METHOD OF PRODUCTION OF PORTLAND CEMENT CLINKER USING BOILER WITH CIRCULATING FLUIDIZED LAYER AND METHOD OF BOILER WORKING WITH CIRCULATING FLUIDIZED LAYER Russian patent published in 2002 - IPC

FIELD: building industry. SUBSTANCE: invention relates to a method of production of Portland cement clinker as product of a boiler with circulating fluidized layer that works with fuel with high content of sulfur. In indicated method a solid desulfurizing substance is taken among the group comprising lime, clay and iron ore and their mixtures. Ash is collected produced by boiler, sulfur adsorbed in ash is removed by heating ash to temperature in the range 1200-1300 C, ash is cooled and cold ash is used for Portland cement preparing. Method provides preparing Portland cement clinker in boiler with circulating fluidized layer and preparing gas enriched with SO₂ used in production of sulfur, sulfuric acid and derivatives of sulfur. EFFECT: improved method of production and boiler working. 17 cl, 5 tbl, 3 dwg