What are the methods for dealing with fouling in heat exchangers?
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The reboiler used in our plant’s decarburization system is a tubular heat exchanger; the shell side of this exchanger contains potassium carbonate solution, while the tube side contains low-temperature syngas at 155°C. Due to the leakage of activated carbon into the potassium carbonate solution, we found that the heat exchange efficiency of the reboiler was very poor after prolonged use. Upon disassembly, we discovered a hard layer adhering to the outside of the heat exchange tubes. Laboratory analysis showed that this layer consisted mostly of activated carbon. How can we remove this substance from the heat exchange tubes?
The materials used to form the structure here are different from those used in your case, but there is also black scaling. We have two methods for dealing with this: one is to use a cleaning gun with a capacity of over 1000 kilograms； The second is burst pipe. The effect is okay
Why not have the gas flow through the shell side and the solution flow through the tube side? This way, the pipe lining gets dirty easily and can be cleaned. The outside of this tube bundle gets dirty and is difficult to clean, while the inside of the tube bundle cannot be cleaned.