声波团聚净化尿素造粒塔尾气实验研究  

Experimental study on the purification of urea granulation tower exhaust gas by acoustic agglomeration technology

作　　者：魏泽坤 黄亚继[1] 刘宇清 张荣初 王圣 李志远 朱志成 丁雪宇 张雪伟 张煜尧 高嘉炜 WEI Zekun;HUANG Yaji;LIU Yuqing;ZHANG Rongchu;WANG Sheng;LI Zhiyuan;ZHU Zhicheng;DING Xueyu;ZHANG Xuewei;ZHANG Yuyao;GAO Jiawei(Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,Southeast University,Nanjing 210096,China;Changrong Acoustic Limited Liability Company,Nanjing 210018,China;State Key Laboratory of Clean and Efficient Coal-fired Power Generation and Pollution Control,Nanjing 210023,China)

机构地区：[1]东南大学能源热转换及其过程测控教育部重点实验室,南京210096 [2]南京常荣声学股份有限公司,南京210018 [3]清洁高效燃煤发电与污染控制国家重点实验室,南京210023

出　　处：《应用声学》2024年第3期576-583,共8页Journal of Applied Acoustics

基　　金：江苏省科技成果转化专项(BA2020001)。

摘　　要：尿素造粒塔大多采用水洗工艺处理尾气粉尘,存在较为严重的细颗粒粉尘溢出和水汽拖尾问题,因此需深入探究声波团聚技术在造粒塔尾气处理方面的应用。通过实验研究了声波与喷雾对除尘效率的影响,发现声波单独作用时在3500 Hz达到最佳除尘效率,为74.49%,协同喷雾时2600 Hz即可实现相近的除尘效率,为73.83%。进一步探究其中机理,采用以粒径测试为依据的团聚效率作为评价指标,结果显示,2600 Hz声波与喷雾单独作用时团聚效率分别为30.37%和28.82%,协同作用时团聚效率大幅提升至57.95%。该研究可为后续造粒塔工程改造提供理论与数据支持。Most of the urea pelletizing towers use water washing process to treat the tail gas dust,there are more serious problems of fine particle dust spillage and water vapor trailing,so the application of acoustic agglomeration technology in pelletizing tower tail gas treatment was investigated in depth.The effect of acoustic waves and spraying on dust removal efficiency was investigated experimentally and it was found that the best dust removal efficiency of 74.49%was achieved at 3500 Hz for acoustic waves alone and a similar efficiency of 73.83%was achieved at 2600 Hz for spraying together.The agglomeration efficiency based on the particle size test was used as an evaluation index.The results showed that the agglomeration efficiency was 30.37%and 28.82%at 2600 Hz for acoustic wave and spray alone,respectively,and the agglomeration efficiency was significantly increased to 57.95%at 2600 Hz for synergistic action.This study can provide theoretical and data support for subsequent granulation tower engineering modifications.

关 键 词：尿素粉尘 声波团聚 声波频率 喷雾 除尘效率 

分 类 号：X513[环境科学与工程—环境工程]