ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Numerical simulation of the drying characteristics of a high-moisture particle in a dynamic asymmetric impinging stream reactor

Chang Li, Song Yue, and Ming Li

Power Generation Branch, POWERCHINA Hubei Electric Engineering Corporation Limited, Wuhan, China

E-mail: limingsj60@gmail.com

Received: 22 June 2021  Accepted: 19 August 2021

Abstract:

Short particle residence time directly corresponds to insufficient drying effect of impinging stream reactors. Drying process and particle motion behaviours of dynamic asymmetric impinging stream reactors are investigated in this paper. The relationships of the drying characteristics with the particle residence time are studied, revealing that the high-temperature area of dynamic asymmetric impinging stream reactors varies over time. The particle residence time at T = T_b reaches a maximum value and increases by 94.1% in comparison with that in the symmetric one, and the final particle moisture content reaches zero in the main active area. Reasonably setting initial parameters of fluid and particles and geometric factors can enable the drying process to be completed in the high-temperature area, even in the main active area. For given values of TE_p0 and TE_m, the relationships of the particle residence time with the drying characteristics are shown in Eqs. (30–32).

Keywords: Impinging stream reactor; Flash drying; Particle residence time; DEM

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-021-01832-3

Chemical Papers 76 (1) 41–56 (2022)