Abstract
This paper describes the process of dry quenching or cooling of coke with automatically formed inert gases, the sensible heat in the glowing coke being used to heat the cooling gases, which in turn pass through boilers, producing steam at useful pressure and economic cost without the consumption of any other fuel. Formulas, curves, and data regarding heat available and method of calculation are given, together with descriptions of installations and illustrations of plants in operation.
A detailed economic study is given which shows the savings to be expected and the approximate cost of a dry-quencher plant to cool 1500 net tons of coke per day; and composite charts giving actual operating records as well as output data and the cost of power for one plant by months for the year 1929 are included.
Analyses of coal and coke are given which show conclusively that dry-quenched coke carries less dust than wet-quenched coke.
Data giving actual results obtained by using dry-quenched coke in blast furnaces, and the advantages of substituting dry-quenched coke fines for high-priced bituminous gas coal in gas producers, are discussed in considerable detail.
A dry-quencher plant at a power station in Flint, Mich., the latest to be installed, is described in some detail and the principal technical data given.
