| 摘要 |
<p>1382035 Cooling converter waste gas hoods PENNSYLVANIA ENG CORP 10 May 1973 [12 May 1972] 22405/73 Headings F4B and F4J The gas collection hood 30 of a bottom blown converter 10 is cooled by pipes 39 connected between coolant reservoirs 67, 66 in parallel with pipes 42, 43 cooling the elbow 31 and duct 32 of the exhaust system. A heat exchanger 62 is connected between the reservoirs 66 and 67 and pumps 71, 65 circulate the coolant through the hood cooling pipes 39 during the blow period, and through the heat exchangers 62 at a lower rate during the whole of a cycle, so that adequate cooling is provided for the hood during blowing with a heat exchanger 62 of capacity only for the average heat output during the whole cycle. A by-pass is provided between the reservoirs 66 and 67.</p> |
