GB1276398A - Apparatus for treating or mixing gases - Google Patents

Abstract

1276398 Mixing gases MIDLAND-ROSS CORP 22 July 1970 [29 Sept 1969] 35555/70 Heading B1C [Also in Division F4] Apparatus for mixing gases in flow consists of a casing 26 through which one gas flows, as shown from a compressor 30, and a series of nozzles 34 which discharge a curtain of the second gas. A baffle 62 which is preferably spaced downstream of the nozzles by a distance less than one-third of the diameter of the casing, has an opening which substantially follows the outline of the curtain. The nozzles may be arranged in a circular ring as shown, or as a series of straight tubes forming a polygon (Figs. 3 and 4, not shown) or, where the casing is rectangular, may be parallel nozzle tubes (Fig. 6, not shown). The opening in the baffle may be circular, or a central part 64 may be inserted to form an annular slot. The central part 64 may be raised or lowered relative to the outer part 62 so that the recirculation zones downstream of the two parts terminate at the same distance from the nozzles 34. The nozzles may discharge downwardly (Fig. 6, not shown) or upwardly, as shown. As described, the apparatus is a fume incinerator, in which waste gases flow through the casing and fuel gas is supplied to the nozzles. Flame stabilization bars 39 are fitted downstream of the nozzles and the baffles 62, 64 may be coated on their downstream surfaces with refractory material.