Oxygen Gas Plant / Nitrogen Gas Plant
We hold expertise in fabricating Oxygen Gas Plant/Nitrogen Gas Plants. The
plants are carefully designed to produce pure nitrogen gas concurrently with
oxygen gas. The plants use an Expansion Engine and a special by-pass valve
to enable rapid and adequate cooling. These features make the plants
exceedingly stable and economically viable for the user. For full proof
temperature indication, the plant uses electronic system scanner. Also, the
system utilizes pressure differential gauges with stainless steel control
panel to accurately indicate liquid level. Further, the plant has been
insulated by Perlite power to avoid cold losses. We have equipped our plants
with 4-stage heavy duty air compressor, to utilize the power supplied by a
diesel generator or normal power supply of 415/440 V-50 cycle. Our scope of
supply also includes an industrial refrigerator/chilling plant with an
air-cooling facility before and after the drier battery. To make the liquid
pumps safe for pumping oxygen, the pumps come with non-lubricated cross
head. Our plants have been appreciated for enabling minimum wastage of
oxygen through waste nitrogen to ensure optimal production.
Special features
- Low power consumption
- Liquid Nitrogen withdrawal facility
- Single pump for filling Oxygen as well as Nitrogen
- Separate Nitrogen pump
- No bulky gas holder required
- Low maintenance cost
- Safe and easy to operate
- On-line oxygen purity analyzer
- Facility for PPM grade of dry Nitrogen Gas
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Process Description
Oxygen and nitrogen can be separated from the atmospheric air because of
different boiling points which enables easy distillation through fractional
column. A multi-stage compressor sucks-in atmospheric air which is then
compressed to a desired pressure. To remove CO2, hydrocarbons and moisture
from the processed air, the compressed air is then passed through
inter-coolers, industrial refrigerator, moisture separators, and molecular
sieve battery. This purified air is then cooled by the Nitrogen and Oxygen
in the 1st heat exchanger. Some of this cooled air is then passed through
the expansion engine and other part goes through the heat exchanger. In both
the places, the air is further cooled down to liquid state and released at
the bottom of the column through an expansion valve.
The column has been segregated into two parts lower column and upper column
along with a condenser in between. This condenser acts as a reflux for the
lower column and a re-boiler for the upper. The liquid air in lower column
separates through the trays producing crude oxygen and 90% pure nitrogen.
The crude oxygen collected at the bottom is also called rich liquid and is
then expanded using expansion valve. Due to difference in the boiling
points, pure nitrogen boils and gets accumulated at the top of the upper
column whereas oxygen collects at the bottom of the upper column.
To cool the incoming air, the released nitrogen and oxygen are removed
through a separate path in the heat exchanger. The released oxygen is then
compressed to a prescribed pressure by a liquid pump to be directly filled
into cylinders. At the same time, Nitrogen is compressed to a pressure of
almost O.5kg/cm2 which can then be compressed into cylinders using
independent high-pressure compressors.
To fill Nitrogen into cylinders for commercial use, a change in the valve
setting is made so as to make the mixed air chamber operative which in turn
facilitates better control of the plant. The plant also facilitates filling
and withdrawal of liquid Nitrogen gas (PPM Grade).
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| List connected
load for KVK Oxygen / Nitrogen gas Plants |
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80 M3/Hr |
100 M3/Hr |
130 M3/Hr |
170 M3/Hr |
200 M3/Hr |
300 M3/Hr |
| Name of the Unit |
Motor
Capacities |
| Air Compressor Motor |
150 HP |
180 HP |
180 HP |
240 HP |
300 HP |
425 HP |
| Expansion Engine Motor |
10 HP |
10 HP |
10 HP |
20 HP |
20 HP |
20 HP |
| Chilling Plant Motor |
3 HP |
5 HP |
5 HP |
7.5 HP |
7.5 HP |
7.5 HP |
| Water Pump Motor |
5 HP |
5 HP |
5 HP |
7.5 HP |
7.5 HP |
10 HP |
| Cooling Tower Motor |
3 HP |
5 HP |
5 HP |
5 HP |
7.5 HP |
7.5 HP |
| Liquid Oxygen Pump Motor |
3 HP |
5 HP |
5 HP |
7.5 HP |
7.5 HP |
7.5 HP |
| Liquid Nitrogen Pump Motor (Optional) |
3 HP |
3 HP |
3 HP |
3 HP |
3 HP |
5 HP |
| Defrosting Heater |
9 KW |
9 KW |
9 KW |
9 KW |
9 KW |
9 KW |
| Molecular Battery Heater |
15 KW |
18 KW |
18 KW |
18 KW |
30 KW |
48 KW |
| Cooling Tank Water Pump |
.5 HP |
.5 HP |
.5 HP |
.5 HP |
1 HP |
1 HP |
| Nitrogen Blower |
3 HP |
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