| 从副产物邻硝基苯甲酸生产邻氨基苯甲酸 |
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| 引用本文： | 杨继生,王洪海. 从副产物邻硝基苯甲酸生产邻氨基苯甲酸[J]. 化学世界, 1999, 0(5) |
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| 作者姓名： | 杨继生 王洪海 |
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| 作者单位： | 扬州大学工学院 |
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| 摘 要： | 介绍了利用邻硝基苯甲醛生产中产生的副产物邻硝基苯甲酸，在氯化铵存在下，经硫化碱还原制备邻氨基苯甲酸的生产方法，采用离子交换和石灰处理产生的废液，回收邻硝基苯甲酸和氯化氨，使废液循环利用，不仅减少了有毒废水的排放而造成环境污染，还实现了良好的经济效益。
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| 关 键 词： | 邻硝基苯甲酸 邻氨基苯甲酸 废水处理 循环利用 |
Production of o Aminobenzoic Acid from By product o Nitrobenzoic Acid |
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| Wang Chengyin Yang Jishen Wang Honghai. Production of o Aminobenzoic Acid from By product o Nitrobenzoic Acid[J]. Chemical World, 1999, 0(5) |
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| Authors: | Wang Chengyin Yang Jishen Wang Honghai |
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| Abstract: | With NH 4Cl and Na 2S as reducing agent, the preparation of o aminobenzoic acid from o nitrobenzoic acid, which is the by product in the preparation of o nitrobenzaldehyde was studied. The waste liquor from the preparation was treated by ion exchange and addition of lime to recover NH 4Cl and o nitrobenzoic acid. The treated effluent was recycled to the production process. It not only eliminates the pollution caused by the waste liquor, but also realizes better economic benefit. |
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| Keywords: | o nitrobenzoic acid o aminobenzoic acid waste liquor recycle |
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