The application of superheated steam in the tar distillation system
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Recently, I have been in charge of the tar processing section. I would like to ask fellow sea professionals about your company’s use of superheated steam. Our plant added a little in the second stage, but not in the fractionation tower. I personally advocate adding a bit to the distillation column.
Generally, domestic processes add a little superheated steam at the bottom of the two-stage evaporator, but the foreign technology introduced by our company does not use any superheated steam. Because during the distillation process, it is highly undesirable for the materials in each distillation column to contain water.
The same is true for our company: only some superheated gas is added in the second stage, while no gas is added to the fractionation tower, as the heat available is sufficient to maintain the temperature at which the product is extracted. First of all, the temperature at the top of the secondary evaporator needs to be controlled appropriately; we keep it around 335 degrees
We add these two sections plus a small amount to the bonus tower