What considerations should be taken into account during the design and operation of a distillation column with two reboilers when their heat source temperatures differ?
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The temperature at the bottom of the distillation column is 98°C. Two reboilers are used: one is heated with steam at 170°C, while the other is heated with the process heat stream at 130°C. I would like to ask the experts what considerations should be taken into account during design and operation, so as to make maximum use of the 130°C hot stream, with steam at 170°C used as auxiliary heating.
It is only necessary to adjust the flow rate of the 170° steam according to the process requirements; the reboiler for the process heat materials can be left fully open without any need for adjustment.