DNBP生产废水的精馏处理研究  

Study on DNBP wastewater treatment by distillation

作　　者：杨宗政[1] 张强[1] 陈晓英 李艳玲[3] 王洪泰[1] 

机构地区：[1]天津科技大学材料科学与化学工程学院,天津3004572 [2]天津市鑫宇环保科技有限公司,天津300451 [3]中国石化天津分公司化工部,天津300271

出　　处：《天津工业大学学报》2011年第3期51-54,共4页Journal of Tiangong University

基　　金：天津市科技支撑计划项目(09ZCKFSH02500)

摘　　要：为解决4,6-二硝基邻仲丁基苯酚生产过程中的废水污染问题,通过精馏方法使DNBP废水中的有机物由于沸点的差异而分离出来,并对釜残液中H2SO4和DNBP进行回收利用.得出精馏最佳实验条件为:常压精馏釜顶温度104℃,出水调pH=7,二次常压精馏回流比R=1,加碱量2.6 g/L.精馏出水COD值低于60 mg/L,达到了天津市《污水综合排放标准》DB 12/356-2008二级排放标准.In order to solve the wastewater pollution in 2-sec-butyl-4,6-dinitrophenol production process,distillation was used to isolate the organic matter in wastewater for the different boiling point and recycle the sulfuric acid（H2SO4） and DNBP from reactor raffinate.The best distillation experimental conditions are obtained： overhead temperature in normal pressure distillation being 104 ℃,the effluent being adjusted to pH=7,reflux ratio in second normal pressure distillation is controlled as 1,alkali content being 2.6 g/L.The COD of effluent is below 60 mg/L,which reaches the secondary discharge standards of Integrated Wastewater Discharge Standard（DB 12/356-2008） of Tianjin.

关 键 词：DNBP废水 常压精馏 共沸物 

分 类 号：TQ047.9[化学工程] X783.1[环境科学与工程—环境工程]