Modified Types of Spouted Beds—with the Gas Outlet Located in the Side Wall Surrounding the Annular Dense Bed—

Abstract

So as to prevent the gas flow from leaving the apparatus without permeating the annular dense bed, the upper part of the vessel was closed and holes with screen were arranged as the gas outlet, side by side, surrounding the annular dense bed in the side wall. Hydrodynamic examination showed that the effectiveness of gas-solid contact is much improved. In addition to the above-mentioned improvement, an inner cylinder was mounted vertically in the center of the vessel for the purpose of increasing the stability of the spout. The range of conditions for stable spouting was remarkably extended by the effect of the inner cylinder. © 1975, The Society of Chemical Engineers, Japan. All rights reserved.