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[Carlo717]

I have 2 beds I need to analyse and some gas flowing through them. The first set of data I have shows breakthrough after 15minutes, and the second shows it after 30mins. The second pressure is higher, which I thought would of made the gas travel through the bed faster as it would have more driving force, but it seems its slower. Is this the same as with fluids in pipes, so a fluid at higher pressure moves at a lower velocity? Conservation of momentum and all that jazz?

Thanks.

[markymaark]

You say the larger pressure extends breakthrough by 15min. If you are trying to remove some component of the gas, then a longer time means more gas has been passed through the bed--which is a good thing.

If that is the case then you would need to look at an equation describing the mass transport around each particle. I'm sure you will see a higher pressure correlating with a higher exchange rate and thus increasing the efficiency of the particle. Higher effiency will lead to more of the bed being used, and thus a longer time til breakthrough.