DE2122272A1 - Process for carrying out any endothermic process in the shaft furnace, e.g. for burning lime - Google Patents

Claims (4)

Claims :. 1. Process for carrying out any endothermic process in the shaft furnace, e.g. for burning lime, whereby the The items to be fired are preheated in a first zone and in a subsequent zone Zone of the direct action of a fuel and is subjected to cooling in a further zone and wherein the preheating zone through at least part of the for the firing process required Varmträgers is alternately penetrated in cocurrent and countercurrent, so that the usual Shaft furnace excess heat in the preheating zone is made usable again for the firing process, with also work with two Pfenschächten, the one at the bottom At the end of the heat zone are connected to one another in such a way that fresh combustion air is in one of the shafts in the first warm period (Primary air), introduced above the preheating zone, then in direct current through the combustion zone, then through a duct or channel connection into the second duct and in this upwards in countercurrent with the exhaust gas that has already arisen after.außen and that secondary air is fed into one or both shafts in countercurrent from below the cooling zone and combined with the primary air, whereupon by switching over in a second burning period, these processes are repeated in opposite directions, characterized in that that the fuel is fed to the fuel at more than one point to a different extent, so that a part of the fuel only with the one supplied to the shaft from the dunking Cooling air burns. 2. The method according to claim 1, characterized in that the fuel at the beginning of the combustion zone is supplied in two places, the fuel-air ratio in one place over 1.0 and in the other place is below 1.0. From Deet # d> eo patents «! ohn · J · * · _ 2 - Guaranteed transfer το · UnterUaen, die xur loiomedianta * ·· WWderfl * b · nldrt o ·· * «« ¹ · ¹ · * »* · 209832/0547 bad original 3. The method according to claim 1, characterized in that except at the beginning of the burning zone also
fuel is supplied between the shafts. 4. The method according to claim 3i, characterized in that that the fuel supplied between the shafts between the two cooling air flows supplied from below is burned in the counterflow shaft. 5. Method according to claim 1, characterized in that g e k e η η. draws that in a two separately arranged Furnaces having shafts with lateral overflow channels, the fuel in the cocurrent shaft is only fed to the fuel to the extent that its combustion is still ended in the cocurrent shaft, and that further fuel in the countercurrent shaft in the area of the slopes of the fuel
is fed under the connecting channels between the two shafts, which burns with the air supplied from below this shaft or with the residual air from the direct current shaft. The patent attorneys
Dipl.-Ing., W. Meissner Dipl.-Ing., H. Tischer From the German Patent Office without any Guarantee herjc- = t - :. e copy το » Documents, dia z:; r V'-Tirt Rendering «not suitable BATH ORIGINAL 209832/054? Blank page