| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for separately recovering an aromatic compound and hydrogen chloride from a hydrogen chloride gas containing the aromatic compound. SOLUTION: The separation and recovery method contains a chlorination step to react an aromatic compound with chlorine to obtain a chlorinated aromatic compound and hydrogen chloride; a hydrogen chloride purifying step to dissolve the hydrogen chloride gas containing the aromatic compound in a chlorinated aromatic compound to obtain a gas composed mainly of hydrogen chloride and a solution containing hydrogen chloride, the aromatic compound and the chlorinated aromatic compound; a hydrogen chloride recovering step to separate and recover the gas composed mainly of hydrogen chloride from the solution containing hydrogen chloride, the aromatic compound and the chlorinated aromatic compound; and an aromatic compound recovering step to separate and recover a fraction composed mainly of the aromatic compound from the fraction composed mainly of the aromatic compound and the chlorinated aromatic compound. COPYRIGHT: (C)2007,JPO&INPIT
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