Production cost per cubic meter of oxygen
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Colleagues working in the air separation industry, what is the approximate cost per cubic meter of oxygen?
Our oxygen cost is 0.45 yuan per cubic meter............
How is your cost calculation structured?
This post was last edited by Air separation science * on 2016-1-19 15:02. Water, electricity, steam, and gas consumed // Labor costs (for operation and equipment maintenance) // Spare parts // Equipment depreciation and interest on investment costs // Auxiliary materials (adsorbents, perlite – allocated annually) // Low-value consumables, etc
Oxygen cost: First, it is necessary to determine the oxygen production process, as different processes result in varying costs. The cost of oxygen production using PSA is around 1.3 yuan, while the cost for VPSA is about 0.4 yuan. What about the cost of liquid oxygen?
How is the oxygen in an oxygen tank calculated? By weight? Is it pressure again? How to convert it to standard volume?
For 40L cylinders, the calculation is based on the number of cylinders; those that require a large amount of gas also use cylinders for supply, but the cost is calculated in yuan per cubic meter~~
Thank you! I mean, as you said: when users with 40L cylinders take them, do they consider checking the pressure or weight of the cylinders (not to mention the gas composition), etc.? If nothing changes as usual, by what standards is the volume and weight of gas cylinders generally determined?
The typical filling pressure of 15 Mpa is usually above 13 Mpa, which customers are willing to accept; if the pressure is too low, those who are particular about quality will refuse to accept it. In fact, both the filling process and atmospheric temperature have a significant impact on the pressure inside the bottle, so there is a slight difference in pressure between filling in summer and filling in winter~~
Oh! Thank you! If calculated at 13 Mpa, and assuming compressed air is used, then with an air compressor that delivers 40 L/min at 13 Mpa, doesn’t that mean one bottle of compressed air can be produced per minute?
No, 40 L/min should be 40 NL/min (milliliters per minute at 0 degrees Celsius and 1 atmosphere of pressure). A 40-liter steel tank, when filled to 13 Mpa, has a storage capacity of around 5000 NL~~