Oxygen/ Nitrogen Gas Plants
The free atmospheric air is sucked in by a multi-stage air compressor through a filter and compressed to the working pressure. After each stage, intermediate coolers and water separators are provided. The compressed air then passes through the (evaporation) pre-cooler and then to the molecular sieve battery where the moisture and carbon dioxide are removed from the process air. It then passes through the exchanger No. 1 where it is cooled by the out-going waste nitrogen and product oxygen.
A part of this cold air then flows through an expansion machine and the balance through the 2nd heat exchanger. The ratio of the two air streams is controlled by an expansion valve, RI.
Both these streams of air then unite in the lower pressure column where it partially liquefies.
The liquid air (rich air) then passes through the expansion valve R2 to the upper column which is at a lower pressure than the lower column. Similarly the liquid nitrogen (poor liquid) travels from the lower column to the upper column through an expansion valve R3 where the separation of oxygen and nitrogen occurs. Nitrogen being more volatile passes out as a gas from the top of the column and this waste nitrogen flows through both the heat exchangers cooling the in-coming air. Similarly product oxygen is also passed through the two heat exchangers to cool the in-coming air and then to the filling manifold via a liquid pump. If a small amount of air is vented out from the upper column, higher purity nitrogen can also be obtained from this plant. R4 Valve is provided in order to fasten cooling during start-up.
Plant Specifications:
1. Production Capacity - The plant is very versatile and can be set for a cycle to produce any one of the following alternatives:- |
|
OXYGEN PRODUCTION | NITROGEN PRODUCTION | ||||||
Alternative | Gas Quantity Cu.M./Hr. | Gas Purity % |
Product Pr. Kgs/cm2 | Gas Quantity Cu.M./Hr. | Gas Purity % |
Product Pr. Kg/cm2 | |
1. | SANGHI-ORG 80 | 80 | 99.5 | 150 | *275 | 96 | 0.1 |
1A. | SANGHI-ORG 80 | 70 | 99.5 | 150 | *250 | 99.5 | 0.1 |
2. | SANGHI-ORG 100 | 100 | 99.5 | 150 | *450 | 96 | 0.1 |
2A. | SANGHI-ORG 100 | 90 | 99.5 | 150 | *400 | 99.5 | 0.1 |
3. | SANGHI-ORG 200 | 200 | 99.5 | 150 | *700 | 99.5 | 0.1 |
3A. | SANGHI-ORG 200 | 200 | 99.5 | 150 | *400 | 99.99 | 0.1 |
4 | SANGHI-ORG 300 | 300 | 99.5 | 150 | *1300 | 98.00 | 0.1 |
4A. | SANGHI-ORG 300 | 300 | 99.5 | 150 | *700 | 99.99 | 0.1 |
5. | SANGHI-ORG 400 | 400 | 99.5 | 150 | *1600 | 98.00 | 0.1 |
5.A | SANGHI-ORG 400 | 400 | 99.5 | 150 | *900 | 99.99 | 0.1 |
6. | SANGHI-ORG 600 | 600 | 99.5 | 150 | *2940 | 98.00 | 0.1 |
6. | SANGHI-ORG 600 | 600 | 99.5 | 150 | *1400 | 99.99 | 0.1 |
* About 100 CU.M./Hr of Nitrogen will be used for regeneration of driers for SANGHI-ORG 80. The above product capacities are based on ambient conditions of 15oC temperature 760mm of Hg pressure and 50% relative humidity and 0.03% of Carbon Di-oxide is allowed as impurity. |
2. Other Specifications:
SANGHI-ORG 80 | SANGHI-ORG 100 | SANGHI-ORG 200 | SANGHI-ORG 300 | SANGHI-ORG 400 | SANGHI-ORG 600 | |
Air Pressure (starting) | 55 Kgs/cm2 | 45 Kgs/cm2 | 45 Kgs/cm2 | 45 Kg/cm2 | 45 Kg/cm2 | 45 Kg/cm2 |
Air Pressure (Normal operation) |
38 Kgs/cm2 | 35 Kgs/cm2 | 34 Kgs/cm2 | 34 Kg/cm2 | 34 Kg/cm2 | 34 Kg/cm2 |
Starting Time (after defrost) |
8 Hours | 8 Hours | 8 Hours | 8 Hours | 8 Hours | 8 Hours |
Starting Time (for short stop) |
2 Hours | 11/2 Hours | 1 Hour | 1 Hours | 1 Hours | 1 Hours |
Defrost Time | 8 Hours | 8 Hours | 9 Hours | 8 Hours | 8 Hours | 8 Hours |
Defrosting cycle at normal conditions | 6 Months | 9 Months | 9 Months | 9 Months | 9 Months | 9 Months |
Cylinder Filling Manifold connections | 2 x 8 Nos. | 2 x 12 Nos. | 2 x 24 Nos. | 2 x 40 Nos. | 2 x 50 Nos. | 2 x 70 Nos. |
Cooling Water Requirement | 20 Cu.m./hr. |
30 Cu.m./hr. |
50 Cu.m./hr. |
70 Cu.m./hr. |
80 Cu.m./hr. |
150 Cu.m./hr. |
Inlet Cooling Water Temperature | 25oC | 25oC | 27oC | 27oC | 27oC | 27oC |
Total Weight (approx) | 26 Tons | 29 Tons | 45 Tons | 50 Tons | 80 Tons | 100 Tons |
Assembly Height | 7.6 Metres | 8.1 Metres | 10.5 Metres | 10.5 Metres | 10.5 Metres | 10.5 Metres |
Maximum Roof Height | 9.5 Metres | 10 Metres | 12 Metres | 12 Metres | 12 Metres | 12 Metres |
Area Required | 12x12 Metres | 12x12 Metres | 35x15 Metres | 35x15 Metres | ||
Power Supply Required | 400 Volts & 230 Volts | 400 Volts & 230 Volts | 400 Volts & 230 Volts | 400 Volts & 230 Volts | 400 Volts & 230 Volts | 400 Volts & 230 Volts |
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Description
The free atmospheric air is sucked in by a multi-stage air compressor through a filter and compressed to the working pressure. After each stage, intermediate coolers and water separators are provided. The compressed air then passes through the (evaporation) pre-cooler and then to the molecular sieve battery where the moisture and carbon dioxide are removed from the process air. It then passes through the exchanger No. 1 where it is cooled by the out-going waste nitrogen and product oxygen.
A part of this cold air then flows through an expansion machine and the balance through the 2nd heat exchanger. The ratio of the two air streams is controlled by an expansion valve, RI.
Both these streams of air then unite in the lower pressure column where it partially liquefies.
The liquid air (rich air) then passes through the expansion valve R2 to the upper column which is at a lower pressure than the lower column. Similarly the liquid nitrogen (poor liquid) travels from the lower column to the upper column through an expansion valve R3 where the separation of oxygen and nitrogen occurs. Nitrogen being more volatile passes out as a gas from the top of the column and this waste nitrogen flows through both the heat exchangers cooling the in-coming air. Similarly product oxygen is also passed through the two heat exchangers to cool the in-coming air and then to the filling manifold via a liquid pump. If a small amount of air is vented out from the upper column, higher purity nitrogen can also be obtained from this plant. R4 Valve is provided in order to fasten cooling during start-up.
Plant Specifications:
1. Production Capacity - The plant is very versatile and can be set for a cycle to produce any one of the following alternatives:- |
|
OXYGEN PRODUCTION | NITROGEN PRODUCTION | ||||||
Alternative | Gas Quantity Cu.M./Hr. | Gas Purity % |
Product Pr. Kgs/cm2 | Gas Quantity Cu.M./Hr. | Gas Purity % |
Product Pr. Kg/cm2 | |
1. | SANGHI-ORG 80 | 80 | 99.5 | 150 | *275 | 96 | 0.1 |
1A. | SANGHI-ORG 80 | 70 | 99.5 | 150 | *250 | 99.5 | 0.1 |
2. | SANGHI-ORG 100 | 100 | 99.5 | 150 | *450 | 96 | 0.1 |
2A. | SANGHI-ORG 100 | 90 | 99.5 | 150 | *400 | 99.5 | 0.1 |
3. | SANGHI-ORG 200 | 200 | 99.5 | 150 | *700 | 99.5 | 0.1 |
3A. | SANGHI-ORG 200 | 200 | 99.5 | 150 | *400 | 99.99 | 0.1 |
4 | SANGHI-ORG 300 | 300 | 99.5 | 150 | *1300 | 98.00 | 0.1 |
4A. | SANGHI-ORG 300 | 300 | 99.5 | 150 | *700 | 99.99 | 0.1 |
5. | SANGHI-ORG 400 | 400 | 99.5 | 150 | *1600 | 98.00 | 0.1 |
5.A | SANGHI-ORG 400 | 400 | 99.5 | 150 | *900 | 99.99 | 0.1 |
6. | SANGHI-ORG 600 | 600 | 99.5 | 150 | *2940 | 98.00 | 0.1 |
6. | SANGHI-ORG 600 | 600 | 99.5 | 150 | *1400 | 99.99 | 0.1 |
* About 100 CU.M./Hr of Nitrogen will be used for regeneration of driers for SANGHI-ORG 80. The above product capacities are based on ambient conditions of 15oC temperature 760mm of Hg pressure and 50% relative humidity and 0.03% of Carbon Di-oxide is allowed as impurity. |
2. Other Specifications:
SANGHI-ORG 80 | SANGHI-ORG 100 | SANGHI-ORG 200 | SANGHI-ORG 300 | SANGHI-ORG 400 | SANGHI-ORG 600 | |
Air Pressure (starting) | 55 Kgs/cm2 | 45 Kgs/cm2 | 45 Kgs/cm2 | 45 Kg/cm2 | 45 Kg/cm2 | 45 Kg/cm2 |
Air Pressure (Normal operation) |
38 Kgs/cm2 | 35 Kgs/cm2 | 34 Kgs/cm2 | 34 Kg/cm2 | 34 Kg/cm2 | 34 Kg/cm2 |
Starting Time (after defrost) |
8 Hours | 8 Hours | 8 Hours | 8 Hours | 8 Hours | 8 Hours |
Starting Time (for short stop) |
2 Hours | 11/2 Hours | 1 Hour | 1 Hours | 1 Hours | 1 Hours |
Defrost Time | 8 Hours | 8 Hours | 9 Hours | 8 Hours | 8 Hours | 8 Hours |
Defrosting cycle at normal conditions | 6 Months | 9 Months | 9 Months | 9 Months | 9 Months | 9 Months |
Cylinder Filling Manifold connections | 2 x 8 Nos. | 2 x 12 Nos. | 2 x 24 Nos. | 2 x 40 Nos. | 2 x 50 Nos. | 2 x 70 Nos. |
Cooling Water Requirement | 20 Cu.m./hr. |
30 Cu.m./hr. |
50 Cu.m./hr. |
70 Cu.m./hr. |
80 Cu.m./hr. |
150 Cu.m./hr. |
Inlet Cooling Water Temperature | 25oC | 25oC | 27oC | 27oC | 27oC | 27oC |
Total Weight (approx) | 26 Tons | 29 Tons | 45 Tons | 50 Tons | 80 Tons | 100 Tons |
Assembly Height | 7.6 Metres | 8.1 Metres | 10.5 Metres | 10.5 Metres | 10.5 Metres | 10.5 Metres |
Maximum Roof Height | 9.5 Metres | 10 Metres | 12 Metres | 12 Metres | 12 Metres | 12 Metres |
Area Required | 12x12 Metres | 12x12 Metres | 35x15 Metres | 35x15 Metres | ||
Power Supply Required | 400 Volts & 230 Volts | 400 Volts & 230 Volts | 400 Volts & 230 Volts | 400 Volts & 230 Volts | 400 Volts & 230 Volts | 400 Volts & 230 Volts |
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