GB970386A - An apparatus for heating gases or vapours by radiation - Google Patents

Abstract

970,386. Heating gases and vapours by direct contact with hot solids or fluids. R. WILLE. Dec. 9, 1960 [Dec. 11, 1959], No. 42479/60. Heading F4K. Gases or vapours are heated by radiation from a heat emitting liquid, viscous or solid mass at a temperature above about 700‹ C. In Fig. 2 molten white glass 1 is contained in a circular tank 2 which rotates about a pivot 3. The glass is heated by an oil burner (not shown). The gas to be heated is conveyed in a channel 8 which is open towards the glass between the edges 9 and 9<SP>1</SP>. In this region the velocity of the gas and rotating glass are the same. In Fig. 4 the gas or vapour to be heated enters the passage 21 via the channel 24 and is discharged via channel 25. The gas travels between two streams 22 and 23 of molten white glass which runs out of the tanks 27, 28 via the slots 30 and 31. At the lower end of the radiation path 21, the glass is deflected outwards and received by conveyer belts 32, 33 and taken to the surface of the liquid tanks 27 or 28. There the glass is returned to the tanks by the pushing devices 40. The glass is heated by oil burners 29. In another embodiment (Fig. 6), the gas passes over a cylindrical roller 54 which comprises troughs 55 such that on passing through the glass bath, the troughs fill with molten glass. To accelerate filling, the troughs are subject to negative pressure by withdrawing the air out of the channels through bores 56, through a central bore 57 and through an outlet connection (not shown). The negative pressure is only applied to the troughs in the glass bath. The gas to be heated enters at 70 and flows at the same speed as the roller 54. A solid layer of glass or other suitable transparent substance may be interposed between the molten mass and the gas. Specification 869,355 is referred to.