Why does the converter gas flow in from above and out from below?
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Why does the converter gas flow in from above and out from below?
Feeding the converter gas from above and exhausting it from below can improve yield
The volume of gas undergoing transformation is relatively large, and pressure fluctuations can occur; flow from below to above may lead to fluctuations in the bed layer, resulting in catalyst pulverization, which is not conducive to long-term stable operation and may cause accidents. With material entering from above and exiting from below, the risk of bed layer fluctuations is very low. I hope the explanation can help you
There are also those with intake and exhaust at the bottom; it depends on whether your design uses radial or axial intake
This post was last edited by 51425572 on 2015-11-25 at 16:36. I believe that axial fixed-bed reactors should generally be designed with material entering from the top and exiting from the bottom, as this ensures that the direction of the gas flow is consistent with the direction in which gravity acts on the catalyst particles. In other words, sudden pressure fluctuations can compress the catalyst bed when the gas flows downward, while upward flow can cause the particles to be blown away; if the flow velocity is too high, it turns the reactor into a fluidized bed or a gas-flow bed. As a supplementary note, radial designs may have special considerations that lead to a design where material enters from the bottom and exits from the top.
Our leader once told me: because there’s a distributor at the top, and I just said: lol
Actually, the simplest reason is that the density of gas is lower than that of solids, so gas naturally rises. It’s just like how cold air flows downward while hot air rises upward; P;P;P
I think 1) it is to ensure full contact between the gas and the catalyst so that a complete reaction can take place, and 2) to prevent the catalyst from being overturned
I think what everyone is saying makes sense.