What are the advantages and disadvantages of using the super Claus process for sulfur processing?
Thread Content
This post was last edited by liaifeng on 2018-9-1 at 12:34. I would like to ask fellow professionals: Our company is planning to set up a sulfur processing facility, and the design team is initially considering using the Super Claus process. What are the disadvantages of this process?
Advantages: It directly converts H2S into sulfur, reducing the costs associated with SO2 pipeline transportation and desulfurization in acid production, while also offering high safety； Disadvantage: The initial investment cost is high compared to H2S recovery from acid production.
May I ask which company the poster works for? Isn’t there any sulfur in it?
Putting aside the question of whether the process technology is feasible, just considering sulfur dioxide emissions alone, since the conversion rate in the Super Claus process is usually only 99.5%, it certainly cannot meet environmental regulations.
Sulfur is produced using the Claus process, but a complexed ionic liquid desulfurization unit is installed after the secondary reactor, which not only results in an extremely low environmental impact but also reduces investment costs. Sulfur is solid, which is better for producing sulfuric acid. WSA involves too high an investment and fails to meet environmental requirements.
The advantages are cost savings and a simple process. The drawback is the low sulfur recovery rate, which fails to meet environmental emission standards. If the CLaus exhaust gases are to meet environmental emission standards, further treatment is required, such as alkaline washing of the exhaust gases and sending them to thermal power plants
By adopting the CLaus process and subsequently adding an exhaust gas treatment unit, the exhaust gas emission requirements can be met
For the exhaust treatment system, what process do you plan to use?
For the exhaust gas treatment system, what approach is planned – using an alkaline solution?
The advantage of the Super Claus process is that it enables the sulfur recovery rate to be increased to over 99%; although the exhaust gas still needs to be treated, the treatment load is very low. However, the catalyst is relatively expensive, and online monitoring and control requirements are stringent; otherwise, overheating is likely to occur.
The super design achieves a recovery rate of 99.2%; without an exhaust gas treatment system, the flue gases cannot be discharged to meet the standards. To meet exhaust emission standards, conventional Claus-Scott or Consolf is recommended.