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TECHNOLOGY IN DETAIL
download OXYSULF SAR flow diagram
For the spent acid and sulfate regeneration the OXYSULF SAR is used.
The spent acid with the fuel gas is fed into a special designed combustion chamber to form SO2. The acid together with fuel gas is fed into the burner through compressed air and ultrasonic atomizing. For special applications there is the possibility to use H2S gas or S feed instead of fuel gas to reduce energy cost. Depending on the acid composition and possible impurities a hot gas filter after the combustion chamber maybe required to remove the solid impurities from the SO2 gas stream.
After the hot gas filter, the gas stream is treated with an OXYSULF HK plant where the conversion of SO2 to SO3 and then the hydrolysis to sulfuric acid takes place. The clean gas is discharged to the atmosphere through the main stack.
Typical application
- Petrochemical industry
References
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