Numerical investigation on deposition rate of mechanically mixed ash particles in an entrained flow reactor
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Numerical investigation on deposition rate of mechanically mixed ash particles in an entrained flow reactor
- 发表刊物：
- Asia-Pacific Journal of Chemical Engineering
- 摘要：
- Homogeneous nucleation and heterogeneous condensation of salt vapors near the wall of superheater or reheater tubes greatly improve the sticky propensity of deposited surfaces or impacting particles and then lead to a fast-growing rate of initial layer. Based on the deposition experiment of mechanically mixed KCl + SiO2 particles in an entrained flow reactor, a numerical model with considering the salt particle vaporization, salt vapor condensation, and its effect on SiO2 deposition is proposed for simulating impaction and adhesion behavior of molten and solid particles. The results show that deposits are mainly from the impaction of solid and molten particles and the condensation of salt vapors. The condensation rate of salt vapors in the stagnation zone at the windward side of metal probe is maximal. In comparison with the overall deposition rate, although the amount of salt vapors condensed on the probe surface can be negligible, it significantly affects the deposition rate of SiO2 particles. The coupled CFD model over a link between particle sticking and salt vapor condensation could well simulate the deposition behavior of mechanically mixed ash particles under rich-salt-vapor atmosphere.
- 合写作者：
- Yibin Wang, Xiaoxiao Wang, Houzhang Tan, Xinwei Xu
- 卷号：
- 16(05)
- 页面范围：
- e2685
- 是否译文：
- 否
- 发表时间：
- 2021-07-08