RU1806163C - Heating wall of coking chamber - Google Patents

Abstract

SUMMARY OF THE INVENTION: wall blocks are provided with embedded elements. The embedded elements are made of a material with a lower coefficient of linear expansion than the material of the wall blocks. Embedded elements are mounted on the surface of the blocks facing the coking chamber. Embedded elements are made of non-heat-resistant material, removable. Wall blocks are equipped with additional embedded elements. 4 s.p. f-ly, 4 ill.

Description

The invention relates to the coke industry, in particular to the construction of heating walls of coking chambers of horizontal coke ovens.

The purpose of the invention is to increase the service life of the heating wall at the expense of. reduce cracking.

This goal is achieved in that in the heating wall of the coke oven / coke chamber, including wall blocks with heating channels separated by vertical jumpers, the wall blocks are equipped with embedded elements made of material with a lower coefficient of linear expansion than the material of the wall blocks and installed on the surface of the blocks facing the inside of the coking chamber.

Additional differences are the installation of embedded elements opposite the jumpers between the heating channels, the execution of elements from non-heat-resistant material, the supply of wall

blocks with additional embedded elements located at an angle to the heating channels, and the implementation of embedded elements removable.

The supply of wall blocks of the heating wall with embedded elements made of a material with a lower coefficient of linear expansion than that of the material of the wall blocks mounted on the surface of the blocks facing the coking chamber provides an increase in service life by reducing cracking during temperature changes. The greatest temperature differences occur between the surfaces of the wall blocks facing the coking chamber (minimum temperatures) and inside the verticals (maximum temperatures), as well as between different areas in contact with the coal charge due to the uneven heat transfer. This leads to uneven thermal expansion of the material (concrete) in different areas, leading to an increase

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stresses and cracks in weak points of the block. Subsequently, these cracks develop into perforated ones and eventually block the unit. This reduces the life of the heating wall of the coking chamber. The presence of embedded elements leads to a decrease in thermal stresses, since it allows mutual movement of the block material along and inside the embedded elements, since embedded elements are made of material with a lower coefficient of linear expansion than the material of wall blocks. There are no conditions for cracking.

The installation of embedded elements opposite the jumpers between the heating channels makes it possible to better compensate for temperature stresses, due to the greater depth of the embedded elements, while the strength of the block is not impaired even with significant development of cracks deep into the jumpers, cracks do not develop in the direction of the heating vertical and Do not break the integrity of the wall.

The implementation of embedded elements from non-heat-resistant materials (for example, from pre-printed cardboard, plastic, wood strips, etc.) leads to their burnout at high temperatures. The resulting groove is caked, but all temperature deformations of the block material are compensated by the graphite layer deposited in this groove. This prevents the occurrence and development of cracks.

The supply of wall blocks with additional embedded elements located at an angle to the heating channels makes it possible to improve the compensation of temperature extensions in the respective directions, which is especially important for wall blocks located at the ends of the heating walls.

The implementation of removable embedded elements ensures their repeated use in the manufacture of blocks and good voltage compensation due to the presence of grooves that occur when the removable element is removed.

Figure 1 shows a general view of a heating wall of a coking chamber; figure 2 is a view along arrow a in figure 1; in Fig.Z is a fragment of the wall with a removable element; Fig. 4 is an embodiment of embedded elements made of combustible material.

The heating wall of the coking chamber includes wall blocks 1 (FIGS. 1, 2) with heating channels 2 separated by vertical jumpers 3. Wall blocks 1 are provided with elements 4 made of a material with a lower coefficient of linear expansion,

than the material of the wall blocks mounted on the surface 5 of the blocks 1 facing the inside of the coking chamber. The embedded elements 4 can be installed opposite the jumpers 3 (Fig.Z) between

heating channels 2 are also made of non-heat-resistant material.

Wall blocks of the heating wall can be equipped with additional embedded elements 6,

5 located at an angle to the heating channels 2, as well as the embedded elements 4 are made removable, for example, in the form of metal strips or wire stretched over the surface of the blocks.

0 The heating wall works as follows, In the process of burning fuel gas in the heating channels of 2 wall blocks 1, they are heated to operating temperatures reaching 10005 1100 ° C, on the surface 5 of the block. When the coking chambers are loaded with a coal charge or when the chambers are opened, the surface of 5 wall blocks sharply cools to a temperature of 700-750 ° C, and when the technological mode of coking is violated below these temperatures. When this happens

surface temperature deformation. 5 block facing inward to the coking chamber. and tensile

5 voltage With such a temperature difference (350-400 ° C), cracks on surface 5 are inevitable, however, the embedded elements 4 and 6 compensate for these stresses, since they can be realized by temperature deformations on the surface 5 of block 1. In the event of a crack development under the embedded elements 4, installed opposite the jumpers 3, the destruction of block 1 occurs, not

5 leading to its penetration into the heating channel 2, while gases from the coking chamber do not enter the heating channels.

Perform Mortgage Elements 4 of

0 non-heat-resistant material leads to the formation of a corresponding groove on the surface of the block, providing voltage compensation.

In wall blocks located with

5 ends of the coking chamber, it is advisable to install additional embedded elements located at an angle to the co-heating channels, since it is in this direction that the highest temperature stresses will act.

With repeated use of embedded elements, it is advisable to make them removable. When they are removed from the wall blocks of the heating wall, the necessary groove is obtained, which is subsequently partially embossed and acts as a compensating element.

This embodiment of the heating wall leads to the fact that the embedded elements compensate for temperature deformations of cracks in the most dangerous places in terms of tightness and strength of the heating wall, which ensures an increase in its service life: The use of the proposed heating wall in the design of coke ovens will allow prototype to reduce crack formation and destruction of the walls by at least half, which will increase the service life of block coke oven batteries by 40-50%

Claims (5)

SUMMARY OF THE INVENTION 1. A heating wall of a cooker chamber is 25 including wall blocks with 0 5 0 5 heating channels separated by vertical jumpers, characterized in that, in order to increase service life by reducing crack formation, wall blocks are equipped with embedded elements made of material with a lower coefficient of linear expansion than the material of wall blocks and installed on the surface of the blocks facing the coking chamber. 2. The pylon according to claim 1, with respect to the fact that the embedded elements are installed opposite the jumpers between the heating channels. 3. A wall according to claim 1, characterized in that the embedded elements are made of a non-heat-resistant material. 4. A wall according to claims 1 to 3, characterized in that the wall blocks are provided with additional embedded elements located at an angle to the heating channels. 5. The pylon according to claim 1, with the fact that the embedded elements are removable. FIG. 1 .Fig. Z. Fig-4. Compiled by S.-Veretelnik Editor S. Kulakova Tehred M. Morgenthal Corrector M. Keretsman Order 964Mintage VNIIIPI of the State Committee for Inventions and Discover at the USSR State Committee for Science and Technology 113035, Moscow, Zh-35, Rauska nab., 4/5  3 ™ Production and Publishing Plant Patent, Uzhhorod, 101 Gagarin St.