of 99.7% as per the requirements of customers. Nitrogen is also generated in this process as a 2nd product with purity up to 99.9%.

STEP 5 – Product storage

Oxygen/nitrogen in the gaseous form is directed to the high pressure oxygen/nitrogen cylinders at a pressure of 150 bars or higher as per the requirements. It can also be moved into a pipeline for supply.

For Liquid Storage: Liquid oxygen/nitrogen is filled into cryogenic liquid tanks. It is easy to store and transport and is less likely to leak.

Technical Specification

PRODUCTION UBT-50 UBT-100 UBT-200 UBT -250 UBT -300 UBT-400 UBT-500 UBT-600 UBT-800 UBT-1000
OXYGEN (NM3/HR) CYLINDERS PER DAY 50 100 200 250 300 400 500 600 800 1000
200 400 800 1000 1200 1600 2000 2400 3200 4000
OXYGEN CYLNDER PRESSURE 150BAR TO 200BAR
NITROGEN NM3/HR 50 100 200 250 300 400 500 600 800 1000
OXYGEN PURITY-% 99.7 99.7 99.7 99.7 99.7 99.7 99.7 99.7 99.7 99.7
NITROGEN (%) 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9 99.9