Thermal power plant with improved waste heat utilization and method for operation of the same

摘要

In the case of a steam power station (24, 24a) comprising a steam generator (de) with the connected water / steam - circuit (25) and an integrated turbo-generator set (3), wherein the water / steam - circuit (25) at least one high pressure - injection cooling means (11), the injection side in the direction of flow of the water / steam - circuit (25) downstream of an evaporator (2) of the steam generator (de) into which, in the water / steam - circuit (25) which is guided in a steam stream (29) and the inlet side in the injection water supplying line connection (30a, 30b, 30c) with a downstream from a feed-water pump (9) and upstream of a high pressure preheating (10), which first supply of water removal point (12) and / or with a downstream of the high pressure preheating (10) and upstream of the steam generator (de) and a second feed water removal point (13), a solution is to be provided, which leads to a greater removal of heat of condensation from the water / steam - circuit of a steam power plant and thus an improvement of the force of the factory effect degree in the case of an at least constant steam generator effect degree. This is achieved in that the high pressure - injection cooling means (11) on the injection water, in a leading line connection (30a) with a high pressure - injection cooler - preheating (20) is connected, by means of which, under utilization of the injection water, which is supplied from the water / steam - circuit (25) the battery and / or steam supplied heat of condensation or condensation enthalpy obtained in a heat-transmitting and / or steam addition can be heated, given a suitable manner.