Dynamic control method of particle distribution uniformity in the rolling circulating fluidized bed (RCFB)

• Main Authors: Tong Zhao, Xingwan Ding, Zhilong Wang, Yanchao Zhang, Kai Liu
• Format: Article
• Language: English
• Published: Taylor & Francis Group 2021-01-01
• Series: Engineering Applications of Computational Fluid Mechanics
• Subjects: the rolling circulating fluidized bed (rcfb); dynamic control; air distribution plate; numerical simulation
• Online Access: http://dx.doi.org/10.1080/19942060.2020.1871417

This paper mainly proposed a dynamic control method of particle distribution uniformity in a rolling circulating fluidized bed (RCFB) by using an air distribution plate. An Euler–Euler numerical simulation approach which is called two-fluid flow model is used to simulate the behaviors multiphase flow within the RCFB. Six different tilt angles θ which are θ = 2°, 5°, 8°, 10°, 12° and 15° are used for the fixed inclination state of the RCFB, meanwhile, eight different inclined angles φ which are φ = −2°, −5°, 0°, 2°, 5°,8°, 10° and 12° are used for the location of the air distribution plate. After performing the simulation, the following three different conclusions are obtained. Firstly, with the increase of θ, serious uneven distribution behaviors for particles are founded at the lower position of the riser which is a part of the RCFB. Secondly, by adjusting φ, the uneven phenomenon of particles distribution behaviors is able to be alleviated no matter how θ changes for the RCFB. Thirdly, a function relation between θ and φ is obtained, which is verified by using the dynamic control method based on the dynamic mesh model in the RCFB.