Which is more suitable for reforming units: plate exchangers or coiled tube exchangers?

Coiled tubes are sensitive to dirt; plate exchangers are sensitive to dirt and high pressure

Does it even need to be asked? It’s of course a coiled tube heat exchanger, but it’s expensive.

The pressure and temperature levels in plate exchangers are heavily restricted in the chemical industry; due to their structural characteristics, neither the temperature nor the pressure can be very high. Additionally, although plate exchangers are relatively easy to clean, if the fluid tends to cause deposits or similar issues, it becomes a problem whether they can be cleaned frequently from a practical standpoint

Do you mean the plate heat exchanger of Alfa Laval, the type with plate welding?

Yes, many plate exchangers these days need winding tubes

1 For those with substantial resources, purely technical considerations can be taken into account; however, for those with limited funds, a comprehensive evaluation is necessary. 2 For specific continuous reforming feed heat exchangers, vertical tube heat exchangers are used at small scales, offering stable operation. As the scale of the installation increases, the use of larger vertical tube heat exchangers becomes problematic, at which point the advantages of plate heat exchangers become apparent. The weakness of plate heat exchangers requires operators to be careful when raising or lowering the temperature. 3 Compared to the weaknesses of plate exchangers, coiled tubes have their advantages; the cleanliness of the reforming feed and reaction product streams is also well suited for coiled tubes. 4 Good things are liked by everyone, but..... haha