Patent ID: 9163834
Filing Date: 2015-10-20
Classification: F02C,F22B,F23C,F23L,Y02E

Abstract:
1. A forced flow steam generator comprising a combustion chamber delimited by a gastight combustion chamber wall, wherein the combustion chamber wall has a plurality of interconnected combustion chamber wall tubes, through which flows an operating medium, and which consist of a heat-resistant steel alloy with a chromium proportion of 1.9 to 2.6 wt %, a flue gas duct connected to the combustion chamber in the flow direction of the flue gas and is delimited by a surrounding wall with a plurality of surrounding wall tubes through which flows the operating medium and which consist of a heat-resistant steel alloy with a chromium proportion of 1.9 to 2.6 wt %, a burner arrangement which has at least one burner and is arranged in the combustion chamber, at least one auxiliary heating surface through which flows the operating medium and which is arranged in the flue gas duct, at least one feed line connected to the burner arrangement or to the combustion chamber, wherein oxygen and flue gas are fed separately or together via the at least one feed line in order to obtain an oxygen-flue gas mixture, and a wall heating surface arrangement through which flows the operating medium and which is arranged in the combustion chamber between the burner arrangement and the at least one auxiliary heating surface in the flow direction of the flue gas, and at least partially covers a combustion chamber wall section, wherein the wall heating surface arrangement includes an underside associated with the burner arrangement, wherein the underside butts against the combustion chamber wall.