US1404221A - Gaseous fuel - Google Patents

Description

UNITED STATES rATsNT orrics.

J'AMES B. ROSE, OF EDGEWORTH, PENNSYLVANIA, AND JOHN HARRIS, OF LAKEWOOD, OHIO, ASSIGNORS TO CARBO-OXYGEN COMPANY, OF PITTSBURGH, PENNSYLVANIA,

A OORPORATION OF DELAWARE.

GASEOUS FUEL.

No Drawing.

T 0 all whom it may concern Be it known that we, 1) JAMES R. Rosa, (2) JOHN HARRIS, citizens of the United States, residing at 1) Edgeworth, (2) Lakewood, in the county of (1) Allegheny, (2) Cuyahoga, and State of (1) Pennsylvania, (2) Ohio, have invented a certain new and useful Improvement in Gaseous Fuel, of which the following is a full, clear, and exact description.

This invention relates to gaseous fuel, and more particularly to a fuel which is especially adapted for the purpose of cutting metals with great rapidity, where extreme cleanness of cutting is not essential. A use for which our gas is particularly well suited is for the cutting of scrap iron.

We obtain a gas having the above desirable characteristics by mixing with hydrogen as a combustible base, by-product cokeoven gas and ethylene in the proportions of from 2-}% to 12%% by volume each of such by-product coke-oven gas and such ethylene to the hydrogen constituent. The byproduct coke-oven gas has nearly the same flame temperature as the hydrogen, and the mixture of the ethylene therewith makes the temperature of the combined gases in excess of that obtained by the combustion of hydrogen alone and equal to at least 3200 C. Furthermore, the by product coke-oven gas is also readily obtainable as a source of gas for cutting'purposes, in steel mills. The gaseous mixture produces within the burning hydrogen a visible cone which enables the operator to adjust the proportions of the gases and of the combustion-supporting oxygen as may be necessary, as well as to apply the flame in the most advantageous manner to the work. 4

Both the volume of the flame and the heat units produced by the combustion of the mixture are greater than are produced by the combustion of hydrogen alone, but are lower than usually required for operating on heavy masses of metal and for cutting cast iron and steel and corroded, dirty and slaggy iron and steel. However, our gaseous mixture is capable of cutting with muchgreater rapidity than can be accomplished by gases having such higher carbon content.

Taking Koppers by-product coke-oven Specification of Letters Patent.

Application filed December 26, 1919.

Patented Jan. 24, 1922.

Serial No. 347,448.

gas as a type, the average analysis of the According to Richards on Metallurgical Calculations, published in 1908, and with the by-products coke-oven gas of approximately the analysis above set forth", the flame temperature produced by the combustion of the above described gaseous mixture will be at least 3200 C., and the variations in the percentages of the said gases will cause approxiinately the following variations in the net B. T. U. per cu. ft. of mixture and in the cubic feet of oxygen required for the combustion of a cubic foot of such mixture:

No. 1 mixture, 95% H. with 2%% eachof by-product coke-oven gas and ethylene; net B. T. U.s 334 cu. ft. of oxygen .575.

No. 2 mixture, 75% H. with 12%% each of by-product coke-oven gas and ethylene;

not B. T. U.s 493; cu. ft. of oxygen .875.

Having thus described our invention, what we claim is v 1. A gas for cutting, welding and heating purposes consisting of a mixture of by-product coke gas and ethylene with hydrogen in the proportions of from 2%% to 12% by volume of each of by-product coke gas and more than 25% of such combined gases tothe hydrogen, the by-product coke-oven gas and ethylene being present in the proportions to at least 2'% each in such mixture.

In testimony whereof, we hereunto'aflix our signatures.

JAMES R. ROSE. JOHN HARRIS.