US1508918A - Incinerator furnace - Google Patents

Description

Sept. 16, 1924. 1,508,918

J. A. BURNETT INCINERATOR FURNACE Filed Dec. 14, 1922 4 4 z Patented Sept. 16, 1924.

LINE? tscaaie INCINERATOR FURNACE.

Application filed December 14, 1922. Serial No. 606,903.

to obviate the excessive loss of time and to reduce the expense in renewing the refractory linings of the charging openings.

The principal feature of the invention consists in supporting the linings of the charging openings independently of the roof structure, thereby enabling the removal of the lining from the inside of the furnace without the necessity of supporting the roof structure.

A further important feature consists in the novel method of ventilating the arch.

In the drawings, Figure 1 is a vertical sectional view through a furnace showing the improved lining support.

Figure 2 is a fragmentary top plan View partly in section.

In the regular forms of incinerating furnaces when the linings of the charging openings become worn by excessive abrasion, it is necessary to shut down a furnace for a very considerable period and build an expensive internal structure to support the roof bricks to prevent rupture while th lining is being removed.

In the construction herein shown the roof arch 1 extends upwardly to a hollow casting 2 which extends transversely of the furnace being supported at the ends by suitable flanges 3 which are rigidly secured to the steel cross members f carried by the buck stays 5.

The casting 2 is formed with the front and back sides converging toward the bottom and the sides are supported by transverse webs 6.

The lower side of the casting is open and in it are secured the lining bricks 7 which are keyed with a central brick 8.

From each end of the casting 2 are extended forwardly the tubular supports 9 which are secured to the casting and extend into the front wall 10 where they communicate with air openings 11.

The lining bricks 12 of the sides of the charging opening 13 are arched forwardly and downwardly and rest upon the front wall 10 and are supported by the tube supports 9 and being butted against the 'trans-' verse casting 2 they are rigidlysupported independently of the main arch of the roof of the furnace. Lining bricks 12 extend between the arched bricks 12 and cover the front face of the casting 2 and the front wall of the opening 13 is formed by the lining bricks 10 of the front wall 10.

The roof arch 1 is spaced from the upper arch or top structure 1 1 and vent openings 15 extend upwardly to the top. I

Openings 16 are formed in the back wall of the casting 2. A circulation of air is thus established through the openings 11, tube supports 9, casting 2, openings 16 and vents 15 and the abnormal transference of heat outwardly is thus eliminated.

When the linings 12 become worn by the abrasion of the materials passing therethrough to such an extent that they require renewal it is not necessary that the main arch be disturbed as it is always supported by the transverse casting 2. It is merely necessary to clear out the lining bricks and set in new forward arches and back linings. This can easily be done over a week end so that the furnace need not be out of working order for an extended period for repairs, as is customary with this class of furnace at the present time. 7

What I claim as my invention is 1. An incinerator furnace or'the like having an arched roof structurewith charging openings therein, a rigid support for the roof arch, and refractory linings for the chargingiopenings carried by said support independent of the roof arch. p

2. An incinerator furnace or the like having the roof arched upwardly from the back and from the front, a transverse supporting member arranged between and independently supporting the forward and backward arches, refractory linings protecting the supporting member, and means for carrying the supporting member independent of the arches. 7

8. In an incinerator furnace or the like, the combination with the roof arch, of a hollow casting having convergent walls arranged transversely at the forward side of the roof arch and spaced from the front Wall, and a refractory lining arching forwardly from said casting to the front wall and arranged to form a charging opening.

l. In an incinerator furnace, or the like, the combination with the front wall and roof arch, of a hollow casting having convergent front and back sides adapted to hold fire brick facings in the open under side, said casting supporting the roof arch, tubular supports connected with the ends of said casting, fire brick linings arching from the front wall back to the hollow casting and surrounding said tube support-s and having a charging opening therein, and transverse linings between the front wall of the casting and the charging opening.

5. An incinerator furnace or the like having an arched roof formed With a space above the arched roof, vent openings leading upwardly to the top of the furnace struc ture, a transverse hollow casting rigidly supported from the ends and forming the forward side of the arch, said casting having openings communicating with the space above the refractory roof of the furnace, afront Wall tubular supports connected with the ends of said hollow casting and extending forwardly to the front wall, openings connnunicating through the wall with the tubular supports, and refractory linings charging openings supported by said tubular supports and'casting.

JOSEPH ALFRED BURNETT.

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