Patent ID: 6470834
Filing Date: 2002-10-29
Classification: F22B,F23G,F23J,Y02E

Abstract:
A method for utilizing the heat in flue gases which contains condensable compounds, solid suspended particles and dust for production of hot liquids and/or gases, where in the condensable compounds, solid suspended particles and dust are made harmless by contacting the flue gases with a cold particulate material which is sprinkled and/or sprayed over the flue gas which arises in a first vertical zone in order to cool the flue gases and simultaneously filtrate/condense the flue gases content of condensable compounds, solid suspended particles and dust, characterized in thatafter contacting the flue gases in the first zone, the heated particulate material is collected at the bottom of the vertical first zone and transported to a second zone where it is contacted with, heat transforming surfaces of one or several heat exchangers submersed into the particulate matter for transferring the heat which the material gained from the flue gases to one or several external heat carrying media in liquid or gas phase, and in that after passing the one or several heat exchangers in the second zone, the cold particulate material is circulated back to be sprinkled/sprayed above the flue gas in the first zone.