Products
Oxygen/Nitrogen Gas Plant
Major Features of our Oxygen/Nitrogen gas plant are as follows:
- Our plants incorporate design features, which enable them to produce high quality Nitrogen gas simultaneously with Oxygen gas production. This results in higher economical viability.
- Our plants are equipped with a highly efficient expansion engine, which helps rapid and adequate cooling. On account of this our plant operation is exceedingly stable with a consistency in gas purity.
- High standard of purity of gases.
- Low power consumption, as our plant design is of low-pressure cycle.
- Foolproof temperature indication system-electronic scanner.
- International class pressure differential gauges are foolproof liquid level indicators.
- Stainless steel control panel.
- High quality insulation by Perlite power to prevent cold loss.
- Heavy duty air compressor (4 stage) suitable to operate with the power supplied by a diesel generating set or normal power supply of 415/440 V-50 cycle.
- No bulky gas holder required.
- Low maintenance cost.
- Safe to operate.
- Liquid Nitrogen withdrawal facility (Optional)
- Single pump for filling Oxygen as well as Nitrogen (Optional)
- Separate Nitrogen pump (Optional)
- An industrial refrigerator (chilling plant) with air-cooling facility both before and after the drier battery is included in our scope of supply.
- On line Oxygen purity analyzer (optional)
- Our liquid pumps are supplied with non-lubricated cross head and therefore are hazard free for Oxygen pumping.
Process Description
Atmospheric air mainly consists of oxygen and nitrogen gases along with small quantities of water vapour, carbon dioxide, argon, helium, etc. Oxygen and Nitrogen from the air are separated due to difference in boiling points by distillation through a fractional column.
Atmospheric air is sucked in by a multi stage compressor through a filter and compressed to the design pressure. The compressed air is then passed through inter-coolers, industrial refrigerator, moisture separators, and then to the molecular sieve battery for removal of Carbon dioxide, hydrocarbons and moisture from the process air. This pure air then passes through the 1st heat exchanger, where it is cooled by the out going nitrogen and oxygen. Part of this cooled air then passed through an Expansion Engine and the other part through the 2nd heat exchanger. Both the Expansion Engine and 2nd heat exchanger help in further cooling down the air, which is finally released to the bottom of the column through an expansion valve. The air becomes liquid at this stage.
The column consists of two parts. The lower column and upper column. In between the two, lower and upper columns there is a condenser, which acts as a reflux for the lower column and as a re-boiler for the upper column. The liquid air at the bottom of lower column separates through the trays of the column to give crude oxygen at the bottom and approximately 90% pure nitrogen at the top. Crude oxygen termed as rich liquid is then expanded through an expansion valve from the lower column to the middle of the upper column. Crude nitrogen termed as poor liquid is expanded through another expansion valve from the top lower column to the top of the upper column. Due to difference in the boiling points, the pure nitrogen boils over and accumulates at the top of the upper column and oxygen (which has a higher boiling point then nitrogen) accumulates at the bottom of the upper column.
Both nitrogen and oxygen are removed through separate paths in heat exchangers, for cooling the incoming air. Oxygen is compressed to a prescribed settled pressure by a liquid pump and is directly filled into cylinders. Nitrogen is however available at a pressure of a approximately 0.5kg/cm2 and the same can be compressed into cylinders with help of an independent high- pressure compressor.
Normally the nitrogen is of 97.5 to 98.5% (Approx) purity only and is let out into the atmosphere as waste product. However, when nitrogen is to filled, into the cylinders for commercial use, the plant is controlled by a change in the valve setting to make the mixed air chamber operative to achieve the required nitrogen purity.
Technical Specification :
List of connected load for Oxygen/Nitrogen Plant 80 M3/HR
| Sr. No. | Name of the Unit | Motor |
|---|---|---|
| 1 | Air Compressor | 150 HP |
| 2 | Nitrogen Blower | 3 HP |
| 3 | Expansion Engine | 10 HP |
| 4 | Water Pump | 5 HP |
| 5 | Liquid Oxygen Pump | 3 HP |
| 6 | Molecular sieve Battery Heater | 18 KW |
| 7 | Plant Defrosting Heater | 12 KW |
| 8 | Cooling Tower | 7.5 HP |
| 9 | Chilling Unit | 5 HP |
| 10 | Nitrogen Compressor Motor | Optional |
List of connected load for Oxygen/Nitrogen Plant 100 M3/HR:
| Sr. No. | Name of the Unit | Motor |
|---|---|---|
| 1 | Air Compressor | 180 HP |
| 2 | Expansion Engine | 10 HP |
| 3 | Water Pump | 7.5 HP x 1 [close circuit] |
| 4 | Liquid Oxygen Pump | 5 HP |
| 4.a | Liquid Nitrogen Pump | 3 HP |
| 5 | Molecular sieve Battery Heater | 24 KW |
| 6 | Plant Defrosting Heater | 12 KW |
| 7 | Cooling Tower | 7.5 HP |
| 8 | Chilling Unit | 7 HP |
| 9 | Nitrogen Compressor Motor | Optional |
Overall load of energy will be about 60% of the connected load
List of connected load for Oxygen/Nitrogen Plant 200 M3/HR:
| Sr. No. | Name of the Unit | Motor |
|---|---|---|
| 1 | Air Compressor | 300 HP Slipring SPDP |
| 2 | Expansion Engine | 20 HP |
| 3 | Water Pump | 10 HP [close circuit] |
| 4 | Liquid Oxygen Pump | 7.5 HP |
| 4.a | Liquid Nitrogen Pump | 5 HP Optional |
| 5 | Molecular Sieve Battery Heater | 28 KW |
| 6 | Plant Defrosting Heater | 9 KW |
| 7 | Cooling Tower | 7.5 HP |
| 8 | Chilling Unit | 10 HP |
| 9 | Nitrogen Compressor Motor | Optional |
List of connected load for Oxygen/Nitrogen Plant 300 M3/HR:
| Sr. No. | Name of the Unit | Motor |
|---|---|---|
| 1 | Air Compressor | 500 |
| 2 | Expansion Engine | 30 |
| 3 | Lox Pump | 7.5 |
| 4 | Molecular Battery Heater | 53(40KW) |
| 5 | Defrost Heater | 12(9KW) |
| 6 | Water Pump | 20 |
| 7 | Cooling Tower - FRP | 15 |
Overall load of energy will be about 60% of the connected load
Technical Characteristic:
| 80 M3/HR | 100 M3/HR | 200 M3/HR | 300 M3/HR | |
|---|---|---|---|---|
| Air Compressor Capacity | 440 M3/Hr. at 60 Kg/cm2. | 565 M3/Hr. at 60 Kg/cm2. | 1150 M3/Hr. at 60 Kg/cm2.(Approx) | 1800 M3/Hr |
| Starging Pressure | 55 kg/Cm2 | 50 kg/Cm2 | 45 kg/Cm2 | 45 kg/Cm2 |
| Operating Pressure | 30 - 40 kg/cm2 | 30 to 40 kg/cm2 | 36 to 38 kg/cm2 | 30 kg/cm2 |
| Starting time till production | 7 Hrs. | 7 Hrs. | 7 Hrs. | 7 Hrs. |
| Defrosting time | 4/6 Hrs. | 4/6 Hrs. | 4/6 Hrs. | 4/6 Hrs. |
| Defrosting cycle at normal condition | 12 months | 12 months | 12 months | 12 months |
| Power supply required | 420V 220V 3Phase 50 Hz | 420V 220V 3Phase 50 Hz | 420V 3Phase 50 Hz | 420V 220V 3Phase 50 Hz |
| Rated through out of liquid Oxygen Pump | 80 M3/Hr. | 100 M3/Hr. | 200 M3/Hr. | 300 M3/Hr. |
| Delivery Pressue of pump | 165 kg/cm2 | 165 kg/cm2 | 165 kg/cm2 | 165 kg/cm2 |
| Cylinder connections, filling manifold | 2 x 8 | 2 x 12 | 2 x 20 | 2 x 20 |
| Cooling water requirement (Re-circulated) | 40 M3/Hr. | 40 M3/Hr. | 70 M3/Hr. | 100 M3/Hr. |
| Make-up water requirement (depending upon cooling tower and ambient condition) | Approx.0.5 M3/Hr. | Approx.0.5 M3/Hr. | Approx.0.5 M3/Hr. | Approx.1.0 M3/Hr. |
| Max. Individual item wt. | 5 Tons | 6.5 Tons | 10.2 Tons | 12 Tons |
| Gross weight | 25 Tons (approx.) | 25 Tons (approx.) | 40 Tons (approx.) | 60 Tons (approx.) |
| Insulation | Perlite. | Perlite. | Perlite. | Perlite. |
| Assembly Height | 8.0 meters. | 8.0 meters. | 11.0 meters. | 12.0 meters. |
| Area required | 200 sq.mtrs. | 200 sq.mtrs. | 300 sq.mtrs. | 500 sq.mtrs. |
| Material of construction | Copper, Brass, Steel etc. | Copper, Brass, Steel etc. | Copper, Brass, Steel etc. | Copper, Brass, Steel etc. |
| Power consumption | 1.4 units/M3 of Oxygen | 1.2 units/M3 of Oxygen | 0.9 to 1.0 units/M3 of Oxygen gas. | 1.0 units/M3 of Oxygen gas. |
| Total Power requirement | --- | --- | 400 H.P. | 620 H.P. |
Production Cycle
PRODUCT DATA FOR 80 M3/HR OXYGEN / NITROGEN PLANT
This plant can produce basically Oxygen and Nitrogen. However, the plant can be controlled to produce these product in different standard modes as given below, based on standard operating conditions:
PRODUCTION CYCLE-I
Oxygen-gaseous-dry-99.5% and above purity - 80 M3/Hr.
Nitrogen-gaseous-96-98% purity - waste product.
PRODUCTION CYCLE-II
Oxygen-gaseous-dry-99.5% and above purity - 74 M3/Hr.
Nitrogen-gaseous-99.6% to 99.8% purity - 100 M3/Hr.
PRODUCT DATA FOR 100 M3/HR OXYGEN / NITROGEN PLANT:
This plant can produce basically Oxygen and Nitrogen. However, the plant can be controlled to produce these product in different standard modes as given below, based on standard operating conditions:-
PRODUCTION CYCLE-I
Oxygen-gaseous-dry-99.5% and above purity - 100 M3/Hr.
Nitrogen-gaseous-96-98% purity - waste product.
PRODUCTION CYCLE-II
Oxygen-gaseous-dry-99.5% and above purity - 93 M3/Hr.
Nitrogen-gaseous-99.6% to 99.8% purity - 125 M3/Hr. [Nitrogen Compressor required for filling this Nitrogen into Cylinders-at extra cost]
PRODUCTION CYCLE-III
Oxygen-gaseous-dry-99.5% and above purity - 93 M3/Hr.
Nitrogen Liquid 15 to 18 Ltrs Per hour Purity 99.9%
PRODUCTION CYCLE-IV
Oxygen-gaseous-dry-99.5% and above purity - 70 M3/Hr.
Nitrogen gaseous Dry - Less than 10 PPM purity - 30 M3/Hr.
PRODUCT DATA FOR 200 M3/HR OXYGEN / NITROGEN PLANT:
This plant can produce basically Oxygen and Nitrogen. However, the plant can be controlled to produce these product in different standard modes as given below, based on standard operating conditions:-
PRODUCTION CYCLE-I
Oxygen-gaseous-dry-99.5% and above purity - 200 M3/Hr.
Nitrogen-gaseous-97-98% purity - waste product.
PRODUCTION CYCLE-II
Oxygen-gaseous-dry-99.5% and above purity - 180 M3/Hr.
Nitrogen-gaseous-99.9% Purity - 380 M3/Hr.
PRODUCTION CYCLE-III
Oxygen-gaseous-dry-99.5% and above purity - 150 to 160 M3/Hr.
Nitrogen Liquid- 99.95% Purity - 40 Ltrs./Hr.
PRODUCTION CYCLE-IV
Oxygen-gaseous-dry-99.5% and above purity - 150 to 160 M3/Hr.
Nitrogen-gaseous-99.99% Purity - 50 to 60 3/Hr. [through separate pump, the level of purity can be increased to PPM]
PRODUCT DATA FOR 300 M3/HR OXYGEN / NITROGEN PLANT:
This plant can produce basically Oxygen and Nitrogen. However, the plant can be controlled to produce these product in different standard modes as given below, based on standard operating conditions:-
PRODUCTION CYCLE-I
Oxygen-gaseous - dry-99.6/8% purity - 300 M3/Hr.
Nitrogen-gaseous - 97 - 98% purity - waste product - 500 M3/Hr.
PRODUCTION CYCLE-II
Oxygen-gaseous-dry-99.6/8% Purity - 250 M3/Hr.
Nitrogen-gaseous-dry-99.99% Purity - 110 M3/Hr. [through separate pump]
PRODUCTION CYCLE-III
Oxygen-gaseous - dry-99.6/8% purity - 260 M3/Hr.
Nitrogen-gaseous - 10 to 50 PPM Purity - 400 M3/Hr.
[through 3rd outlet] - Nitrogen Compressor Excluded.
PRODUCTION CYCLE-IV
Oxygen-gaseous-dry-99.6/8% purity - 260 M3/Hr.
Nitrogen-gaseous-dry-97/98% Purity - 500 M3/Hr.
Liquid Nitrogen - 25 Ltrs./Hr.