纤维板热压尾气净化用湍球塔内流场均匀性研究  

Study on Uniformity of the Airflow Field in a Turbulent Ball Tower for Purification of Hot Press Exhaust Gas from Fiberboard Manufacturing

作　　者：张鑫 宋纪元 丁涛 王雷 李伟 周兆兵 ZHANG Xin;SONG Jiyuan;DING Tao;WANG Lei;LI Wei;ZHOU Zhaobing(College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,Jiangsu,China;Changzhou Yilin Machinery Co.,TD.,Liyang 213333,Jiangsu,China;Suqian Yasen Machinery Friend New Materials Co.,Ltd.,Suqian 223700,Jiangsu,China)

机构地区：[1]南京林业大学材料科学与工程学院,江苏南京210037 [2]常州益林机械有限公司,江苏溧阳213333 [3]宿迁亚森械友新材料有限公司,江苏宿迁223700

出　　处：《木材科学与技术》2024年第4期66-71,共6页Chinese Journal of Wood Science and Technology

基　　金：江苏省林业科技创新与推广项目“生物质人造板生产排气净化技术示范推广”(LYKJ[2023]12)。

摘　　要：为提升纤维板热压尾气净化系统中湍球塔除醛除尘的净化效率,研究支承板开孔率对塔内气体流场均匀性的影响。结果发现,支承板开孔率对塔内气体流场的速度分布和压降有显著影响。支承板开孔率为53.3%时,气体流场均匀性达到最优(CV值为0.295),压降较小(32 Pa),可有效地均匀驱动填料球进入流化状态。验证试验显示,湍球塔出风口处甲醛平均浓度比改进前降低,装置的净化效率明显提升。该结果可为纤维板生产排气净化系统湍球塔中其他结构优化设计提供研究思路与实验数据。To improve the purification efficiency of the turbulent ball tower for removing formaldehyde from fiberboard hot pressing exhaust gas,the authors evaluated the effect of the perforation ratio of the support plate on the uniformity of the gas flow field inside the tower.The results showed that the support plate’s perforation ratio had a significant impact on the velocity distribution and pressure consumption of the gas flow field inside the tower.When the perforation ratio of the support plate was 53.3%,the uniformity of the airflow field reached its optimum(CV value of 0.295),and the pressure consumption was relatively small at 32 Pa,which could effectively drive the packing balls into a fluidized state uniformly.The verification experiment showed that the average concentration of formaldehyde at the outlet of the turbulence tower decreased compared to before the improvement,and the purification efficiency of the device was significantly improved.The result provides research ideas and experimental data for the optimization design of other structures in the turbulence tower of the exhaust purification system for fiberboard production.

关 键 词：纤维板 湍球塔 支承板开孔率 气体流场均匀性 数值模拟 

分 类 号：TS653.6[轻工技术与工程] X701[环境科学与工程—环境工程]