摘要 |
A process and an apparatus for treating exhaust gases, comprising an aeration stirring tank ( 5 ) employing an aqueous alkaline liquid, and, as a posterior stage, a gas-liquid contact device ( 7 ) and/or a packed column ( 11 ). The apparatus can remove at the posterior stage harmful gases that the aeration stirring tank fails to remove, for example, water-soluble organic compounds such as ethanol, halogenated silicon compounds such as SiCl<SUB>4</SUB>, and halogen gases such as F<SUB>2 </SUB>and Cl<SUB>2</SUB>. The process and apparatus are particularly suitable for purifying exhaust gases discharged from a semiconductor production device.
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