Is the pressure swing adsorption oxygen production equipment often equipped with a radial bed process? Which one does it well?
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This post was last edited by aiyana on 2015-6-24 at 14:09. I would like to know which types of VPSA oxygen generation equipment have low energy consumption in recent years. I’ve heard that radial bed technology is being used nowadays; which companies are good at producing such equipment? If anyone who knows the answer does, please reply. Thank you so much!
From what I understand, radial beds consume much less electricity compared to traditional axial devices. In general, radial beds are used in order to reduce energy consumption, and this is also the reason why VPSA processes increasingly favor radial bed technology these days. There are many manufacturers that produce radial beds, but those that truly do a good job require more careful selection. In my opinion, Peking University Pioneer’s VPSA oxygen production technology is widely recognized as high-quality, and it has achieved excellent results.
The advantages of radial beds are evident: in addition to low energy consumption, there is no need to replace the molecular sieve, as it can be filled once and for all, which ensures that there is no need to stop the operation and maintains stability. Looking at the VPSA oxygen production technology over these past two years, Peking University Pioneer’s radial bed equipment performs well; its technology is of high quality and its performance metrics are at a relatively advanced level, which indeed makes it promising.
This post was last edited by shinykers on 2015-6-28 21:50. The person above is correct – Peking University’s radial beds were developed with significant time and effort specifically for VPSA, and they have clear advantages. Some manufacturers, in an attempt to create the illusion of having radial beds, use technologies that were discarded from larger air separation units; such approaches are not reliable at all.
The radial beds in PSA are indeed different from those in large-scale air separation units; there are significant differences in flow velocity distribution, dead space, and so on.
Radial flow may be quite challenging, but its prospects are attractive. In axial flow adsorption towers, it is difficult to achieve proper air flow distribution in larger systems
It is well known among industry insiders that the few domestic companies that have started to work with radial flow did so by learning from Praxair. It should be noted that it is claimed externally that the energy consumption is lower than that of the axial type, yet even those within the company admit that no calculations have been done. When it comes to stability, radial flow systems have only been in use for a year or two, and there are only one or two such systems in operation; so how can we talk about stable operation? At the beginning of 2016, problems arose with the molecular sieves in two sets of equipment at China Nonferrous Metals Group’s CCS project in Zambia; as a result, the group issued another tender to purchase new molecular sieves. These are all recent projects by Peking University Pioneer
Air Liquide was one of the first companies to develop radial flow adsorbers~~ however, many of the key technologies have not yet been fully mastered by domestic manufacturers~~
Radial flow technology – that’s something only foreigners can do; those in China who claim to be able to do it are just bluffing! Which molecular sieves do not require compacting, and which rely on the weight of the molecular sieve itself! It’s all just deception!