With the development of metallurgical industry, the enterprise produces all kinds of high quality and high quality carbon structural steel, alloy structural steel, seamless steel pipe and building materials. Due to the need of production, the enterprise cooperates with DEAR air separation on type 16000/20000-520 project, this solution is through multistage rectification. The characteristics of hydrogen-free argon production process solve the specific needs of enterprises.
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Solution advantages |
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This unit adopts molecular sieve purification, pressurized turbine expansion machine to supply the unit with cooling capacity, and at the same time adopts the whole rectification hydrogen-free argon production process. The choice of this process is safe, reliable and economic and reasonable. The main reasons are: 1. Good security The whole set of equipment has low operating pressure, simple process, high level of equipment safety, long switching cycle of molecular sieve system, longer service life of switching valve and reducing potential safety hazard. Main cooling (K1) extracts a large amount of liquid oxygen to ensure the possibility of the accumulation of hydrocarbon to the minimum. 2. High reliability A large amount of surplus nitrogen can be sent to the water cooling tower, which reduces the load of the water chilling unit, reduces the energy consumption of air separation and reduces the use cost, thus further improving the reliability of the unit. 3. Convenient operation and maintenance, simple craft |
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Product |
Output Nm³/h |
Purity |
Outlet cold box pressure Mpa |
Temperature |
Note |
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Oxygen gas |
16000 |
≥99.6% O2 |
0.015 |
Normal temperature |
External compression to 1.0Mpa |
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Liquid oxygen |
500 |
≥99.6% O2 |
Inlet storage tank |
Saturated |
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Nitrogen gas |
20000 |
≤10ppmO2 |
0.008 |
Normal temperature |
External compression to 1.0MPa |
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Argon gas |
520 |
≤1.5ppmO2≤4ppmN2 |
Inlet storage tank |
Saturated |
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Note: measurement unit Nm³/h is measured at 0℃, 0.1013Mpa (A). It is called standard state quantity.
1.1 take oxygen and nitrogen at different times
1.2 Operation Cycle (interval between two big heating): ≥2 years
1.3 heating and cooling time of the unit :~ 36 hours
1.4 start-up time of the device (from the start of the expansion machine to the purity index of the oxygen product ):~ 40 hours
| Supporting unit |
Unit |
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1. Centrifugal air compressor 2. Air precooling system 3. Purification system 4. Booster turbine expansion unit 5. Distillation column system 6. Oxygen compression system 7. Nitrogen compression system 8. Liquid storage system 9. Instrument control system 10. Electronic control system |
1 Set 1 Set 1 Set 1 Set 1 Set 1 Set 1 Set 1 Set 1 Set 1 Set |
