Patent ID: 9291348
Filing Date: 2016-03-22
CPC Classification: F23J,F28D,F28F,Y02E

Claim Text:
1. A flue gas reheater for use in a flue, the flue comprising a high temperature section and a low temperature section which are divided by a desulfurization tower, the flue gas reheater comprising: a) a heat absorption section; b) a first heat release section; c) a second heat release section; d) a control system; e) circulation pipes; f) a flow control valve; and g) temperature sensors; wherein the heat absorption section is disposed in the high temperature section of the flue in front of the desulfurization tower; the first heat release section is disposed inside the low temperature section of the flue behind the desulfurization tower; the second heat release section is disposed outside the flue for heating a condensate, and the control system is also disposed outside the flue; the first heat release section and the second heat release section are connected to the heat absorption section via the circulation pipes; a heat transfer medium is disposed inside the circulation pipes; the circulation pipes comprise ascending pipes and descending pipes connecting the heat absorption section to the first heat release section and the second heat release section; both the ascending pipes and the descending pipes are disposed outside the flue; the flow control valve is disposed on a condensate pipeline entering the second heat release section; the temperature sensors are disposed in the first heat release section and the heat absorption section; and the flow control valve and the temperature sensors are all connected to the control system.