氨氮废水汽提精馏与MVR联用技术设计计算  

Design and calculation for ammoniacal nitrogen wastewater stripping distillation combined with MVR technology

作　　者：李雅 赵宇婧 李志强 刘晨明[2] LI Ya;ZHAO Yu-jing;LI Zhi-qiang;LIU Chen-ming(Beijing Cycle Columbus Environmental Science&Technology Co.,Ltd.,Beijing 100083,China;Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]北京赛科康仑环保科技有限公司,北京100083 [2]中国科学院过程工程研究所,北京100190

出　　处：《现代化工》2022年第4期227-230,共4页Modern Chemical Industry

基　　金：中国科学院科技服务网络计划(STS计划)(KFJ-STS-QYZD-161);北京市优秀人才培养资助青年拔尖个人项目(2018000021223ZK07)。

摘　　要：针对氨氮含量为14 g/L、进料流量为100 m^(3)/h、出水氨氮浓度<10 mg/L、回收浓氨水15%以上的体系进行了理论物料衡算,发现汽提精馏与MVR联用技术脱氨与直接蒸汽加热相比,吨废水处理的水蒸汽耗量降低了101.5 kg(不计首次开车时通入的蒸汽量),塔釜废水减量119.8 kg,回收15%浓氨水增量18.3 kg;并计算获得压缩机实际功率W_(0)=2.10×10^(6) W。理论验证了汽提精馏与MVR联用技术节能降耗的可行性。Theoretical material balance calculation is carried out for the system with 14 g·L^(-1) of ammoniacal nitrogen,100 m^(3)·h^(-1) of feed flow rate,less than 10 mg·L^(-1) of ammoniacal nitrogen in effluent and a recovery of more than 15%concentrated ammonia water.It is found that the steam consumption needed for treating one ton of wastewater by stripping distillation combined with MVR technology is 101.5 kg(excluding the steam input during the first start-up)less than by direct steam heating technology,the wastewater in tower kettle drops by 119.8 kg,and the recovery of 15%concentrated ammonia water is increased by 18.3 kg.It is obtained from calculation that the actual power of the compressor W_(0)=2.10×10^(6) W.The feasibility to reach energy conservation and consumption reduction by stripping distillation combined with MVR is verified theoretically.

关 键 词：精馏 MVR 汽提脱氨 物料衡算 压缩机功率 节能降耗 

分 类 号：X703[环境科学与工程—环境工程]