SU1553811A1 - Fancy brick and lining of furnace with internal recuperation - Google Patents

Abstract

The invention can be used in heating and heat-treatment furnaces of the metallurgical and engineering industries. The purpose of the invention is to increase the strength of the lining and its service life. The shaped brick for laying the inner perforated layer has on both sides — on the upper 2 and lower 3 bases — alternating protrusions and depressions. The protrusions of the upper base 2 correspond to the depressions of the lower base 3 and vice versa. The walls 17 of all the depressions (projections) have a zigzag shape. In the depressions of the upper base along the zigzag walls 17, grooves 18 are made, repeating the shape of the zigzag. When bricks are combined in the masonry, the protrusions and depressions form a lock preventing the bricks from moving in the direction perpendicular to the wall. The lining contains an outer gas-tight layer and an inner permeable layer made of shaped bricks, which when docked with each other form a perforation of the furnace wall. The outer and inner layers are separated by a smoke collector. Binding bricks are installed between the shaped bricks, which are dispersed throughout the masonry: vertically through three rows, horizontally - through two bricks, and in the outer layer are embedded with the end. During operation of the furnace, the combustion products from the working chamber are sucked through the perforation channels and directed along the perforated layer, loading it, and then removed through the collector from the furnace. 2 sec. f-ly, 3 ill.

Description

The invention relates to heating devices of metallurgical heat engineering and can be used in heating and thermal furnaces of the plants of the metallurgical and machine-building industry.

The purpose of the invention is to increase the strength of the lining and its service life.

FIG. 1 presents the proposed shaped brick; in fig. 2 is a view A of FIG. one; in fig. 3 - furnace lining, general view.

The shaped brick for laying the inner perforated layer has on both sides — on the upper 2 and lower 3 bases — alternating protrusions and depressions.

On the upper base 2 in the center there is a depression A and symmetrically on both sides of it - depression 5 and

6. Between the depressed k-b are the projections 7, and on both sides of the brick

1 along the hollows 5 and 6 are the protrusions 8 and 9, equal to half the protrusions

7. The protrusions 7 of the upper base 2 correspond to the depressions 10 and 11 of the lower base 3, and the projections 8 and 9 of the upper base 2 correspond to the depressions 12 and 13 of the lower base 3. The depressions L-6 of the upper base 2 correspond to the projections of the lower base 3. Walls 17 of all the troughs (protrusions) have a zigzag shape, and in each trough the opposite walls are symmetrical about its axis.

In the depressions -6 of the upper base

2, along the zigzag walls 17, grooves 18 are made, repeating the shape of the zigzag.

The shape of each protrusion on the upper base 2 of the brick 1 corresponds to the shape of the depression on the lower base 3, and when the brickwork 1 is combined with each other in the masonry, the projections and depressions form a lock preventing the bricks from moving in the direction perpendicular to the wall.

The lining of the walls of the furnace with internal recovery contains an outer gas-tight layer 19 made of refractory and heat-insulating materials, and an inner permeable layer 20 made of shaped refractory bricks 1 that, when joined together, form a perforation of the furnace wall “Outer 19 and inner 20 layers smoke collector 21. Shaped bricks 1 are mounted on each other with bases 2 and 3 with displacement of the overlying row and n with depressions of the underlying t.

To increase the strength of the lining between the shaped bricks 1, the vertical bricks 22 are installed in vertical rows, which are dispersed in the laying with vertical arrangement through three rows (Fig. 3), and horizontally - through two bricks. The bonding bricks 22 are embedded at one end 23 in the outer layer 19.

and part 2k of each binder brick, located in the perforated layer 20, has the same configuration as the shaped brick 1. To ensure free product release

0 combustion from the working chamber of the furnace on the surface of each connecting brick, located in the smoke collector, a recess 25 is made, the level of which coincides with the level

5 grooves 18.

All perforated bricks

20 are installed without mortar, and the combination of protrusions and depressions of adjacent rows ensures the fixation of bricks in the direction perpendicular to the wall.

Perforation channels are formed when the zigzag grooves 18 overlap and therefore also have a zigzag shape, which contributes to a significant turbulization of the smoke flux and an increase in the heat-receiving surface of the inner lining layer 20.

During operation of the furnace, the combustion products from the working chamber are sucked through the perforation channels and directed along the perforated layer 20, heating it, and then through the collector

21 removed from the oven. The effectiveness of the design is due to the fact that for lining the furnace with internal recovery brick is used, which provides for laying high strength of the inner perforated layer and rigid connection

0 layers, while simplifying installation techniques, reducing the time and cost of repairs.

five

Claims (2)

1. Shaped brick, made with through grooves, characterized in that, for the purpose of to increase the strength of the lining and its service life, it is made with alternating protrusions and depressions forming a zigzag-shaped cross-section of the grooves on the upper and lower bases, with the protrusions of the upper base corresponding to the base. troughs lower 2. The lining of the furnace with internal recovery, consisting of an outer gastight layer, an inner perforated layer of shaped bricks and a smoke collector located between these layers, with vertical bridges arranged across it in vertical rows chi, embedded at one end in the outer layer, and at the other between the shaped bricks, characterized in that, in order to increase the strength of the lining and service life, the shaped bricks are installed in vertical rows by bases with alignment of the protrusions of the overlying row with underlying depressions, and the connecting bricks are distributed along the laying vertically through three rows, and horizontally through two bricks, while the connecting brick in the perforated layer has the same configuration as the shaped one, and its part located in the smoke collector e is formed with a recess. Type A yy to Wych 2.3