Coke dry quenching furnace pre-storage area charging port structure

Abstract

The invention relates to a charging hole structure of a pre-storage area of a dry quenching furnace. The charging hole structure comprises a charging hole masonry, a charging hole furnace shell and a water seal tank, the pre-storage area charging port is divided into a charging port top area and a charging port lower area, a charging port masonry is composed of inner-layer lining bricks and outer-layer lining bricks, the inner-layer lining bricks corresponding to the charging port top area are the inner-layer lining bricks of the top area, and the inner-layer lining bricks corresponding to the charging port lower area are the inner-layer lining bricks of the lower area; the inner-layer lining bricks of the top area, the inner-layer lining bricks of the lower area and the outer-layer lining bricks are made of different refractory materials; the periphery of the top of the pre-storage area charging opening body is provided with a downward-concave structure, and the water seal tank is located at the downward-concave structure and fixedly connected with the charging opening furnace shell. According to the invention, the service lives of the charging hole masonry and the water seal tank can be prolonged, water gas reaction in the dry quenching furnace is avoided, and the production safety and stability of the dry quenching furnace are improved.

Description

Technical Field

[0001] The invention relates to the technical field of dry coke quenching, and in particular to a charging port structure of a pre-storage area of ​​a dry coke quenching oven. Background Art

[0002] Coke dry quenching is a process that uses inert gas as circulating gas to exchange heat with red-hot coke in a coke dry quenching oven and then cool the red coke. The main body of the coke dry quenching oven is equipped with a pre-storage area, an annular air duct, a ramp and a cooling area from top to bottom. The red-hot coke is loaded into the coke dry quenching oven from the charging port of the pre-storage area, and is discharged from the discharge device at the bottom after being cooled by inert gas in the cooling area.

[0003] The charging port of the pre-storage area is responsible for loading red coke, and a water seal groove is usually provided on its periphery, which cooperates with the dry quenching coke oven cover to seal the charging port. During the dry quenching coke production process, the charging port of the pre-storage area undergoes thousands of red coke loading processes, and is subjected to rapid cooling and heating in this process. Therefore, the lining bricks at the charging port of the pre-storage area are extremely easy to be damaged, which reduces the service life of the dry quenching coke oven. The water seal groove is used as a sealing device at the charging port of the pre-storage area. During the operation of the dry quenching coke oven, the water seal groove causes stress concentration on the side wall of the water seal groove due to the large temperature difference between the inside and outside of the water seal groove, which can also cause damage to the side wall of the water seal groove and leak into the dry quenching coke oven. This not only corrodes the lining bricks at the charging port of the pre-storage area, but also causes a water-gas reaction in the dry quenching coke oven, which directly affects the normal and safe operation of the dry quenching coke oven.

[0004] The Chinese patent application with publication number CN106701113A discloses "a water seal lining brick for a dry coke quenching oven and a masonry method", which uses an L-shaped integrated lining brick to wrap the water seal trough to prevent the water seal trough from directly contacting the high-temperature flue gas and reduce the temperature difference between the inside and outside of the water seal trough. However, the water seal lining brick has a special structure, is difficult to manufacture, and has a low yield rate; and during the production process of the dry coke quenching oven, the lining brick is easy to be damaged due to its low strength. Once the facade of the lining brick is damaged, the above problems will still occur, and the normal and safe operation of the dry coke quenching oven cannot be fully guaranteed. Summary of the invention

[0005] The present invention provides a charging port structure of a pre-storage area of ​​a dry coke quenching oven, wherein the charging port of the pre-storage area is divided into a charging port top area and a charging port lower area, the masonry of the two areas are composed of an inner lining brick and an outer lining brick, and the masonry of different areas adopts refractory materials of different materials; at the same time, the position of a water seal groove is adjusted and the connection mode between the water seal groove and the charging port furnace shell is changed, so as to achieve the purpose of extending the service life of the charging port masonry and the water seal groove, avoiding water-gas reaction in the dry coke quenching oven and improving the production safety and stability of the dry coke quenching oven.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A charging port structure of a pre-storage area of ​​a dry quenching coke oven comprises a charging port masonry, a charging port furnace shell and a water seal groove; the charging port body of the pre-storage area is composed of the charging port masonry, the charging port furnace shell is arranged outside the charging port masonry, and the water seal groove is arranged on the top periphery of the charging port of the pre-storage area; the charging port of the pre-storage area is divided into a charging port top area and a charging port lower area, the charging port masonry is composed of an inner lining brick and an outer lining brick, wherein the inner lining brick corresponding to the charging port top area is the inner lining brick in the top area, and the inner lining brick corresponding to the charging port lower area is the inner lining brick in the lower area; the inner lining brick in the top area, the inner lining brick in the lower area and the outer lining brick are made of different refractory materials; a concave structure is arranged on the top periphery of the charging port body of the pre-storage area, the charging port furnace shell has a matching shape, the water seal groove is seated at the concave structure and is fixedly connected to the charging port furnace shell, and the top surface of the water seal groove is higher than the top surface of the charging port of the pre-storage area.

[0008] The part of the charging port furnace shell located at the top of the charging port of the pre-storage area is the top furnace shell, and the bottom of the water seal groove is fixedly connected to the top furnace shell at the concave structure; the top furnace shell is inclined outward and downward, that is, it has a slope structure; a plurality of reflux holes are opened at the bottom of the inner wall of the water seal groove.

[0009] The height difference of the slope structure is 5 to 20 mm; the reflux holes are evenly spaced along the circumferential direction on the inner wall of the water seal groove.

[0010] The top area of ​​the charging port includes the area of ​​3 to 10 layers of masonry downward from the top surface of the pre-storage area charging port, and the remaining area of ​​the pre-storage area charging port is the lower area of ​​the charging port.

[0011] The side of the inner lining brick in the top area facing the center of the dry quenching coke oven is composed of an upper vertical surface and a lower inclined surface, and the lower inclined surface is inclined from top to bottom toward the inner side of the inner lining brick in the top area; two adjacent inner lining bricks in the top area are bite-connected by a brick groove and brick tongue structure.

[0012] The inner lining bricks in the top area are built with high-strength and high-wear-resistant refractory materials, and the high-strength and high-wear-resistant refractory materials are silicon nitride combined silicon carbide bricks, mullite silicon carbide bricks or wear-resistant castable blocks.

[0013] The inner lining bricks in the lower area are laid with clay bricks or mullite bricks.

[0014] The outer lining bricks are built with low thermal conductivity refractory materials, and the low thermal conductivity refractory materials are insulating bricks or insulating castables.

[0015] The height of the concave structure is 50 to 300 mm.

[0016] The joint between the inner lining bricks in the top area and the top furnace shell is cast with refractory heat-insulating castables, and an expansion space is provided between the refractory heat-insulating castables and the top furnace shell and filled with ceramic fiber products.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1) The charging port of the pre-storage area is divided into different areas, and different areas are built with refractory materials of different materials; the inner lining bricks in the top area with the highest frequency of direct contact with the loaded red coke are built with high-strength and high-wear-resistant refractory materials, which is conducive to extending the service life of the charging port masonry, reducing the number of overhauls of the dry quenching coke oven, and improving the working efficiency of the dry quenching coke oven;

[0019] 2) The inner lining bricks in the top area close to the center of the CDQ oven adopt the structure of "upper vertical surface + lower inclined surface" to ensure that the loaded red coke only contacts the inner lining bricks in the top area, and the inner lining bricks in the top area are connected by a brick groove and brick tongue structure to further improve the structural strength and overall structural stability of the pre-storage area charging port;

[0020] 3) The inner lining bricks in the lower area are built with relatively cheap refractory materials with relatively low wear resistance. This is because this part does not come into direct contact with the loaded red coke. Under the premise of ensuring the service life of the masonry, it is beneficial to reduce the construction cost of the dry quenching coke oven;

[0021] 4) The water seal tank is arranged at the concave structure on the top periphery of the charging port in the pre-storage area, so that the water seal tank is far away from the loading of red coke, reducing the risk of damage to the water seal tank, which is conducive to extending the service life of the water seal tank;

[0022] 5) The top furnace shell adopts a slope design, and a reflux hole is opened on the inner side of the water seal groove to prevent water and rainwater in the water seal groove from entering the CDQ oven and causing water-gas reaction, thereby improving the safety and stability of CDQ oven production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a charging port structure of a pre-storage area of ​​a dry quenching coke oven according to the present invention.

[0024] Figure 2 It is a top view of the inner layer lining bricks in the top area of ​​the present invention.

[0025] Figure 3 yes Figure 2 AA section view in.

[0026] Figure: 11. Inner lining bricks in the top area 12. Inner lining bricks in the lower area 13. Outer lining bricks 2. Charging port furnace shell 21. Top furnace shell 3. Water seal groove 31. Reflux hole DETAILED DESCRIPTION

[0027] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0028] like Figure 1As shown, a charging port structure of a pre-storage area of ​​a dry quenching coke oven according to the present invention comprises a charging port masonry, a charging port furnace shell 2 and a water seal groove 3; the charging port body of the pre-storage area is composed of the charging port masonry, the charging port furnace shell 2 is arranged outside the charging port masonry, and the water seal groove 3 is arranged on the top periphery of the charging port of the pre-storage area; the charging port of the pre-storage area is divided into a charging port top area and a charging port lower area, and the charging port masonry is composed of an inner lining brick and an outer lining brick 13, wherein the inner lining brick corresponding to the charging port top area The inner lining bricks 11 in the top area are the inner lining bricks in the lower area of ​​the charging port, and the inner lining bricks in the lower area corresponding to the charging port are the inner lining bricks 12 in the lower area; the inner lining bricks 11 in the top area, the inner lining bricks 12 in the lower area and the outer lining bricks 13 are made of different refractory materials; a concave structure is arranged on the top periphery of the charging port body of the pre-storage area, and the charging port furnace shell 2 has a matching shape, the water seal groove 3 is seated on the concave structure and is fixedly connected to the charging port furnace shell 2, and the top surface of the water seal groove 3 is higher than the top surface of the charging port of the pre-storage area.

[0029] The part of the charging port furnace shell 2 at the top of the charging port of the pre-storage area is the top furnace shell 21, and the bottom of the water seal groove 3 is fixedly connected to the top furnace shell 21 at the concave structure; the top furnace shell 21 is inclined outward and downward, that is, it has a slope structure; a plurality of reflux holes 31 are opened at the bottom of the inner wall of the water seal groove 3.

[0030] The height difference of the slope structure is 5-20 mm; the reflow holes 31 are evenly spaced along the circumferential direction on the inner wall of the water seal groove 3 .

[0031] The top area of ​​the charging port includes the area of ​​3 to 10 layers of masonry downward from the top surface of the pre-storage area charging port, and the remaining area of ​​the pre-storage area charging port is the lower area of ​​the charging port.

[0032] The side of the inner lining brick 11 in the top area facing the center of the dry quenching coke oven is composed of an upper vertical surface and a lower inclined surface, and the lower inclined surface is inclined from top to bottom toward the inner side of the inner lining brick in the top area; two adjacent inner lining bricks 11 in the top area are engaged and connected by a brick groove and brick tongue structure.

[0033] The inner lining bricks 11 in the top area are built with high-strength and high-wear-resistant refractory materials, and the high-strength and high-wear-resistant refractory materials are silicon nitride combined silicon carbide bricks, mullite silicon carbide bricks or wear-resistant castable blocks.

[0034] The inner lining bricks 12 in the lower area are constructed by clay bricks or mullite bricks.

[0035] The outer lining bricks 13 are built with low thermal conductivity refractory materials, and the low thermal conductivity refractory materials are insulating bricks or insulating castables.

[0036] The height of the concave structure is 50 to 300 mm.

[0037] The connection between the inner lining brick 11 in the top area and the top furnace shell 21 is cast with refractory heat-insulating castable material, and an expansion space is provided between the refractory heat-insulating castable material and the top furnace shell 21 and filled with ceramic fiber products.

[0038] The charging port structure of the dry coke quenching pre-storage area of ​​the present invention comprises a charging port masonry, a charging port furnace shell 2 and a water seal groove 3. The charging port masonry is divided into a charging port top area and a charging port bottom area, and the charging port masonry in the two areas is respectively built of inner lining bricks and outer lining bricks 13; according to the different locations of the charging port masonry, different refractory materials (including refractory bricks, refractory heat-insulating castables, ceramic fiber products, etc.) are used for masonry.

[0039] The top surface of the top furnace shell 21 near the center of the dry quenching coke oven is a sloped surface with high inside and low outside, and the side away from the center of the dry quenching coke oven has a concave surface that matches the concave structure of the charging port masonry; the water seal groove 3 is arranged at the concave structure and is integrally connected to the top furnace shell 21.

[0040] The inner lining bricks 11 in the top area are built with high-strength and high-wear-resistant materials, including but not limited to silicon nitride bonded silicon carbide bricks, mullite silicon carbide bricks, wear-resistant castable blocks, etc. The inner lining bricks 11 in the top area near the center of the dry quenching coke oven adopt the structure of "upper facade + lower slope", and the two adjacent inner lining bricks 11 in the top area are connected by a brick groove and brick tongue structure.

[0041] The inner lining bricks 12 in the lower area are built with refractory materials that are relatively cheap and have relatively low wear resistance, including but not limited to clay bricks, mullite bricks, etc.

[0042] The outer lining bricks 13 are constructed of refractory materials with low thermal conductivity, including but not limited to insulating bricks, insulating castables, and the like.

[0043] In order to more intuitively embody the present invention, the embodiments of the present invention are further described in conjunction with examples. The following examples are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technical solution that can be obviously obtained by a person skilled in the art within the technical scope disclosed in the present invention, including simple changes or equivalent replacements, is within the protection scope of the present invention.

[0044] [Example]

[0045] like Figure 1-Figure 3As shown, in this embodiment, the charging port structure of the pre-storage area of ​​the dry quenching coke oven is composed of a charging port masonry, a charging port furnace shell 2 and a water seal groove 3. The charging port masonry is composed of two parts: the top charging port masonry (composed of the top 3 layers of masonry) of the pre-storage area (the top cone section of the dry quenching coke oven) and the lower charging port masonry (the remaining part except the top charging port masonry); the top surface of the top furnace shell 21 close to the center of the dry quenching coke oven is a slope with high inside and low outside, and the charging port masonry and the top furnace shell 21 away from the center of the dry quenching coke oven are both concave; the water seal groove 3 is arranged at the concave structure and is welded and fixed to the top furnace shell 21.

[0046] In this embodiment, the inner lining bricks 11 in the top area are built with silicon nitride combined with silicon carbide bricks with high strength and high wear resistance. The inner lining bricks 11 in the top area near the center of the dry quenching coke oven adopt the structure of "upper facade + lower slope", and the inner lining bricks 11 in the top area are connected by a brick groove and brick tongue structure.

[0047] In this embodiment, the inner lining bricks 12 in the lower area are built with AN clay bricks.

[0048] In this embodiment, the outer lining bricks 13 are built with insulating bricks, and ceramic fiber blankets, waterproof oil paper and refractory heat-insulating castable CL-80 are laid in sequence from the inside to the outside between the outer lining bricks 13 and the charging port furnace shell 2.

[0049] In this embodiment, the height difference of the slope of the top surface of the top furnace shell 2 is 10 mm, and the height difference between the concave structure and the top surface of the dry coke quenching oven is 150 mm.

[0050] In this embodiment, 36 reflux holes 31 are evenly arranged on the inner wall of the water seal groove 3 along the circumferential direction.

[0051] In this embodiment, the joint between the inner lining brick 11 in the top area and the top furnace shell 21 is cast with high-aluminum castable ZCH027, and an expansion space with a height of 80 mm is set between the high-aluminum castable and the top furnace shell 21 and filled with ceramic fiber blanket.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A charging port structure of a pre-storage area of ​​a dry quenching coke oven, comprising a charging port masonry, a charging port furnace shell and a water seal groove; the charging port body of the pre-storage area is composed of the charging port masonry, the charging port furnace shell is arranged outside the charging port masonry, and the top periphery of the charging port of the pre-storage area is provided with a water seal groove; characterized in that, The charging port of the pre-storage area is divided into a top area of ​​the charging port and a lower area of ​​the charging port, and the charging port masonry is composed of an inner lining brick and an outer lining brick, wherein the inner lining brick corresponding to the top area of ​​the charging port is the inner lining brick in the top area, and the inner lining brick corresponding to the lower area of ​​the charging port is the inner lining brick in the lower area; the inner lining bricks in the top area, the inner lining bricks in the lower area and the outer lining bricks are made of different refractory materials; a concave structure is provided on the top periphery of the charging port body of the pre-storage area, and the charging port furnace shell has a matching shape, a water seal groove is seated at the concave structure and is fixedly connected to the charging port furnace shell, and the top surface of the water seal groove is higher than the top surface of the charging port of the pre-storage area.

2. A charging port structure for a pre-storage area of ​​a dry quenching coke oven according to claim 1, characterized in that: The part of the charging port furnace shell located at the top of the charging port of the pre-storage area is the top furnace shell, and the bottom of the water seal groove is fixedly connected to the top furnace shell at the concave structure; the top furnace shell is inclined outward and downward, that is, it has a slope structure; a plurality of reflux holes are opened at the bottom of the inner wall of the water seal groove.

3. A charging port structure for a pre-storage area of ​​a dry quenching coke oven according to claim 2, characterized in that: The height difference of the slope structure is 5 to 20 mm; the reflux holes are evenly spaced along the circumferential direction on the inner wall of the water seal groove.

4. A charging port structure for a pre-storage area of ​​a dry quenching coke oven according to claim 1, characterized in that: The top area of ​​the charging port includes the area of ​​3 to 10 layers of masonry downward from the top surface of the pre-storage area charging port, and the remaining area of ​​the pre-storage area charging port is the lower area of ​​the charging port.

5. The charging port structure of the pre-storage area of ​​the dry quenching coke oven according to claim 1, characterized in that: The side of the inner lining brick in the top area facing the center of the dry quenching coke oven is composed of an upper vertical surface and a lower inclined surface, and the lower inclined surface is inclined from top to bottom toward the inner side of the inner lining brick in the top area; two adjacent inner lining bricks in the top area are bite-connected by a brick groove and brick tongue structure.

6. A charging port structure for a pre-storage area of ​​a dry quenching coke oven according to claim 1, characterized in that: The inner lining bricks in the top area are built with high-strength and high-wear-resistant refractory materials, and the high-strength and high-wear-resistant refractory materials are silicon nitride combined silicon carbide bricks, mullite silicon carbide bricks or wear-resistant castable blocks.

7. A charging port structure for a pre-storage area of ​​a dry quenching coke oven according to claim 1, characterized in that: The inner lining bricks in the lower area are laid with clay bricks or mullite bricks.

8. A charging port structure for a pre-storage area of ​​a dry quenching coke oven according to claim 1, characterized in that: The outer lining bricks are built with low thermal conductivity refractory materials, and the low thermal conductivity refractory materials are insulating bricks or insulating castables.

9. A charging port structure for a pre-storage area of ​​a dry quenching coke oven according to claim 1, characterized in that: The height of the concave structure is 50-300 mm.

10. A charging port structure for a pre-storage area of ​​a dry quenching coke oven according to claim 1, characterized in that: The joint between the inner lining bricks in the top area and the top furnace shell is cast with refractory heat-insulating castables, and an expansion space is provided between the refractory heat-insulating castables and the top furnace shell and filled with ceramic fiber products.

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