| 摘要 |
<p>An apparatus and method for mixing gas streams of different temperatures and/or compositions contemplates that at least one of the streams contains particle. The apparatus includes a main duct (12) for the first gas stream and a plurality of duct assemblies (16) extending in the main duct generally transversely to the first gas stream. Each assembly has plural inlets (18) and outlets (22) for receiving and discharging separate parts of the second gas stream, moving initially generally transverse to the first stream. The assemblies each have plural secondary ducts (24,26,28) of mutually different lengths from inlet to outlet, the outlets being spaced from each other across the main duct for distributing the parts of the second gas stream into the first gas stream. A gas flow deflector (30) is connected to each duct assembly for temporarily deflecting the first gas stream before it is combined with the parts of the second gas stream.
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