化学工程2025，Vol.53Issue(10)：89-94,6.DOI:10.3969/j.issn.1005-9954.2025.10.015
急冷器内炭黑颗粒流动沉积特性数值模拟
Numerical simulation of flow and deposition characteristics of carbon black particles in quencher
尚宇勋 1虞斌 1阴昱石 1黄成龙1
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
- 折叠
摘要
Abstract
In order to study the deposition of carbon black particles on the wall of the quencher,the influence of different carbon black flue gas inlet parameters(inlet temperature Tin,inlet velocity u,particle size dp)on the deposition rate in the quencher was numerically simulated and analyzed using the DPM model in the Fluent software.The calculated results obtained through UDF are within±5％of the experimental data from related literature.The results show that within the studied range,the higher the flue gas inlet temperature,the greater the temperature gradient in the quencher,and the higher the deposition rate of carbon black particles on the wall of the quencher.The larger the flue gas inlet velocity,the higher the turbulent kinetic energy of the fluid,so the deposition rate of the particles increases accordingly.The deposition rate on the insulation layer wall and the heat exchanger tube wall increases by 7.3％-35.2％and 10.3％-48.4％.Compared with the heat exchanger tube wall,the deposition rate on the insulation layer wall is generally lower due to the smaller carbon black particle velocity and thermal electrophoretic force on the insulation layer wall.At the same time,due to the increase of the particle size of carbon black particles,the inertial force it receives is greater,and the particles cannot move well with the fluid.They hit the wall before changing the direction of the fluid movement,and the deposition rate also increases.关键词
急冷器/炭黑颗粒/温度梯度/湍流动能/沉积率Key words
quencher/carbon black particle/temperature gradient/turbulent kinetic energy/deposition rate分类
能源与动力引用本文复制引用
尚宇勋,虞斌,阴昱石,黄成龙..急冷器内炭黑颗粒流动沉积特性数值模拟[J].化学工程,2025,53(10):89-94,6.
