Circular economy is also characterized by resource conservation and recycling, which is a harmonious economic development mode with the environment. All materials and energy can be used reasonably and persistently in this continuous economic cycle, in order to reduce the impact of economic activities on the natural environment as small as possible. As an emerging industry, the market development in the future is inestimable. With the constant promotion of circular economy by the country, DEAR air separation always insists on innovative research and development, providing advanced and reliable air separation equipment for users, promote the development of circular economy. A few days ago, the KDON (Ar)-8000/2000-240 project cooperated with customers by DEAR air separation was highly praised by 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. Meanwhile, liquid oxygen self-pressurization is adopted to reduce oxygen compression system. 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 |
8000 |
≥99.6% O2 |
0.08 |
Normal temperature |
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Liquid oxygen |
300 |
≥99.6% O2 |
Inlet storage tank |
Saturated |
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Nitrogen gas |
14000 |
≤10ppmO2 |
0.008 |
Normal temperature |
Precooling system |
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Nitrogen gas |
2000 |
≤10ppmO2 |
0.008 |
Normal temperature |
External compression to 1.3MPa |
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Liquid Argon |
240 |
≤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
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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. Liquid storage system 7. Nitrogen compression system 8. Instrument control system 9. Electronic control system |
1 Set 1 Set 1 Set 1 Set 1 Set 1 Set 1 Set 1 Set 1 Set |
