Pressure problem of mixing two flammable gases
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Generally speaking, when two gases are mixed, it is a good process condition if the pressure of the gas being introduced is slightly higher than that of the main gas by 10%-20%. I have a question now: if the pressure of the gas being introduced is much higher than that of the main gas (by a factor of more than ten), with a flow rate ratio of about 1:4 between the two gases, can they be mixed directly using a gas mixer? Is it still necessary to adjust the incoming gas to a pressure slightly higher than that of the main gas stream using a pressure regulator in order to mix them? I would be extremely grateful if the experts in this forum could help answer my questions!
What does a mixer look like? It should have expansion and cushioning effects
This post was last edited by Awui Lingshan on 2015-7-28 08:19. Physically, it’s fine to simply feed the gas into the system, but the design pressure of the main gas pipeline system still needs to be taken into account. If the pressure of the gas being fed in is much higher than that of the main gas (by a factor of ten or more) – unless the feeding system is much smaller than the main system – then the design pressure of the main system is usually insufficient; such a setup violates regulations and is also dangerous. Therefore, a pressure reducing valve is generally installed before the gas is fed in, and it’s best to add a switch for automatic shutdown. The owner’s feeding ratio is 1:4, so it’s advisable to install such a device