How does low-purity cryogenic air separation compare to pressure swing adsorption for oxygen production? Does anyone know?
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How does low-purity cryogenic air separation compare to pressure swing adsorption for oxygen production? Does anyone know?
Deep cryogenics can be used to produce both nitrogen and oxygen; depending on the demand, PSA is considered for quantities of 2,000 to 3,000 standard cubic meters or less
In terms of purity, PSA can generally achieve only around 95%, while cryogenic methods can reach >99.6%. Regarding scale, the PSA units in use currently have a capacity of less than 10,000 units, whereas the largest cryogenic units available today can handle up to 120,000 units. As for the types of products produced, PSA can yield only oxygen and nitrogen-enriched gases, while cryogenic methods allow for the complete extraction of air components. In terms of construction costs, cryogenic systems of the same scale cost approximately 1.2 to 1.5 times more than PSA systems. The gas consumption per unit of product is also higher for cryogenic methods, at about 1.5 to 2 times that of PSA methods~~
Low-purity ones seem really impressive~ Does anyone know more about them?
Is this 10,000 the amount for a single set of equipment? As far as I know, the maximum value for a single set is 1000 Nm/3
The moderator has already explained it in detail; I’m not sure what exactly you want to compare PSA has a small footprint, requires low investment, and is simple to operate, but its purity does not reach that of cryogenic methods.
Both Huaxi and Peking University Pioneer have an oxygen production capacity of 3,000 units (with a purity of >=93%)~~
Under normal circumstances, PSA adsorption does not require high purity, and its cost is definitely lower than that of cryogenic methods. Of course, provided you just need oxygen.
I saw that Peking University Pioneer has just signed a contract worth 10,000 – impressive: lol
The purity isn’t very high, I guess it’s around 70–80%~~
VPSA oxygen production – the largest capacity in China reaches 30,000 units; it is implemented by Yanggu Copper Industry and Huaxi; it’s worth looking into. Currently, VPSA radial flow is used, with energy consumption of 0.35 kWh per standard cubic meter ()