How to measure the pressure drop in the tubes after loading the catalyst?
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During the process of loading the synthetic catalyst, in order to ensure that the amount of catalyst in each tube is consistent, it is often necessary to measure the pressure drop in the tubes that have already been filled with catalyst. How is this pressure drop measured?
If anyone knows, please let me know; this issue has a direct impact on the subsequent operation of the synthesis tower
Why not? Is the gas source corrosive?
Reply to 5# losterknight: Going straight to the pressure measurement point isn’t what I meant. What I’m referring to is that after the catalyst has been loaded, and before any gas is introduced, it’s necessary to measure the pressure drop across the heat exchanger tubes. How does one do that?
It can be done by using a conversion furnace tube: a supply line for instrument air is used, connected to a pressure gauge; a orifice plate is then used to stabilize the pressure before the orifice plate, with another pressure gauge attached as well. The air line is inserted into the tube bundle through a rubber plug. The resistance of each tube is measured by reading the value on the second pressure gauge.