An Investigation of Characteristics of a Loop Seal with and without Side Aeration

Abstract

Experiment was performed in a cold model circulating fluidized bed (CFB) system. The rise has 10 × 10 cm2 in cross section and 450 cm in height. The supply and return chambers of the loop seal has 10 × 10 cm2 and 50 cm height. Local sand having average diameter of 315 μm was used as bed material. It was found that the side aeration loop seal provided higher solids circulation rate than the loop seal without side aeration. In addition, it was more sensitive with the aeration flow rate. Therefore, it was suited to the reactors which required variable solids circulation rate for a nearly constant of aeration air supply. The finding has not been reported in literature.