GAS-DISTRIBUTION SCREEN Russian patent published in 1997 - IPC

FIELD: fluid-bed furnaces used in power engineering, industry, public utilities, and agriculture. SUBSTANCE: screen caps 1 installed on plate at certain pitch have wall 2 thickened in top part of cap 1 where is at least one hole 3 receiving partitions 4 forming sets of diffusion channels 5 and 6. In addition, upper set of channels 5 has larger sectional area and is placed horizontally while bottom set of channels 6 is inclined downwards. Part of air passed through bottom channels 6 inclined to screen foot ensures mixing and transporting lumpy field accumulating usually in bottom part of fluid bed to bed discharge port and changeable partitions 4 provide for change of aerodynamics of jets through caps 1 thereby making this screen universal. EFFECT: enlarged functional capabilities. 2 cl, 3 dwg