Numerical simulation of high temperature air combustion in
aluminum hydroxide gas suspension calcinations
aluminum hydroxide gas suspension calcinations
(1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China;
2. Hunan CSU Yeshine Science and Technology Development Co., Ltd, Changsha 410100, China)
2. Hunan CSU Yeshine Science and Technology Development Co., Ltd, Changsha 410100, China)
Abstract: The high temperature air combustion(HiTAC) process in gas suspension calcinations(GSC) was studied by using a CFD software FLUENT that can simulate the three-dimensional physical model of GSC with the k-epsilon turbulent viscous model, PDF non-premixed combustion species model, P1 radiation model, thermal and prompt NO pollution model. The simulation vividly describes the distributions of the temperature, velocity and consistency fields. Finally, the optimal operation conditions and igniter configuration of particular fuel combustion are obtained by analyzing and comparing the simulation results. And the emission quantity of NOx, CO and CO2 deduced from computation can play a role as reference. These optimal and estimated values are beneficial to practical operation.
Key words: aluminum hydroxide; gas suspension calcinations; high temperature air combustion; numerical simulation; FLUENT software