US1083496A - Gas-burner for blast-furnace gases. - Google Patents

Description

' H. KEIBEL. GAS BURNER FOR BLAST FURNACE GASES. APPLICATION FILED 3EPT. 26,1911.

1,083,496, Patented Jan. 6, 1914.

HERMANN KEIBEL, OF Mfi'LHEIlVI-ON-THE-RUHR, GERMANY, ASSIG-NOR TO THE FIRM OF DEUTSCI-I-LUXEMBURGISCHE BERGWEBKS- UNI) H'UTTEN-AKTIENGESELL- SCI-IAFT, 0F 1VITJ'LHEI1VI-ON-THE-RUHR, GERMANY.

GAS-BURNER FOR BLAST-FURNACE GASES.

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Specification of Letters Patent.

Patented Jan. 6, 191

Application filed September 26, 1911. Serial No. 651,324.

To all whom it may concern Be it known that I, HERMANN KEIBEL, a citizen of the German Empire, residing in Millheinroii-the-Ruhr, Germany, have invented certain new and useful Improvements in Gas Burners for Blast Furnace Gases, of which the following is a specification.

This invention relates to an improved burner for burning blast furnace gases for drying and heating purposes and is intended to provide for complete combustion of such gases and full utilization of the calorific value thereof for drying and heating purposes, especially for drying molds and heating drying chambers.

The invention is illustrated by way of example in the accompanying drawing, in which,-

Figure l is a vertical section through a burner embodying the invention; Fig. 2 is a plan View of the upper distributing plate; Fig. 3 is a horizontal section of one modification of an intermediate ring; Fig. 4 is a plan of a second modification of an intermediate ring, showing the bent teeth integral therewith; Fig. 5 shows a section of Fig. 4; and Fig. 6 is a plan of a third modification of an intermediate ring, having a greater number of teeth than that shown in Fig. 4.

Complete combustion of the blast gases in burners is rendered a diflicult matter owing to the fact that the burners must be made of relatively large dimensions because the calorific value of blast gases compared with other gases is relatively low so that it becomes necessary to burn large quantities of the gas.

The object of the invention is attained owing to the fact that prior to its combustion the gas is divided into separate streams which are then given an eddying movement. By breaking up the gas into separate streams its mixture with the combustion air is facilitated and owing to the fact that the separate streams of gas experience an eddying movement this mixture with the combustion air is uniform and intimate.

The burner employed in carrying the contemplated method into practice comprises oppositely located discharge apertures on the periphery of its gas supply pipe which break up the gas into separate currents; above and below the admission apertures a series of plates are arranged which plates are of such a form that the currents of gas flowing over them assume an eddying move ment. With this object the peripheries of the plates are serrated and the teeth thus formed bent out of the plane of the plate to one or both sides so that the teeth lie somewhat in the manner of the cross-set teeth of a saw blade. The gas supply pipe is closed at its upper end and the plates comprise a central aperture so that the gas is able to flow through the central openings and between the several plates toward the openings in the periphery of the gas supply pipe. This pipe is composed of separate rings between which the plates are arranged. The eddying movement imparted to the currents of gas striking against the distributing plates owing to the bending of their teeth can be still further increased by suitably forming the discharge apertures on the gas pipe itself, as shown in Figs. 4:, 5, and 6.

The distributing plates 2, 3 and 4: project into the gas supply pipe 1. Externally these plates are provided on their peripheries with teeth bent out of the plane of the plate and comprise central apertures for the passage of the gas. These apertures increase in width from the top downward. The uppermost distributing plate 5 is not formed with an opening but closes the gas supply pipe at its extremity as shown. Owing to the fact that the distributing plates 2, 3 and 4 project into the gas supply pipe 1, the portions of this pipe located between the plates 2, 3, at and 5 constitute rings 6, 7 and 8 which are connected with the distributing plates and the lower parts of the gas supply pipe 1 by means of pins 12 or in any other suitable manner. These intermediate rings 6, 7 and 8 are provided with lat-' eral apertures 9, 10 and 11 through which the gas flows out in separate currents. Preferably these apertures are disposed in staggered relation. By suitably selecting the apertures in the distributing plates 2, 3 and 4t and the size of the apertures 9, 10 and 11 it is possible to regulate the quantity of the gas discharged and consequently the form and nature of the flame. The currents of gas issuing from the several apertures impin ge on the teeth of the distributing plates 3, 4t and 5 are given an eddying movement and thereby uniformly and intimately mixed with the combustion. air. In some cases it has proved to be advantageous to impart a specially vigorous eddying movement to the gas. This result can be attained by providing the discharge apertures of the gas supply pipe with projections which impart an eddying movement to the gas as it issues. A simple method of attaining the desired result isnot to completely remove the material in forming the discharge apertures 9, 10 and 11 in the intermediate rings 6, 7 and 8 but merely to cut and bend it over. The construction of such a ring is illustrated in Figs. 4 and 5 in plan and in section respectively. If it be desired to impart a still greater eddying movement a number of such rings can be inserted one within the other as shown for example in Fig. 6.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that What I claim is:

A burner, comprising a gas supply pipe made up of sections each having lateral gas exit openings, annular plates secured between said sections having horizontal and inclined portions exterior to the pipe constructed and arranged to break up the gas into separate streams and impart an eddying motion thereto.

In testimony whereof I afiix my signature in presence of two witnesses.

HERMANN KEIBEL.

\Vitnesses:

MARGARET KNEPPERS, EMRIc LownNi-mrz.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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