A coke oven small flue air intake distribution and adjustment structure and method

Abstract

The present invention relates to a coke oven small flue air intake distribution and adjustment structure and method. The coke oven's regenerator is a compartmentalized regenerator. The adjustment structure includes a grate plate adjustment structure and a grate brick adjustment structure disposed within the coke oven. The grate plate adjustment structure is disposed at one or both ends of the regenerator corresponding to the engine side and the coke side, while the grate brick adjustment structure is disposed at the remaining portions of the regenerator. The present invention employs a combination of downward and side adjustment adjustment methods, enabling convenient, rapid, precise, and effective adjustment of the gas and / or air distribution entering each compartmentalized regenerator. This improves the coke oven's heating system, enhances the uniform maturity of coke along the length of the coke oven, and extends the coke oven's service life, while simultaneously achieving energy conservation.

Description

Technical Field

[0001] The present invention relates to the technical field of coke ovens, and in particular to a coke oven small flue air intake distribution and adjustment structure and method. Background Art

[0002] Currently, coke oven regenerators generally adopt a grid structure along the machine-side-coke-side direction (longitudinal direction) to precisely regulate and control the flow of air and / or gas entering each vertical fire channel of the combustion chamber. The coke oven small flue is a channel connecting the coke oven regenerator and the exhaust gas switch. It is located below the regenerator. Its main function is to introduce and distribute air and / or gas to each grid regenerator, and to collect and export the hot exhaust gas generated by combustion to the flue. The distribution ratio of air and / or gas entering each grid regenerator through the small flue directly affects the heating system during coke oven production and the uniformity of the longitudinal heating of the coke oven. It also determines the quality of the coke produced and the service life of the coke oven itself. Therefore, under different heating systems, accurate and timely adjustments need to be made according to the actual production conditions, usually using two methods: downward adjustment or side adjustment.

[0003] In downward-regulating coke ovens, grate bricks with adjustment holes and adjustment bricks are commonly used to regulate the distribution of gas entering each compartmentalized regenerator (e.g., "A Method and Furnace Structure for Adjusting Heating Uniformity in the Length of a Coke Oven from Below" disclosed in Chinese Patent Application Publication No. CN 102146293 A). When using downward-regulating methods, adjustment bricks must be removed or inserted in the coke oven basement; this operation is difficult due to the high distance between the grate brick layer and the coke oven basement. Furthermore, the size of each adjustment brick is fixed, with only a few fixed values that can be adjusted. Furthermore, during operation, it is impossible to ensure that adjacent adjustment bricks fit tightly together, resulting in poor adjustment accuracy.

[0004] Some large coke ovens use a side-adjustment system, where grate plates can be pulled out from the side of the regenerator. While this method is simple and precise, adjusting the opening of the grate plates below the inner compartmentalized regenerator requires the entire plate to be removed. This significantly increases the risk of collision between the grate plates and the outer regenerator partition wall tiles during operation, further increasing the possibility of damage to the regenerator partition wall tiles and grate plates. Furthermore, adjustments must only be made when the corresponding regenerator is experiencing downward airflow, and must be completed within a single exchange cycle; otherwise, coke oven production will be impacted, resulting in strict time constraints. Summary of the Invention

[0005] The present invention provides a coke oven small flue air intake distribution and adjustment structure and method, which adopts a combination of downward adjustment and side adjustment adjustment methods, and can conveniently, quickly, accurately and effectively adjust the distribution amount of gas and / or air entering each grid heat storage chamber, so as to improve the coke oven heating system, improve the uniform maturity of coke along the length of the coke oven and the service life of the coke oven, and achieve the purpose of energy saving at the same time.

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

[0007] A coke oven small flue air intake distribution and adjustment structure, wherein the coke oven's regenerator is a compartmented regenerator; the adjustment structure comprises a grate plate adjustment structure and a grate brick adjustment structure arranged in the same coke oven; the grate plate adjustment structure is arranged at one or both ends of the regenerator corresponding to the machine side and the coke side, and the grate brick adjustment structure is arranged at the remaining parts of the regenerator.

[0008] The grate plate adjustment structure is arranged on the machine side or the coke side. Calculated from the machine side burner head or the coke side burner head, the number of compartmentalized heat storage chambers adjusted by the grate plate adjustment structure is at least 2 and at most 1 / 2 of the total number of compartmentalized heat storage chambers.

[0009] The grate plate adjustment structure is arranged on the machine side and the coke side. Calculated from the machine side furnace head and the coke side furnace head, the number of grid regenerators adjusted by the grate plate adjustment structure is at least 2 respectively.

[0010] The grate brick adjustment structure consists of grate bricks and adjustment bricks. The grate bricks are arranged between the small flue and the grid heat storage chamber. Grate brick adjustment holes are arranged on the grate bricks. The adjustment bricks extend from the coke oven basement and are placed in the grate brick adjustment holes.

[0011] A grate brick adjusting hole is arranged in the middle of the grate brick, and a plurality of grate brick circular holes are arranged on the grate bricks outside the grate brick adjusting hole.

[0012] The grate plate adjustment structure is composed of a pull-out grate plate arranged between the small flue and the compartmented heat storage chamber. The grate plate is provided with a grate plate adjustment hole, and the opening cross-sectional area of the grate plate adjustment hole can be adjusted by the grate plate adjustment plate.

[0013] The grate brick adjustment structure and the grate plate adjustment structure are elastically sealed and connected via a bite structure between the grate bricks and the grate plates.

[0014] The interlocking structure consists of a groove provided at the connection end of the grate brick and a sealing member provided at the connection end of the grate plate; the grate brick is provided with a groove at the connection corresponding to the grate plate, the corresponding end of the grate plate extends into the groove, and the extended end and the groove are sealed and connected by a sealing member; the sealing member is composed of ceramic fiber felt and petroleum asphalt felt paper arranged on the outside of the grate plate in sequence from the inside to the outside.

[0015] A method for distributing and regulating the air intake volume of a small flue of a coke oven adopts a combination of downward regulation and side regulation to regulate the flow of air and / or gas distributed from the small flue to each compartmentalized regenerator; the downward regulation method is adopted for the portion corresponding to a grate brick regulation structure, i.e., adjustment is performed by increasing or decreasing the number of regulation bricks at the grate brick regulation holes through operation from the coke oven basement; the side regulation method is adopted for the portion corresponding to a grate plate regulation structure, i.e., grate plates are withdrawn from the machine-side burner head and / or the coke-side burner head of the regenerator, and the opening cross-sectional area of the grate plate regulation holes is adjusted using a grate plate regulation plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) A combination of downward and side-adjustment is used to precisely regulate the flow of air and / or gas distributed from the small flue to each compartmentalized regenerator along the length of the coke oven, ensuring the horizontal uniformity of the coke oven and thus ensuring uniform maturation of the coke along the length of the coke oven;

[0018] 2) Easy adjustment, which can shorten the operation time and minimize the impact of the adjustment operation on the normal production of the coke oven;

[0019] 3) Promote the improvement of the heating system during coke oven production, increase the service life of the coke oven body, and achieve the purpose of energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the coke oven small flue air intake distribution and adjustment structure of the present invention. Figure 1 .

[0021] Figure 2 This is a schematic diagram of the structure of the coke oven small flue air intake distribution and adjustment structure of the present invention. Figure 2 .

[0022] Figure 3 It is a schematic diagram of the connection between the grate bricks and the grate plates of the present invention.

[0023] Figure: Ⅰ. Grate brick adjustment structure Ⅱ. Grate plate adjustment structure 1. Grate plate 2. Grate brick 3. Grate plate adjustment plate 4. Grate plate adjustment hole 5. Adjustment brick 6. Grate brick adjustment hole 7. Grate brick circular hole 8. Ceramic fiber felt 9. Petroleum asphalt felt paper 10. Groove DETAILED DESCRIPTION

[0024] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0025] like Figure 1 、 Figure 2As shown, the present invention relates to a coke oven small flue air intake distribution and adjustment structure, wherein the coke oven's regenerator is a compartmented regenerator; the adjustment structure comprises a grate plate adjustment structure II and a grate brick adjustment structure I arranged in the same coke oven; the grate plate adjustment structure II is arranged at one or both ends of the regenerator corresponding to the machine side and the coke side, and the grate brick adjustment structure I is arranged at the rest of the regenerator.

[0026] like Figure 2 As shown, the grate plate adjustment structure II is arranged on the machine side or the coke side. Calculated from the machine side furnace head or the coke side furnace head, the number of compartmentalized regenerators adjusted by the grate plate adjustment structure II is at least 2 and at most 1 / 2 of the total number of compartmentalized regenerators.

[0027] like Figure 1 As shown, the grate plate adjustment structure II is arranged on the machine side and the coke side. Calculated from the machine side furnace head and the coke side furnace head, the number of grid regenerators adjusted by the grate plate adjustment structure II is at least 2 respectively.

[0028] The grate brick adjustment structure I consists of a grate brick 2 and an adjustment brick 5. The grate brick 2 is arranged between the small flue and the grid heat storage chamber. The grate brick 2 is provided with a grate brick adjustment hole 6. The adjustment brick 5 extends from the coke oven basement and is placed in the grate brick adjustment hole 6.

[0029] A grate brick adjusting hole 6 is provided in the middle of the grate brick 2 , and a plurality of grate brick circular holes 7 are provided on the grate brick 2 outside the grate brick adjusting hole 6 .

[0030] The grate plate adjustment structure II is composed of a pull-out grate plate 1 arranged between the small flue and the compartmented heat storage chamber. The grate plate 1 is provided with a grate plate adjustment hole 4, and the opening cross-sectional area of the grate plate adjustment hole 4 can be adjusted through the grate plate adjustment plate 3.

[0031] The grate brick adjustment structure I and the grate plate adjustment structure II are elastically sealed together through the bite structure between the grate brick 2 and the grate plate 1 .

[0032] like Figure 3 As shown, the interlocking structure is composed of a groove 10 provided at the connecting end of the grate brick 2 and a sealing member provided at the connecting end of the grate plate 1; the grate brick 2 is provided with a groove 10 at the connection corresponding to the grate plate 1, the corresponding end of the grate plate 1 extends into the groove 10, and the extending end and the groove 10 are sealed and connected by a sealing member; the sealing member is composed of a ceramic fiber felt 8 and a petroleum asphalt felt paper 9 which are sequentially arranged on the outer side of the grate plate 1 from the inside to the outside.

[0033] A method for distributing and regulating the air intake volume of a small flue of a coke oven adopts a combination of downward regulation and side regulation to regulate the flow of air and / or gas distributed from the small flue to each compartmentalized regenerator; the downward regulation method is adopted for the portion corresponding to the provision of a grate brick regulation structure I, i.e., adjustment is performed by increasing or decreasing the number of regulation bricks 5 at the grate brick regulation holes 6 through operation from the coke oven basement; the side regulation method is adopted for the portion corresponding to the provision of a grate plate regulation structure II, i.e., adjustment is performed by withdrawing a grate plate 1 from the machine-side burner head and / or the coke-side burner head of the regenerator and adjusting the opening cross-sectional area of the grate plate regulation holes 4 using a grate plate regulation plate 3.

[0034] The present invention adopts a combination of downward and side adjustment. When the grate plate adjustment structure II is only installed on one side, near the machine-side furnace head or the coke-side furnace head, the grate brick adjustment structure I is installed on the opposite side. When the grate plate adjustment structure II is installed on both sides, near the machine-side furnace head and the coke-side furnace head, the grate brick adjustment structure I is installed in the middle of the coke oven.

[0035] A bite structure is used at the connection boundary between the grate brick adjustment structure I and the grate plate adjustment structure II to achieve a sealed elastic connection, that is, a groove 10 of a certain depth is opened on one side of the grate brick 2 corresponding to the connection end of the grate plate 1, and one end of the grate plate 1 connected to the grate brick 2 is wrapped with elastic ceramic fiber felt 8, and the outermost layer is wrapped with petroleum asphalt felt paper 9.

[0036] The grate brick adjustment structure I is preferably in the form of adjustable grate bricks, that is, fixed diffusion type grate brick circular holes 7 are opened around the grate bricks 2, and a grate brick adjustment hole 6 is provided in the middle. Adjustment is achieved by adding or removing the adjustment bricks 5 at the grate brick adjustment hole 6.

[0037] In the grate plate adjustment structure II, a plurality of grate plate adjustment holes 4 are provided on the grate plate 1 along the length of the coke oven corresponding to each compartmentalized heat storage chamber. Adjustment is achieved by pulling out the grate plate 1 and then adjusting the opening cross-sectional area of the grate plate adjustment hole 4 with the grate plate adjustment plate 3.

[0038] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A coke oven small flue air intake distribution and adjustment structure, wherein the coke oven regenerator is a compartmented regenerator; characterized in that: The regulating structure includes a grate plate regulating structure and a grate brick regulating structure provided in the same coke oven; the grate plate regulating structure is provided at one or both ends of the regenerator corresponding to the machine side and the coke side, and the grate brick regulating structure is provided at the rest of the regenerator; The grate brick adjustment structure is composed of grate bricks and adjustment bricks. The grate bricks are arranged between the small flue and the compartmented heat storage chamber. The grate bricks are provided with grate brick adjustment holes. The adjustment bricks extend from the coke oven basement and are placed in the grate brick adjustment holes. The grate plate adjustment structure is composed of a pull-out grate plate arranged between the small flue and the compartmented heat storage chamber. The grate plate is provided with a grate plate adjustment hole, and the opening cross-sectional area of the grate plate adjustment hole can be adjusted by the grate plate adjustment plate.

2. A coke oven small flue air intake distribution and adjustment structure according to claim 1, characterized in that: The grate plate adjustment structure is arranged on the machine side or the coke side. Calculated from the machine side burner head or the coke side burner head, the number of compartmentalized heat storage chambers adjusted by the grate plate adjustment structure is at least 2 and at most 1 / 2 of the total number of compartmentalized heat storage chambers.

3. The coke oven small flue air intake distribution and adjustment structure according to claim 1, characterized in that: The grate plate adjustment structure is arranged on the machine side and the coke side. Calculated from the machine side furnace head and the coke side furnace head, the number of grid regenerators adjusted by the grate plate adjustment structure is at least 2 respectively.

4. The coke oven small flue air intake distribution and adjustment structure according to claim 1, characterized in that: A grate brick adjusting hole is arranged in the middle of the grate brick, and a plurality of grate brick circular holes are arranged on the grate bricks outside the grate brick adjusting hole.

5. The coke oven small flue air intake distribution and adjustment structure according to claim 1, characterized in that: The grate brick adjustment structure and the grate plate adjustment structure are elastically sealed and connected via a bite structure between the grate bricks and the grate plates.

6. A coke oven small flue air intake distribution and adjustment structure according to claim 5, characterized in that: The interlocking structure consists of a groove provided at the connection end of the grate brick and a sealing member provided at the connection end of the grate plate; the grate brick is provided with a groove at the connection corresponding to the grate plate, the corresponding end of the grate plate extends into the groove, and the extended end and the groove are sealed and connected by a sealing member; the sealing member is composed of ceramic fiber felt and petroleum asphalt felt paper arranged on the outside of the grate plate in sequence from the inside to the outside.

7. A method for distributing and regulating the air intake of a small flue of a coke oven based on the structure of any one of claims 1 to 6, characterized in that: A combination of downward and side adjustments is used to adjust the flow of air and / or gas distributed from the small flue to each grid heat storage chamber; the downward adjustment method is adopted for the parts where the grate brick adjustment structure is provided, that is, the number of adjustment bricks at the grate brick adjustment holes is increased or decreased by operating from the coke oven basement; the side adjustment method is adopted for the parts where the grate plate adjustment structure is provided, that is, the grate plate is pulled out from the machine-side burner and / or coke-side burner of the heat storage chamber, and the opening cross-sectional area of the grate plate adjustment hole is adjusted with the grate plate adjustment plate.

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