DEAR air separation has provided many sets of air separation plant for chemical industry for many years, with rich experience and the safe and stable unit operation. This unit adopts molecular sieve purification, booster turbine expander to supply the cooling capacity of the unit, and the whole rectification hydrogen-free argon production process. The rapid growth of enterprises in the industry is accompanied by the demand for production and the demand for air separation plant. DEAR air separation has cooperated with customers in the large-scale complete set of air separation plant KDON (AR) - 36000/70000-1200 project, which has meet the capacity demand and safety demand of the enterprise.
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Solution advantages |
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The unit adopts molecular sieve purification, booster turbine expander to supply the cooling capacity of the unit, and the whole rectification hydrogen-free argon production process, which is safe, reliable and economical. The main reasons are as follows:
The whole set of device has the advantages of low operating pressure, simple process, high equipment safety, long switching cycle of molecular sieve system, increased service life of switching valve, and reduced potential hazards. A large amount of liquid oxygen is extracted from the main cooling (K1) to minimize the possibility of hydrocarbon accumulation.
A large amount of surplus nitrogen can be sent to the water cooling tower, reducing the load of the water chiller, reducing the energy consumption and cost of air separation, so that the reliability of the device is further improved.
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PRODUCT |
OUTPUT N m³/h |
PURITY |
PRESSURE OUT OF COLD BOX Mpa |
TEMP |
NOTE |
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OXYGEN |
36000 |
≥99.6% O2 |
0.015 |
NORMAL |
EXTERNAL COMPRESS TO 2.5Mpa |
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LOX |
360 |
≥99.6% O2 |
Into tank |
SATURA TED |
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Nitrogen |
36000 |
≤10ppmO2 |
0.008 |
NORMAL |
To pre-cooling system |
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Nitrogen |
36000 |
≤10ppmO2 |
0.008 |
NORMAL |
EXTERNAL COMPRESS TO 2.5Mpa |
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LAr |
1200 |
≤1.5ppmO2 |
Into tank |
SATURATED |
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Note: measurement unit Nm3/H is measured at 0℃, 0.1013Mpa (A). It is called standard state quantity.
Note: the unit of measurement 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 large heating): ≥ two years
1.3 Heating and uncooling time of the device: ~ 36 hours
1.4 Starting time of the device (from the start of expander to the purity of oxygen product): ~ 40 hours
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Matching Units |
Unit |
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1. Centrifugal air compressor 2. Air pre-cooling system 3. Purification system 4. Booster turbine expander 5.Fractionator system 6.Oxygen compression system 7. Nitrogen compression system 8.Liquid storage system 9.Instrument control system 10.Electric control system |
1 Set 1 Set 1 Set 1 Set 1 Set 1 Set 1 Set 1 Set 1 Set 1 Set |
