| 摘要 |
924,739. Washing dust from gases. KOPPERS CO. Inc. June 8, 1960 [Nov. 19, 1959], No. 20141/60. Class 55 (2). Apparatus for cleaning and cooling a stream of blastfurnace gas comprises a conduit 39 having an upstream inlet and a downstream outlet 59, means, e.g. sprays 43, to introduce wash water into the gas, a plate 45 with an orifice 46 therebetween, a valve arrangement 47 lower in the conduit 39 to exert a back-pressure of gas therefrom toward the plate 45, means 63 where shown to draw off spent wash water, an enclosing conduit 37 extending from adjacent the valve arrangement 47 to the outlet 59 defining an annular gas off-flow space having a gas outlet 74 therefrom where shown, with adjacent sprays. 73, and complementary baffles 83, 85 to separate sprayed water discharged through a conduit 87. Between the sprays 73 and the baffles 83, 85 is a tilebank 75. The conduit 39 receives hot-laden gas with fine dust particles from a conduit 36 leading from a dust catcher 35 joined to a system 33 of uptakes and downcomer. To maintain the pressure in a bellchamber 19 approximately the same as that in the furnace adjacent thereto by means of furnace gas which has been cleaned somewhat, a conduit 58 therefrom communicates with the conduit 39 between the valve arrangement 47 and plate 45.
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