BOILER WITH FLUIDIZED BED AND SOLID PARTICLE SEPARATOR Russian patent published in 1995 - IPC

FIELD: heat-power engineering. SUBSTANCE: boiler has at least two solid particle recirculation loops: inside and outside the furnace. Used in first loop as solid particle separator is reburning vortex with vertical axis of rotation which is formed by inlet tangential to arbitrary cylindrical surface inscribed in center portion of above-bed portion of furnace of fuel-and-air mixture and counter flows of secondary air shifted horizontally. Used as separator in second solid particle recirculation loop is bundle with staggered V-shaped members secured to tubes of slag screen brought out from rear wall. These members are mounted with the projection towards gas flow in first and each odd row in way of gas flow; in the second and each even row, these members are mounted with their recess toward gas flow, thus reducing aerodynamic resistance and enhancing efficiency of separation, reliability and economical efficiency due to reduction of reburning and toxic discharges. EFFECT: reduced aerodynamic resistance; enhanced efficiency of separation, enhanced reliability and economical efficiency due to reduction of reburning and toxic discharges. 7 cl, 7 dwg