Sulfur dioxide gas
2020-12-20 09:53:05
The main step of combustion production is to use sulfur and pure oxygen to burn in the sulfur incinerator to generate high concentration of S02 gas, which is then dried, compressed and condensed into liquid SO2. S + O2 combustion → SO2 ↑ ammonia absorption method uses 350-400g / L ammonia water to absorb the tail gas of sulfuric acid plant. The absorption liquid contains 120-130g / L ammonium sulfite and 230-270g / L ammonium bisulfite. High concentration SO2 gas can be released by decomposition with sulfuric acid. SO2 gas is condensed to remove water, dried by concentrated sulfuric acid, filtered by coke or fiber filter, compressed to 0.5MPa, separated oil and cooled into liquid product.
Chemical formula of sulfur dioxide by combustion method:
2NH4HSO3+H2SO4→(NH4)2SO4+2H2O+2SO3↑(NH4)2SO3+H2SO4→(NH4)2SO4+H2O+SO2↑
The purity of sulfur dioxide by combustion method is relatively high, which is also our sulfur dioxide has been recognized by the majority of old customers.
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