Engineering Solutions Related to the Furnace Arrangement of a Boiler Designed for Operating at Supercritical Steam Conditions

摘要

When developing a coal-fired power unit designed for operating at supercritical steam conditions (SSCs), it is necessary not only to achieve high economic performance and the high reliability of a new power unit, but also to tackle many problems related to the efficient combustion of the solid fuel without exceeding the future standards for limitations on emissions of harmful substances into the atmosphere. The technological methods of suppression of nitrogen oxides capable of providing the permissible NO_x emissions are discussed. The results of calculations are given that demonstrate the feasibility of achieving the purpose in view by means of installation of new low-NO_x burners and staged injection of the fuel even on combustion of the Ekibastuz black coal high in ash content.