CAJ | 학술논문

为回收利用化工厂废硝酸，本文利用此废硝酸直接硝化对甲酚制取高性价比的医药中间体邻硝基对甲酚，以紫外吸收光谱为检测手段，跟踪游离硝酸根紫外吸光度的变化，获得最佳废酸处理工艺为：油水体积比5：34，温度30℃，转速600r/min ，硝酸与对甲酚的物质的量之比为1：0．8，处理后，使废水中硝酸含量下降了82％，邻硝基对甲酚（以对甲酚计）收率达79．5％．
위회수이용화공엄폐초산，본문이용차폐초산직접초화대갑분제취고성개비적의약중간체린초기대갑분，이자외흡수광보위검측수단，근종유리초산근자외흡광도적변화，획득최가폐산처리공예위：유수체적비5：34，온도30℃，전속600r/min ，초산여대갑분적물질적량지비위1：0．8，처리후，사폐수중초산함량하강료82％，린초기대갑분（이대갑분계）수솔체79．5％．
In this paper ,waste nitric acid from chemical works was directly used to nitrate p-cresol to prepare 2-Nitro-p-Cresol which is a cost-effective pharmaceutical intermediate .To get the optimum treatment process of waste nitric acid ,UV was successfully used to detect the absorb change of the free nitrate in the solution .The result shows that ,in the treatment condition of water/oil volume ratio (3/17) ,ambient temperature (30 ℃ ) and the rotate speed (600r/min) , the concentration of nitric acid in the waste water decreased to 82% , meanwhile ,the yield of 2-Nitro-p-Cresol could reach to 79 .5% compared to p-cresol .