Why is steam used to heat the furnace tubes?
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Why is steam used to heat the furnace tubes? For extinguishing fires?
It ensures that heat exchange is uniform and controllable as the medium flows through the furnace tube; otherwise, it can easily lead to localized overheating and damage of the furnace tube.
If the unit is in the drying stage, steam is introduced to prevent heat loss due to the lack of fluid flow inside the furnace tubes, which could lead to dry burning and localized overheating that causes the furnace tubes to creep and bend. At the same time, when there is no catalyst in the reactive furnace tube and no heat absorption occurs due to medium reactions, it is best not to use steam to heat the tube to the normal reaction temperature, as this will result in a large temperature difference between the inner and outer walls of the tube as well as uneven heating around the tube, leading to bending and deformation.
Our heating furnace uses steam for several purposes: it serves to extinguish fires, to preheat materials, and it is also used to feed into oil and gas pipelines in order to increase the flow rate and reduce reaction time
Used for maintenance purging; not in use normally
This should be called smoke-suppressing steam. By introducing steam into the combustion zone, more air is drawn in, which enhances the mixing and turbulence between air and gas, resulting in a more complete and efficient combustion and reducing carbon deposition； On the other hand, water vapor at high temperatures reacts with the precipitated carbon black in a water-gas reaction to eliminate the formed carbon black. The following reaction equation: H2O + C ≈ CO + H2. This is the company’s secret technology… don’t tell anyone about it… :lol
Everyone has gained something from their combined learning; recently, there was a pyrolysis furnace being worked on
Increase the medium flow rate to prevent coking.