Selection of expansion joints for flue gas in the incineration of fluorine-containing organic waste liquids
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We are currently developing an incinerator for fluorine-containing organic waste liquids. A metal expansion joint needs to be installed in the flue gas duct between the outlet of the incinerator and the graphite quencher. However, since the flue gas contains HCl and HF, how should the lining of the metal expansion joint be designed to prevent corrosion of the joint and subsequent leakage of flue gas? The temperature of the flue gas is 1300 degrees. There is an idea now to use Monel alloy for the expansion joints; it’s not clear whether it can withstand such temperatures. Have anyone who has used such incinerator equipment or is an expert in design please provide some guidance.
The quencher supports are connected via springs, while other pipes are connected to the quencher in a flexible manner.
This should be easy to do – add a boiler to recover waste heat, which will reduce the temperature to 300-400 degrees, and then using fluoropolymer-lined materials will suffice
Graphite material, with liquid film protection for cooling
I look forward to the original poster sharing the final equipment plan; our company is also planning to install similar equipment and would like to draw on that experience.
Silicon carbide expansion joints can be used.