化学工程2025，Vol.53Issue(5)：71-76,82,7.DOI:10.3969/j.issn.1005-9954.2025.05.013
4000m3机械搅拌式发酵罐数值模拟分析
Numerical simulation analysis of 4 000 m3 mechanical stirred fermenter
喻建国 1周锦楠 1李庆生 1卢建新2
作者信息
- 1. 南京工业大学 机械与动力工程学院,江苏 南京 211816
- 2. 江苏嘉浩环保股份有限公司,江苏 宜兴 214200
- 折叠
摘要
Abstract
The top-entry and side-entry agitator combination device was used to design a 4 000 m3food waste fermenter.The effects of top-entry agitator off-bottom spacing,layer spacing and side-entry agitator horizontal deflection angle,quantity on the flow field were simulated,and the appropriate parameters for the agitator setup in the fermenter were obtained.The results show that the fluid flow in the cross-section and longitudinal section of the tank mainly exhibits circumferential flow and axial flow,respectively.As the off-bottom spacing increases,the amplitude of fluid velocity fluctuation in the upper region Ⅰ and the middle region Ⅱ σ increases volatilistically,the fluid velocity in the lower region Ⅲ increases and then decreases,and the bottom solid phase volume fraction increases.As the layer spacing increases,σ increases volatilistically,the fluid velocity in the lower region Ⅲchanges less,and the bottom solid phase volume fraction changes less and then gradually increases.As the horizontal deflection angle increases,σ decreases and then increases,the fluid velocity in the lower region Ⅲincreases,and the bottom solid phase volume fraction decreases and then increases.As the quantity increases,σincreases and then decreases,the lower region Ⅲ fluid velocity increases,and the bottom solid phase volume fraction increases.The comprehensive performance of the fermenter is the best when the off-bottom spacing d1=4 m,the layer spacing d2=5 m,the horizontal deflection angle α=15° and the quantity n=2-3.关键词
餐厨垃圾/搅拌器/流体流动/固相体积分数Key words
food waste/agitator/fluid flow/solid phase volume fraction分类
资源环境引用本文复制引用
喻建国,周锦楠,李庆生,卢建新..4000m3机械搅拌式发酵罐数值模拟分析[J].化学工程,2025,53(5):71-76,82,7.
