In the chemical industry, the demand for air separation plant is stable. The high demand for air separation plant in modern coal chemical industry may drive the demand for large and super-large air separation plant. The 13000/22000-350 type air separation plant produced by DEAR air separation starts smoothly, all indicators reach the monitoring standard and begin to supply gas for customers. Relying on excellent products and high-quality service, DEAR air separation has received high praise from customers.
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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 |
13000 |
≥99.6% O2 |
0.015 |
Normal temperature |
External compression to 2.1Mpa |
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Liquid oxygen |
300 |
≥99.6% O2 |
Inlet storage tank |
Saturated |
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Nitrogen gas |
10000 |
≤10ppmO2 |
0.008 |
Normal temperature |
Precooling system |
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Nitrogen gas |
12000 |
≤10ppmO2 |
0.008 |
Normal temperature |
External compression to 1.0MPa |
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Liquid Argon |
350 |
≤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 |
| 1. Centrifugal air compressor | 1 Set |
| 2. Air precooling system | 1 Set |
| 3. Purification system | 1 Set |
| 4. Booster turbine expansion unit | 1 Set |
| 5. Distillation column system | 1 Set |
| 6. Oxygen compression system | 1 Set |
| 7. Nitrogen compression system | 1 Set |
| 8. Liquid storage system | 1 Set |
| 9. Instrument control system | 1 Set |
| 10. Electronic control system | 1 Set |
