Metallurgical industry is an industry to develop metal mineral resources and produce various kinds of raw materials for metal products. With the progress of science and technology, the metallurgical industry has new requirements for the process, process, management and application research and development of air separation plant. The air separation plant also has the following development trends: first, large-scale and cluster; second, the core technology is gradually localization; third, refinement, which needs to develop high-efficiency energy-saving technology for different application fields; fourth, highly automated and intelligent, reduce manual operation as far as possible, and gradually establish a remote monitoring system by using the rapid development of internet technology to collect in real time according to the operation data of air separation plant, using big data analysis to provide the best suggestions for users, etc. KDON - 16000 / 35000, a large scale air separation plant cooperated by DEAR air separation company and customers, has realized the rapid, stable and efficient operation of the production process, which is highly affirmed by customers.
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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:
1.Good safety 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.
2.High reliability 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.
3.Convenient operation and maintenanceandsimple process |
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PRODUCT |
OUTPUT N m³/h |
PURITY |
PRESSURE OUT OF COLD BOX Mpa |
TEMP |
NOTE |
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OXYGEN |
16000 |
≥99.6% O2 |
0.015 |
NORMAL |
EXTERNAL COMPRESS TO 2.5Mpa |
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LOX |
700 |
≥99.6% O2 |
Into tank |
SATURATED |
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Nitrogen |
15000 |
≤10ppmO2 |
0.008 |
NORMAL |
To pre-cooling system |
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Nitrogen |
20000 |
≤10ppmO2 |
0.008 |
NORMAL |
EXTERNAL COMPRESS TO 2.5Mpa |
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 |
