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[fahctory]

Hi everyone,

I’m currently working on a process design where a liquid stream needs to be heated from 75°C to around 350°C, and I’d like to get some insight on the most appropriate heating strategy.

Specifically, I’d like to ask:

1. Regarding the heating medium,

   • Is it still practical to use steam at this temperature range?

   • If so, what steam conditions (pressure/temperature) are typically used?

   • Or would hot oil / thermal fluid be a better and safer option?

2. From a design and operability standpoint,

   • Is it better to use two heating stages (e.g., preheater + main heater),

   • Or a single heater designed to reach the target temperature directly?

Thank You in Advance!