WSA sulfur recovery and Claus sulfur recovery
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This post was last edited by liaifeng on 2018-9-3 09:21. WSA sulfur recovery involves converting hydrogen sulfide into sulfuric acid, which is then sold as the final product. In the Claus sulfur recovery process, the sulfur components are converted into elemental sulfur, which is then sold as the final product; this method is widely used in present-day applications. Dear sea friends, please analyze and explain the technical aspects of these two different sulfur recovery methods – which one is easier to operate and more mature? Also, discuss the advantages and disadvantages of each method!
WSA and the Claus process are both highly mature technologies for sulfur production, but in terms of daily operation, the WSA process is simpler. However, due to its high corrosivity, sulfuric acid has greater limitations in transportation and storage compared to sulfur.
WSA’s investment is too large, and environmental standards are not met; the sulfuric acid you produce is not sufficient to cover the interest on the investment costs for building the facility
Now some refineries use steam to operate WSA
Meeting the standards for treating Klaus’ exhaust gases is not any more difficult; moreover, I heard that Topso’s technology is now also available at significantly reduced prices!
Sulfur recovery only requires a two-stage Claus process; the complex ionic liquid process can easily meet standards below 100, and it’s also no problem to achieve levels below 50