GB292146A - - Google Patents

Abstract

292,146. Warsitz, R. June 15, 1927, [Convention date]. Reverberatory furnaces.-In reverberatory and like furnaces a mixture of heating gas and air is led through an incandescent layer of gas-freed solid fuel immediately before entering the heating-chamber while the waste gases leaving the heating-chamber are led through an incandescent layer of gas-freed solid fuel or refractory material located immediately to the rear of the heating- chamber any water gas produced being burnt by the addition of air. In the furnace shown in Fig- 1, air is supplied through conduits 6, 8 to thetop and bottom of the fuel shaft 4 and through a conduit 10 to the incandescent zone of fuel opposite to the heating-chamber 2 to produce an oxidizing, reducing or neutral flame. The waste gases are led through a mass of gas-freed fuel or refractory material 11 any water gas produced being burnt by air supplied from the conduit 18 in the chamber 15 below a recuperator 16. Liquid or gaseous fuel may be supplied through the conduits 5, 8 instead of or in addition to air. Fig. 2 shows a reversible regenerative furnace having a fuel shaft 11 on each side of the heating-chamber 2 and regenerators 21. Air entering the right-hand regenerator 21 at the top flows through the channel 15 into the fuel in the shaft 11 and enters the incandescent zone of fuel with gas from the conduit 23. Waste gases pass to the incandescent fuel on the left of the hearth and to the channel 15 where they are mixed with air from conduit 18 to burn any water gas produced before entering the left-hand regenerator 21. In a further modification the regenerators are arranged beneath the hearth.