Eighth International congress of applied chemistry : Washington and New York, September 4 to 13, 1912 ..-- . Figure 3. shows the approximate relation between rate ofblowing and average composition of top gas up to the time charg-ing stops. Each of the 6 points from which this curve was plottedrepresents a separate cupola, and owing to the disturbing effectof different heights and different brands of coke it is natural thatthere should be some irregularity. The results as a whole, how-ever, are fairly consistent. Figure 4. shows the approximate relation between rate of blow-ing and average temp
Eighth International congress of applied chemistry : Washington and New York, September 4 to 13, 1912 ..-- . Figure 3. shows the approximate relation between rate ofblowing and average composition of top gas up to the time charg-ing stops. Each of the 6 points from which this curve was plottedrepresents a separate cupola, and owing to the disturbing effectof different heights and different brands of coke it is natural thatthere should be some irregularity. The results as a whole, how-ever, are fairly consistent. Figure 4. shows the approximate relation between rate of blow-ing and average temperature of top gases up to the time chargingstops. Each of the points represents a separate cupola, and as 142 Original Communications: Eighth International [ Ill] Congress of Applied Chemistry 143 the height of the cupolas and other factors varied considerablyit is natural that there should be some irregularity. On thewhole, however, there is a marked increase in temperature withincreased rate of blowing. Figure 5. shows graphically the approximate relationship ofheat loss, sensible and potential, to rate of blowing. The curvesare calculated from the preceding data, which, however, are tooscanty to give very reliable results. Incidentally it may bestated that from 25 to 30 pounds of air per square foot of cupola
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