Patent ID: 9506376
Filing Date: 2016-11-29
CPC Classification: F01K

Claim Text:
1. A fossil-fired steam generator for a steam power station, comprising: a plurality of pressure stages forming a flow path through which a flow medium flows, the flow medium comprising water/steam, wherein the plurality of pressure stages include a high pressure stage and a medium pressure stage, wherein the high pressure stage comprises in a fluid flow direction through which the flow medium flows, a preheater, an economizer, and an evaporator, wherein the medium pressure stage comprises in a fluid flow direction through which the flow medium flows an injection valve and a superheater heating surface, wherein in the high-pressure stage, an overflow line is connected to the flow path at an inlet to the high pressure stage on its inlet side and leads to the injection valve disposed upstream in the flow path from the superheater heating surface in the medium-pressure stage on a flow medium side, wherein the overflow line has two supply lines of which supply the flow medium to the overflow line, wherein a first supply line branches off on the flow medium side upstream from the high-pressure preheater and a second supply line branches off on the flow medium side downstream from the high-pressure preheater, and wherein the flow medium is injected into the inlet of the high pressure stage by a feed pump.