Procedure to improve the dynamic behavior of a coal-fired power plant with primary and / or secondary demands of the power grid operator with respect to the supply of power to the grid and coal-powered power plant

摘要

Procedure to improve the dynamic behavior of a coal-fired power plant with primary and / or secondary demands of the power grid operator with respect to the power supply to the network, the power plant presenting a nominal power (RC) and operating with a household (1), which comprises at least one combustion chamber for burning the fuel, at least two coal spray plants (2.1, 2.2, 2.3, 2.4) that have a direct feed system for the crushing of the fuel, in the that in the case of direct feed systems, some conduits for pulverized coal (3.1, 3.2, 3.3, 3.4), which leave the spray plants (2.1, 2.2, 2.3, 2.4), serve the corresponding burners, presenting at least one of these coal spray plants (2.4) an additional indirect feed system, the indirect feed system having at least one silo (5) and distribution elements (10), and indirectly supplying the pulverized coal through the indirect feed system to the combustion chamber and directly supplying the additional coal spray plant (s) (2.1, 2.2, 2.3) ) the coal pulverized to the combustion chamber through the direct feed system, and in which in case of an increase in the primary and / or secondary demands of the power grid operator with respect to the supply of current to the network the amount of pulverized coal supplied indirectly through the silo (5) and the distribution elements (10) in comparison with the actual momentary yield or in comparison with the quantity of pulverized coal supplied in each case through the plant (s) (s) coal spray (2.1, 2.2, 2.3, 2.4) and in this respect the pulverized coal available in the silo (5) is extracted and introduced into the combustion chamber and into which, in the case of a reduction in the primary and / or secondary demands of the power grid operator with respect to the supply of power to the grid, reduces the amount of pulverized coal supplied indirectly through the silo (5) and the elements of distribution (10) compared to the actual momentary yield or compared to the amount of pulverized coal supplied in each case through the coal spray plant (s) (2.1, 2.2, 2.3, 2.4) and to this In this case, the pulverized coal produced in excess by the spraying plant (2.4) is stored in the silo (5), characterized in that the pulverized coal with an indirect supply through in each case a deviation for pulverized coal (6) arranged in The duct for pulverized coal (3.1, 3.2, 3.3, 3.4) and through storage ducts (7.1, 7.2, 7.3, 7.4) is separated into a common separator (4) of a carrier gas and supplied to the silo (5) , Y because the pulverized coal through supply ducts (9.1, 9.2, 9.3, 9.4) and distribution elements (10) arranged in the supply ducts (9.1, 9.2, 9.3, 9.4) is supplied through in each case a loading device (15) and a deviation for pulverized coal (13) in addition to the ducts for pulverized coal (3.1, 3.2, 3.3, 3.4) downstream of the first deviation for pulverized coal (6).