What are the dangers of dry heating heating coils?
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What are the dangers of using heating coils to heat evaporators and distillation towers while feeding materials to establish liquid levels and adding steam to heat them?
If the coil cannot be submerged, long-term use will cause uneven thermal expansion, resulting in pipe explosion and other hazards. Short-term use should not be a big problem, so be sure to pay attention to safety.
“"Evaporators and distillation towers heated by heating coils are fed with materials to build up the liquid level while adding steam to raise the temperature." This is not a big problem for a short period of time after starting the operation, but it cannot be dry-fired for a long time.
If the medium used for distillation is extremely sensitive to temperature, such an operation is extremely dangerous. The impact on the evaporator itself is also large, especially the coil.
Dry heating can easily damage the coil, and establishing the liquid level while heating can easily cause the coil to coke and affect heat transfer.
1. It will cause great damage to the equipment over a long period of time, and the deformation of the coking and bursting tube will affect the heat transfer efficiency. 2 Impact on product quality of the distillation tower (top and bottom).