r/ChemicalEngineering • u/Revolutionary_Tie551 • Mar 16 '25

Design Boiler P&ID advice

Im currently designing a fire tube boiler for a 3rd year project and am now onto drawing my P&ID. ive attached my current design but im unsure if ive missed anything or if i am actually doing it correctly. Any advice would be massively appreciated!

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u/Dat_Speed Mar 16 '25

ti on combustion air and fuel gas inlet? lol. This is implying the system uses compressed air, which is often not true. Flow meters add significant unnecessary cost. If this is a smaller boiler (< 10 MMBtu/hr), many of these controls are not present. The most important control is level control of the boiler so the burners turn off if water level gets too low. Missing pressure indicator on boiler.

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u/nikob33 Mar 17 '25

That's true. It's unlikely a firetube is going to have flow measurement on either the combustion air or fuel flows.