In the HPF desulfurization process used in coking plants, can the sulfur foam produced be directly dried into powder?
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I have an idea: is it possible to use dryers (disk or rake type) to dry the sulfur foam produced by the HPF method directly into powder? It is similar to the drying process in which sulfur foam and desulfurization waste liquid are mixed together and then directly dried into powder to produce acid. Please share your opinions.
Could you please explain the specific reasons?
To do anything, one must first understand the basic data; the aspirations are noble, but reality is harsh. The resulting \"sulfur foam\" consists mainly of water, so direct drying requires a high amount of energy. Furthermore, sulfur powder undergoes a highly flammable and exothermic reaction; therefore, the heat source gas must be an inert gas free of O2. … If we continue to analyze this further, the cost must be extremely high. What does this indicate? Choosing the wrong technology for removing H2S at the source.
The analysis in the latter half mentioned above is incorrect. It should be that, by referring to Klaus sulfur recovery technology and adopting the sulfur foam gasification partial combustion method for sulfur recovery, the sulfur-containing flue gas contains water vapor, which needs to be separated and recovered later. I’m not familiar with this approach as I haven’t encountered it before; it would be better if experienced and knowledgeable friends could continue to provide further insights
Withdraw the one from floor 7. Retain the view on the 6th floor
It is mainly determined by the properties of sulfur foam; sulfur foam contains water, salts, and tar, which prevents it from drying out
This post was last edited by dmz329227 on 2022-10-9 at 15:41. From what I’ve found online, dryers can use various heating methods such as hot air, steam, or heat transfer oil, which should help to prevent contact with O2. Additionally, in traditional drum dryers, the sulfur flakes that are scraped off the drum are also exposed to air for an extended period of time while they are drying; moreover, the temperature of the sulfur just after it’s scraped off is quite high. Furthermore, dryers are very suitable for thermosensitive substances, volatile substances, and flammable and explosive materials, with many successful applications in this regard.
The particle size of sulfur foam is very fine, and it eventually turns into sulfur sludge, which is difficult to dry. Sulfur has a very low melting point