Can 10,000 units meet the required proportions of various gas outputs at the oxygen production plant?

There should be no problem. With current air separation units, when expanded air is used in the process flowing into the lower column, the oxygen extraction rate can reach over 99%, while the argon extraction rate can reach 93–95%. Since the original poster has experience with air separation, they must be familiar with the concept of extraction rates, so no further explanation is needed here. When expanded air is used in the process flowing into the upper column, the argon extraction rate is lower, around 60–70%, whereas the oxygen extraction rate is typically 90–95%. Nitrogen: The oxygen yield ratio is generally between 1.1 and 1.2, or slightly higher; the difference is not significant. So with these basic figures, it’s easy to calculate the owner’s requirements. Given the target of 10,000 Nm3/h, with an oxygen extraction rate of 90%, an argon extraction rate of 70%, and a nitrogen-to-oxygen output ratio of 1.1, the approximate amounts of products are as follows: Air required = 10,000 / 20.95% / 90% = 53,036 Nm3/h; O2 = 10,000 Nm3/h; N2 = 10,000 x 1.1 = 11,000 Nm3/h; Ar = 53,036 x 0.934% x 70% = 347 Nm3/h (the proportion of Ar in air is 0.934%). This amount should be sufficient, and both the quantities of nitrogen and argon produced exceed the required levels. It is recommended to carefully adjust the product plan, by determining appropriate amounts of liquid products such as liquid oxygen and liquid nitrogen, as well as gas products, in order to ensure reasonable energy consumption. .

As long as the air volume supplied by the air compressor in summer reaches 54,000, there will be no problem. We already have a system that fails to meet this requirement in summer

That should be enough; I’ve worked with a system featuring 10,000 units, requiring a flow rate of over 60,000, and the amount of liquid argon produced exceeds the demand. Proper allocation.

The processing air volume is 60,000; oxygen amounts to 10,000, argon 350, and there is an excess of nitrogen, so it is possible to enlarge the nitrogen cooling tower and avoid using ice machines. There is also some excess liquid that can be used as a backup for subsequent systems. SUT compressing is both economical and mature.

Thank you all very much. HaiChuan Air Separation has so many experts. We have ordered 10,000 units of O2, 6,000 units of N2, and 260 units of Ar from the equipment manufacturer. The manufacturer insists that there are no problems. Is that really the case? But isn’t it unreasonable to order such a small amount of nitrogen? Surely none of it will be wasted, right?

This post was last edited by arpcd on 2012-5-10 at 22:06. They only need 6,000 Nm3/h of nitrogen – the manufacturers would be delighted about that; the tower can also be made shorter, resulting in lower investment costs. There’s nothing unreasonable about this. If we’re talking about rationality, air separation units should be built near steel mills and ammonia synthesis plants, with oxygen being used for steelmaking in the mills and nitrogen serving as a raw material for those plants. But have you ever seen such an air separation unit in China? No, it’s quite common abroad, hehe. . In China, it is common to require oxygen rather than nitrogen; for example, in steel mills, nitrogen isn’t very useful there as it is used instead as instrument air. How much energy is consumed for such replacement processes? In the past, air separation units with single-high configurations were available, those designed to produce only oxygen without nitrogen. . . Air separation requires energy consumption; the higher the purity of the oxygen and nitrogen required, and the larger the volume of gas needed, the higher the investment and energy costs will be. By artificially reducing the nitrogen extraction rate, there’s no problem at all – more nitrogen is emitted, so what’s the issue? Don’t worry; as long as the manufacturer designs the system for 6,000 units of nitrogen, it won’t even be possible to produce 10,000 units. Current air separation manufacturers are very cost-conscious. .

Thank you to this guy for pointing it out – he’s absolutely right. We’re currently working on a plan for a steel plant, and we need an oxygen production station; such a large amount of oxygen is required. Nitrogen, on the other hand, doesn’t have much use. I just think that since the gas is already compressed and energy is consumed in that process, it would be a shame not to extract the N2 as well. Hehe… I’m not yet very familiar with the specific processes involved, so I need to learn more. Thank you again; I hope you can give me more guidance in the future

The maximum amount of nitrogen that can be produced via air separation is 25,000 to 30,000. If you need 6,000 units of nitrogen, it is recommended to set the output at 10,000 or 12,000 units. The nitrogen amount ranging from 4,000 to 6,000 units, along with the impure nitrogen, should be sent to the water cooling tower. If the nitrogen demand increases further, there is still headroom for additional production.