阅读说明：本技术 一种焦炉炉门双层软密封结构 (Double-layer soft sealing structure of coke oven door ) 是由 刘洪春 耿宁 韩龙 赵殿辉 杨俊峰 于 2021-07-29 设计创作，主要内容包括：本发明涉及一种焦炉炉门双层软密封结构,沿炉门本体的周向,炉门内衬与炉门本体之间设内环柔性耐火密封件,刀边盒内设外环柔性耐火密封件；焦炉炉门关闭时,内环柔性耐火密封件与焦炉本体之间压紧实现内层密封,外环柔性耐火密封件与护炉铁件之间压紧实现外层密封。本发明通过双层软密封结构有效提高焦炉炉门区域的密封性能,抑制荒煤气外溢,实现节能降耗。(The invention relates to a double-layer soft sealing structure of a coke oven door, which is characterized in that an inner ring flexible fire-resistant sealing element is arranged between an inner lining of the oven door and the oven door body along the circumferential direction of the oven door body, and an outer ring flexible fire-resistant sealing element is arranged in a knife edge box; when the coke oven door is closed, the inner-ring flexible fire-resistant sealing piece and the coke oven body are compressed to realize inner-layer sealing, and the outer-ring flexible fire-resistant sealing piece and the oven protection iron piece are compressed to realize outer-layer sealing. According to the invention, the sealing performance of the coke oven door area is effectively improved through the double-layer soft sealing structure, the raw coke oven gas is inhibited from overflowing, and the energy conservation and consumption reduction are realized.)

1. A coke oven door double-layer soft sealing structure is characterized in that a coke oven door is arranged at an oven door frame at two ends of a coke oven carbonization chamber and consists of an oven door body, an oven door lining and an oven door knife edge, and an oven protection iron piece is arranged on the coke oven body at the periphery of the oven door frame; a groove is formed in the inner side of the furnace door body, and a furnace door lining is embedded in the groove; the periphery of the furnace door body is provided with a furnace door knife edge, and the furnace door knife edge consists of a knife edge box and a spring; the furnace door is characterized in that an inner ring flexible fire-resistant sealing element is arranged between a furnace door lining and a furnace door body along the circumferential direction of the furnace door body, and an outer ring flexible fire-resistant sealing element is arranged in a knife edge box; when the coke oven door is closed, the inner-ring flexible fire-resistant sealing piece and the coke oven body are compressed to realize inner-layer sealing, and the outer-ring flexible fire-resistant sealing piece and the oven protection iron piece are compressed to realize outer-layer sealing.

2. The double-layer soft sealing structure of the coke oven door of claim 1, wherein one side of the oven door lining close to the coke oven body extends out of the corresponding side of the oven door body, and the corresponding end of the inner ring flexible fire-resistant sealing element extends out of the oven door lining by 5-15 mm.

3. The double-layer soft sealing structure of the coke oven door of claim 1, wherein the cross-sectional width of the inner ring flexible fire-resistant sealing member is not less than 20 mm.

4. The double-layer soft sealing structure of the coke oven door of claim 1, wherein the outer ring flexible fire-resistant sealing element is filled in the knife edge box, one end of the outer ring flexible fire-resistant sealing element, which is close to the furnace protecting iron piece, extends to the outer side of the oven door body and is tightly propped against the oven door iron piece through a spring.

5. The double-layer soft sealing structure of the coke oven door of claim 1, wherein the inner ring flexible fire-resistant sealing element and the outer ring flexible fire-resistant sealing element are both made of zirconium-containing ceramic fibers.

6. The double-layer soft sealing structure of the coke oven door of claim 1, wherein the door lining is made of a castable, a refractory brick or a ceramic fiber module.

7. The double-layer soft sealing structure of the coke oven door of claim 1, which is suitable for a vertical coke oven or a heat recovery coke oven.

Technical Field

The invention relates to the technical field of coke ovens, in particular to a double-layer soft sealing structure of a coke oven door.

Background

The coke oven is basic thermal equipment in the coking industry, is used for providing important coke and coal gas for the smelting industry, and has the characteristics of high energy consumption, large pollution and the like. The coke oven belongs to a high-temperature kiln, and the large surface heat dissipation is one of the reasons of high energy consumption. With the continuous improvement of the national environmental protection requirement, the problems of energy conservation and consumption reduction of the coke oven are increasingly prominent.

The coke oven generally comprises main structures such as a regenerative chamber, an inclined channel, a combustion chamber, a carbonization chamber, an oven top and the like, and auxiliary structures such as other civil engineering foundations, an oven protection iron piece and the like. A carbonization chamber is arranged between every two adjacent combustion chambers, the carbonization chamber is a place for converting coal materials into coke in a coke oven, and the working temperature of the carbonization chamber is about 900-1100 ℃. The coke oven doors are arranged at two ends of the coking chamber and are used for preventing air from entering and raw coke oven gas from overflowing in the coking process and playing a certain role in heat insulation.

The coke oven door comprises a coke oven refractory brick masonry, an oven protection iron piece, an oven door body and an oven door lining brick. The furnace door lining brick is matched and built on the furnace door body, and after the furnace door of the coke furnace is closed, the furnace door lining brick extends into the interior of the carbonization chamber, so that the heat insulation effect is realized between the furnace door body and the red coke, the heat dissipation in the carbonization chamber is prevented, and the furnace door iron piece is protected. In the coking process, because coke pushing and discharging operations are required, the oven door of the coke oven is frequently opened and closed, the temperature of the lining brick of the oven door is changed between 300 ℃ and 1000 ℃ in the process, and the working environment has high requirement on the thermal shock resistance of the lining brick of the oven door.

At present, a large coke oven generally adopts a glaze-coated castable precast block as an oven door lining brick, and solves the problems of tar permeation, difficult tar removal and the like in the production process; however, the surface temperature of the coke oven door cannot be reduced, so that the heat loss of the oven end is large, and the phenomena of coke formation of the oven end and smoke and fire generation during coke pushing can occur in severe cases.

In addition, the furnace protection iron piece is arranged on the surface of the coke oven body (refractory brick masonry), the oven door body and the furnace protection iron piece are directly in rigid contact through hard-to-hard touch of the metal knife edge, and the quality of the sealing performance directly influences the service life of the refractory material and the metal product of the oven door area of the coke oven.

Disclosure of Invention

The invention provides a double-layer soft sealing structure of a coke oven door, which is characterized in that flexible sealing is adopted between a furnace door knife edge and a furnace protection iron piece, and an inner ring flexible fire-resistant sealing piece is arranged on the periphery of a furnace door lining to realize flexible sealing between the furnace door lining and a coke oven body; the sealing performance of the coke oven door area is effectively improved through the double-layer soft sealing structure, the raw coke oven gas is inhibited from overflowing, and energy conservation and consumption reduction are realized.

In order to achieve the purpose, the invention adopts the following technical scheme:

a coke oven door double-layer soft sealing structure is characterized in that a coke oven door is arranged at an oven door frame at two ends of a coke oven carbonization chamber and consists of an oven door body, an oven door lining and an oven door knife edge, and an oven protection iron piece is arranged on the coke oven body at the periphery of the oven door frame; a groove is formed in the inner side of the furnace door body, and a furnace door lining is embedded in the groove; the periphery of the furnace door body is provided with a furnace door knife edge, and the furnace door knife edge consists of a knife edge box and a spring; an inner ring flexible fire-resistant sealing element is arranged between the furnace door lining and the furnace door body along the circumferential direction of the furnace door body, and an outer ring flexible fire-resistant sealing element is arranged in the knife edge box; when the coke oven door is closed, the inner-ring flexible fire-resistant sealing piece and the coke oven body are compressed to realize inner-layer sealing, and the outer-ring flexible fire-resistant sealing piece and the oven protection iron piece are compressed to realize outer-layer sealing.

One side of the furnace door lining close to the coke furnace body extends out of the corresponding side of the furnace door body, the corresponding end of the inner ring flexible fire-resistant sealing piece extends out of the furnace door lining, and the extending amount is 5-15 mm.

The cross-sectional width of the inner ring flexible fire-resistant sealing element is not less than 20 mm.

The flexible fire-resistant sealing element of outer loop is filled in the sword limit box, and the flexible fire-resistant sealing element of outer loop is close to the one end of protecting the stove ironware and extends to the outside of furnace gate body to through the spring top tightly on the furnace gate ironware.

The inner ring flexible fire-resistant sealing element and the outer ring flexible fire-resistant sealing element are both made of ceramic fibers containing zirconium.

The furnace door lining is made of castable, refractory bricks or ceramic fiber modules.

The invention relates to a double-layer soft sealing structure of a coke oven door, which is suitable for a vertical coke oven or a heat recovery coke oven.

Compared with the prior art, the invention has the beneficial effects that:

1) except for adopting flexible sealing between the furnace door knife edge and the furnace protection iron piece, an inner ring flexible fire-resistant sealing piece is arranged on the periphery of the furnace door lining to realize flexible sealing between the furnace door lining and the coke oven body; the sealing performance of the coke oven door area is effectively improved through the double-layer soft sealing structure, the raw coke oven gas is inhibited from overflowing, and energy conservation and consumption reduction are realized;

2) the method is suitable for the newly built coke oven or the updating and the reconstruction of the old coke oven;

3) simple structure, convenient maintenance, being beneficial to reducing the production and operation cost and prolonging the service life of the refractory products and the metal products in the area of the coke oven door.

Drawings

FIG. 1 is a schematic view of a double-layer soft sealing structure of a coke oven door.

In the figure: 1. coke oven body 2, oven door body 3, oven door lining 4, knife edge box 5, spring 6, oven protection iron piece 7, inner ring flexible fire-resistant sealing piece 8, outer ring flexible fire-resistant sealing piece

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

as shown in figure 1, the coke oven door of the invention is a double-layer soft sealing structure, the coke oven door is arranged at the oven door frames at two ends of a coke oven carbonization chamber and consists of an oven door body 2, an oven door lining 3 and an oven door knife edge, and an oven protection iron piece 6 is arranged on the coke oven body 1 at the periphery of the oven door frame; a groove is formed in the inner side of the furnace door body 2, and a furnace door lining 3 is embedded in the groove; the periphery of the furnace door body 2 is provided with a furnace door knife edge, and the furnace door knife edge consists of a knife edge box 4 and a spring 5; an inner ring flexible fire-resistant sealing piece 7 is arranged between the furnace door lining 3 and the furnace door body 2 along the circumferential direction of the furnace door body 2, and an outer ring flexible fire-resistant sealing piece 8 is arranged in the knife edge box 4; when the coke oven door is closed, the inner-ring flexible fire-resistant sealing piece 7 is tightly pressed with the coke oven body 1 to realize inner-layer sealing, and the outer-ring flexible fire-resistant sealing piece 8 is tightly pressed with the oven protecting iron piece 6 to realize outer-layer sealing.

One side of the furnace door lining 3 close to the coke furnace body 1 extends out of the corresponding side of the furnace door body 1, the corresponding end of the inner ring flexible fireproof sealing piece 7 extends out of the furnace door lining 3, and the extending amount is 5-15 mm.

The cross-sectional width of the inner ring flexible refractory seal 7 is not less than 20 mm.

The outer ring flexible fire-resistant sealing element 8 is filled in the knife edge box 4, one end of the outer ring flexible fire-resistant sealing element 8, which is close to the furnace protecting iron piece 6, extends to the outer side of the furnace door body 2 and is tightly propped against the furnace door iron piece 6 through a spring 5.

The inner ring flexible fire-resistant sealing element 7 and the outer ring flexible fire-resistant sealing element 8 are both made of zirconium-containing ceramic fibers.

The furnace door lining 3 is made of casting materials, refractory bricks or ceramic fiber modules.

The invention relates to a double-layer soft sealing structure of a coke oven door, which is suitable for a vertical coke oven or a heat recovery coke oven.

The invention relates to a double-layer soft sealing structure of a coke oven door, wherein a coke oven body 1 adopts a refractory brick masonry, furnace protecting iron pieces 6 are attached to the peripheries of oven door frames at two ends of a carbonization chamber, a furnace door lining 3 is fixed on a furnace door body 2 through metal pieces, and the furnace door body 2 is a metal product; a flexible fire-resistant product is arranged on the outer edge of the furnace door lining 3 along the circumferential direction, and a flexible fire-resistant product is arranged on the knife edge of the furnace door, so that double-layer soft sealing is realized.

Compared with the traditional sealing mode that the metal knife edge is in hard contact with the furnace protection iron piece, the sealing method has the advantages that the inner ring flexible fire-resistant sealing element 7 is arranged on the outer side of the edge of the furnace door lining 3 to realize soft contact sealing with the refractory brick masonry of the coke furnace body 1, the outer ring flexible fire-resistant sealing element 8 is arranged in the knife edge box 4 to realize soft contact sealing with the furnace protection iron piece 6, the sealing performance of the coke furnace door area is improved through the double-layer soft sealing structure, in addition, the soft flexible fire-resistant product has compressibility and can play a certain buffering role, and the damage of the refractory brick masonry forming the coke furnace body 1 can be effectively avoided.

After the knife edge box 4 is filled with the outer ring flexible fireproof sealing element 8, the outer layer soft sealing of the coke oven door is realized by pressing through the spring 5 at the outer end of the knife edge box 4.

The inner ring flexible fire-resistant sealing element 7 and the outer ring flexible fire-resistant sealing element 8 can be replaced conveniently.

The double-layer soft sealing structure of the coke oven door is suitable for the traditional vertical coke oven and the heat recovery coke oven.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.