The problem of high suspended sulfur in desulfurization using tannin method
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In the case of desulfurization using tannin method, the suspended sulfur level is currently too high, around 1.4; the composition is normal and the circulation rate is also normal. The main issue is that there is no foam layer in the regeneration tank, or only a very small amount of foam. Could you advise on how to deal with this?
I’m not sure what type of furnace is used for gasification in your facility – whether it’s pressure-normal desulfurization or variable-desulfurization. Based on the observed phenomena, it seems that the suspended sulfur forms particles; during flotation, these particles become too large and settle directly. It is recommended to add a dispersant, or else the increased amount of gas carried out from the upstream gasification section may contaminate the solution.