Nitrogen Gas Plants

Stage 1 – Compression Of Air

The free saturated air is drawn from atmosphere through a highly efficient dry-type suction filter into the first stage of the horizontally balanced opposed, lubricated reciprocating air compressor. The air is compressed over a multistage process to the desired air pressure (30-40 bar) and is then sent to the process skid for further use.

Stage 2- Purification Of Air

The compressed air is passed into an after cooler where the temperature is reduced to around 35 degree centigrade after which it is chilled in a chilling unit to a temperature of 12 degree centigrade and then passed through a moisture separator where the condensed moisture gets removed before entering into molecular sieve battery.

Before sending the air to the molecular sieve battery, air is passed through an oil absorber where air becomes oil free. Chilled air passes through the molecular sieve battery consisting of twin towers packed with molecular sieves to remove moisture and carbon dioxide present in the air.

Molecular sieve battery operates on twin tower system. When one tower is under production the, other tower is regenerated by passing waste nitrogen gas at 200 degree centigrade through a reactivation heater.

After interval of 8 to 10 hours, the tower under production gets exhausted and is regenerated by similar process before use and thus the cycle continues. Any dust particles gets filtered in the dust filter before air enters the air separation column.

Stage 3- Air Separation

Chilled, oil-free and moisture free air enters into multi-pass heat exchanger no. I where it gets cooled to (-80) degree centigrade by cold gained from outgoing waste nitrogen and oxygen.

Apart of this air enters a multi-pass heat exchanger no. Ii or liquefied made of special alloy tubes. This air cools to (-170) degree centigrade before passing through an expansion valve. Due to joule thompson effect, after the expansion valve, air gets further cooled down and gets liquefied before entering into bottom column after which it comes to be known as rich liquid.

The rich liquid in the bottom column enters into the feed tray of the top column. Similarly the liquid nitrogen called poor liquid enters into top column as a reflux & it takes away the heat of condensing oxygen and gets vaporized whereas the liquid oxygen flows down the trays of the top column into the condenser and then passes through a sub-cooler to a liquid oxygen pump.

Stage 4- Gasified Oxygen

In gas plants, the l. O pump pumps liquid oxygen through heat exchanger no. I & ii, where liquid oxygen gets gasified before filling in cylinders in the filling manifold.

The pure bone dry oxygen gas at ambient temperature and high pressure is filled into oxygen cylinders through manifold valves by means of the highly efficient reciprocating liquid oxygen pump.

In liquid plants, the liquid oxygen or nitrogen is filled directly into a cryogenic liquid tank (capacity of 200 liters to 50,000 liters) where it is stored and used according to requirement.

Stage 5- Nitrogen Production

Nitrogen can be produced both in gaseous as well as liquid form simultaneously without additional cost. Both commercial as well as technical grade can be produced.

We are manufacturers of latest low pressure nitrogen gas plants of the brand cryofusion and mandressi italia and employ the latest low pressure turbo technology series air separation plants of cryofusion and mandressi operating at a working pressure of 6 to 8 bar.

Our company uses rotary screw type air compressors of atlas copco and a very efficient air separation column (cold box) for achieving 99. 9% yield to give a waste nitrogen purity of nitrogen gas at the outlet of the cold box as low as 3 parts per million.

With the help of latest technology we are able to make the fuel pressure tester which boasts are perfection in manufacturing plants. These testers are available in varying specifications which differ on the basis of gas purities and capacities. We are world wide renowned manufacturer.

 

PLANT MODEL	CAPACITY (cu.m per Hr.)	PURITY (%)	CYLINDER FILLING/Day	OPERATIONAL PRESSURE(bar)	FILLING PRESSURE(bar)
BDM-N-25	25 m3	Nitrogen: 99.9% to 99.99%	100	6-7	155
BDM-N-30	30 m3	Nitrogen: 99.9% to 99.99%	110	6-7	155
BDM-N-50	50 m3	Nitrogen: 99.9% to 99.99%	200	6-7	155
BDM-N-80	80 m3	Nitrogen: 99.9% to 99.99%	300	6-7	155
BDM-N-100	100 m3	Nitrogen: 99.9% to 99.99%	400	6-7	155
BDM-N-150	150 m3	Nitrogen: 99.9% to 99.99%	600	6-7	155
BDM-N-200	200 m3	Nitrogen: 99.9% to 99.99%	800	6-7	155
BDM-N-300	300 m3	Nitrogen: 99.9% to 99.99%	1200	6-7	155
BDM-N-400	400 m3	Nitrogen: 99.9% to 99.99%	1600	6-7	155
BDM-N-500	500 m3	Nitrogen: 99.9% to 99.99%	2000	6-7	155

Note : Plants of Higher or Intermediate capacities are also available as per the Customer Requirement.

The Molecular Sieves offered by us are made matching the international standards. Compactness and user friendly design distinguish us from others. We are recognized as molecular sieves trader and these sieves can be availed at market leading prices.

 

• Medical grade oxygen as per American / European pharmacopeias.
• Molecular sieves of zeochem swiss of special grade for total carbon dioxide, moisture and hydrocarbon removal.
• Very compact design and easy to operate.

We are famous Briquetting presses manufacturer and are known world wide for our impeccable quality of the products. These presses are fast and easy to operate. The compact design of the press have comfortably sheltered the cutting edge technology.

 

• Fast and easy to operate
• Compact design
• Latest technology
• Practically zero maintenance
• Low power consumption
• Liquid air separation technology
• Skid mounted
• High purity of nitrogen >99,5% (99. 999% optional) suitable for soft drinks/juice/ beverages and industrial uses
• Liquid nitrogen pump (optional) can be added for direct compression of nitrogen into cylinders
• Single electric panel
• Cylinder filling station (optional).

We have earned great name as air compressor manufacturer and we make heavy duty air compressors. These compressors are equipped with built in integral gas vaporizer and high efficiency trays having high purity. The compressor are easy to use and operate.

 

• Heavy duty air compressor (water cooled)
• Built in liquid oxygen / nitrogen pump for high pressure oxygen / nitrogen filling
• Built in integral gas vaporizer
• High efficiency trays for high purity
• Extremely safe to use and operate
• Trouble free operation due to proven design and performance.