| 摘要 |
<p>Provided is a novel regenerative heat exchanger (100) and a method for heating a gas in the heat exchanger. The regenerative heat exchanger (100) features a chamber separated into a plurality of annular concentric spaces, including: a first, inner annular space (112) defining a hot collection chamber; a second (106), outer annular space concentric to and around the first space defining a cold collection chamber; and a third annular space (116) defining a heat exchange zone concentric to and between the first and second spaces. The heat exchange zone (116) contains a particulate heat transfer material (117). The third space (116) is supported on the inside by a concentrically disposed hot grid (114), and the external diameter of the third annular space (116) is less than about double the internal diameter of the third annular space. The invention has particular applicability to the feeding of hot blast to a blast furnace in the iron making industry.</p> |
