What are the differences in desulfurization processes between Huadi No.2 Plant and Jiaonai Plant?
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The desulfurization process at Huadi No.2 Plant uses PDS combined with tannin, while Jiaonai Plant employs the HPF method for desulfurization. What are the differences in their process design, equipment selection, and operational parameters? Please ask a familiar friend to explain
As far as I know, there isn’t a big difference; the main difference lies in the internal structure of the regeneration tower, which is slightly different, as well as the internals of the desulfurization tower and the mist remover. Hope more people will discuss it.
The sulfur recovery designs also vary: the Coking and Refractory Research Institute tends to design its own patented sulfur melting vessels, while the Ansteel Research Institute uses sulfur melting devices of its own design; the Chemical Engineering Second Research Institute focuses more on designing filtration equipment. Nowadays, there are also many designs for internal-type sulfur melting vessels
I have visited hundreds of coking desulfurization sites, as well as the Coking and Refractory Research Institute and the Second Chemical Research Institute, where I had discussions with experts. Currently, many coking desulfurization projects make use of their drawings; there is virtually no dedicated design specifically for this purpose. It seems that the corrosion level is lower in the Jiaonai Plant’s processes, while the process equipment in Taiyuan is more corrosive. The environmental issues related to the sulfur melting furnace still need to be addressed further. A horizontal spiral centrifuge is a good choice for handling sulfur paste, but many users are unaware of the separation requirements; the key factors are the composition of the sulfur paste and the dust removal efficiency.