cryogenic liquid oxygen nitrogen making plant

Nitrogen Plants

Delhi Cryogenics Products Pvt. Ltd. is a leading company for manufacturing a number of plants, including nitrogen plants. Incorporated in India in 1987, the company has a number of skilled professionals supported by well equipped manufacturing units. With the passage of time, the company has earned name and fame in the international market.

We have a number of customers located worldwide, including Indonesia, Iraq, Iran, Africa, Nigeria, South America, Dubai, Greece, Sharjah, Abu Dhabi, Mauritius, Zambia, Syria, Egypt, Peru, Kuwait and Ghana. We have supplied the machines over 30 countries and all the customers are happy with the machine.

SALIENT FEATURES:

• Low power consumption
• Single pump for filling Oxygen as well as Nitrogen
• Separate Nitrogen pump
• Fully automatic functioning
• No bulky gas holder required
• Minimum maintenance cost
• Safe and easy to operate
• On-line oxygen purity analyzer

Technical Specification (Model Selection Table)

Process Description

STEP 1 - Air Compression

Atmospheric air gets compressed at a low pressure of 5-7 bar (Gas plants) by the latest and advanced rotary compressors. The Screw / Centrifugal Type advanced technology is employed in our compressors than old bulky piston reciprocating compressor.

STEP 2 - Air Pre-Cooling

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.

STEP 3 – Purification

The air reaches a purifier consisting of twin Molecular Sieve driers working alternatively. The Molecular Sieves eradicate the CO₂ & moisture from the process air before the air enters Air Separation Unit.

STEP 4 - Separation of oxygen and nitrogen at air separation column

Oil free, moisture free and CO₂ free air enters into low pressure plate fin type Heat exchanger where the air is cooled below sub zero temperatures by air expansion process. 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.

STEP 5 – Cylinder filling

The final product in the form compressed Oxygen/Nitrogen goes to the high pressure oxygen cylinders at 150 bar or upto higher UPTO 200 BAR as required, or for pipeline supply or captive consumption.