DEAR air separation has provided several sets of air separation equipment for the metallurgical industry for many years, and has accumulated rich experience. The equipment is operated safely and stably, adopting the whole low pressure process of molecular sieve adsorption and turbine expansion machine refrigeration. The rapid growth of enterprises in the industry withthe demand of production, the demand for air separation equipment is increasing. DEAR air separation cooperates with clients on a large set of air separation 20000/30000-600 project, it has solved the capacity and safety requirements 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 N m & sup3;/h |
Purity |
Outlet cold box pressure Mpa |
Temperature |
Note |
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Oxygen gas |
30000 |
≥99.6% O2 |
0.015 |
Normal temperature |
External compression to 2.5Mpa |
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Liquid oxygen |
360 |
≥99.6% O2 |
Inlet storage tank |
Saturated |
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Nitrogen gas |
40000 |
≤10ppmO2 |
0.008 |
Normal temperature |
Precooling system |
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Nitrogen gas |
30000 |
≤10ppmO2 |
0.008 |
Normal temperature |
External compression to 2.5MPa |
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Liquid Argon |
900 |
≤1.5ppmO2 |
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 |
