Application of CTS iron complexation process in the treatment of exhaust gases from sulfur units in refineries.
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This post was last edited by liaifeng on 2018-8-3 at 22:30. At present, Shandong Huifeng Petrochemical uses the CTS complexed iron process for the exhaust gas treatment in its 50,000-ton sulfur production facility; the sulfur production furnaces employ an ammonia combustion process. Based on the online analysis data, nitrogen oxides and sulfur dioxide levels remain in the single-digit range, indicating good performance of this system.
What medium is mainly used in your technology to handle hydrogen sulfide or sulfur dioxide?
It mainly handles hydrogen sulfide and cannot handle sulfur dioxide. After rapid cooling of the sulfur-containing exhaust gas through hydrogenation, it is fed into the CTS iron complexing unit.
The sulfur-containing exhaust gas is subjected to hydrogenation and quenching before entering the CTS iron complexing unit.
The acidic gas comes into contact with the solution in the reactor in the reverse direction; H2S in the acidic gas reacts with Fe3+ in the catalyst solution. The H2S dissolved in the catalyst solution reacts with Fe3+ there, resulting in H2S being oxidized to elemental sulfur and water, while Fe3+ is reduced to Fe2+. The reaction gas coming from the reactive blower comes into counter-current contact with the solution inside the reactor via a diffusion distributor; oxygen reacts with Fe2+ in the catalyst solution, oxidizing Fe2+ to Fe3+, thereby enabling the regeneration of the catalyst ； The degassing chamber is connected to the reactor’s cone section, and the catalyst solution in this chamber flows horizontally. The sulfur particles generated in the reactor, carried by the catalyst solution, settle due to gravity and accumulate in the reactor’s cone section. These particles are then pumped to a positive-pressure filter system using a sulfur slurry pump, where they are dehydrated to produce sulfur cakes containing 80% sulfur ； The solution that has passed through the degassing chamber enters the absorption chamber to continue participating in the reaction. The collected filtrate is pumped to be absorbed and reused.
This post was last edited by sdwfsgyykai on 2018-5-12 08:10. Currently, Shandong Huifeng Petrochemical uses the CTS complexed iron technology for the treatment of 50,000 tons of sulfur exhaust gas. At present, operations are proceeding normally, and the sulfur dioxide and nitrogen oxide emission levels from the chimneys are in the single digits. Those who are interested can take a look; you can contact me directly when you get there
Which company developed this CTS complexed iron technology? Could you recommend it?
We are using the Beijing Scenery craft kit.
This post was last edited by sdwfsgyykai on 2018-5-12 08:11. You can contact Li Jingjing