Energy-saving and heat-insulating structure of vertical fire channel on coke oven top

Abstract

The present invention relates to an energy-saving and heat-insulating structure for a vertical fire channel on the top of a coke oven, which is arranged in an observation hole or in a vertical channel on the top of the furnace between the observation hole and the vertical fire channel; it comprises an embedded hole seat and a heat-insulating transparent cover; a hole channel 1 is arranged in the middle of the embedded hole seat, a hole channel 2 is arranged in the middle of the heat-insulating transparent cover, the embedded hole seat and the furnace top masonry are connected by a nested structure, the heat-insulating transparent cover is placed in the hole channel 1 of the embedded hole seat, and the axes of the hole channel 1 and the hole channel 2 coincide. The present invention aims at the problem that the existing observation hole has a large amount of heat dissipation, can effectively isolate the connection between the combustion chamber and the external environment, is conducive to the heat preservation of the combustion chamber, reduces the heat energy dissipation at the furnace top observation hole, and improves the furnace top operating environment.

Description

Technical Field

[0001] The invention relates to the technical field of coke ovens, and in particular to an energy-saving and heat-insulating structure of a vertical fire channel on a coke oven top. Background Art

[0002] Modern coke ovens are mainly chamber coke ovens, with combustion chambers and carbonization chambers arranged alternately. In order to adjust and control the heating of the combustion chamber in the longitudinal direction, the combustion chamber of the coke oven is divided into several vertical fire channels. In a coke oven with double-connected heating fire channels, every two adjacent fire channels are connected into a double fire channel, one of which is for ascending airflow and the other for descending airflow. After one operation cycle, the airflow of the ascending fire channel and the airflow of the descending fire channel are exchanged. The double-connected fire channel structure has the advantages of uniform heating, small airflow resistance, and high masonry strength, but it has more contact surfaces for different airflows, a more complex structure, and many brick types.

[0003] Usually, a narrow observation hole (also called a fire-watching hole) is provided in the top area of ​​the coke oven above the vertical fire channel. The top of the vertical fire channel is connected to the observation hole through a vertical passage on the furnace roof. The flame combustion of the vertical fire channel in the combustion chamber is observed through the observation hole, so as to adjust the fuel supply in the combustion chamber, so that the coke oven is heated more evenly in the long direction. An observation hole seat is usually provided at the top of the observation hole, which is closed by an observation hole cover; each vertical fire channel is provided with an observation hole, and the heat of the combustion chamber is transmitted upward along the vertical passage on the furnace roof and the observation hole. Although the observation hole cover is closed, the observation hole cover needs to be removed when observing the flame combustion, measuring the temperature of the vertical fire channel, and placing the adjustment bricks. Due to the large diameter of the observation hole, the heat inside the combustion chamber can easily dissipate to the external environment through the observation hole, which not only causes a waste of energy, but also increases the temperature of the furnace top space, resulting in a poor operating environment of the furnace top space. Summary of the invention

[0004] The present invention provides an energy-saving and heat-insulating structure for a vertical fire channel on a coke oven top. Aiming at the problem of large heat dissipation in existing observation holes, the structure can effectively isolate the connection between a combustion chamber and an external environment, is beneficial to the heat preservation of the combustion chamber, reduces the heat energy dissipation at the observation holes on the furnace top, and improves the operating environment of the furnace top.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The energy-saving and heat-insulating structure of the vertical fire channel on the top of a coke oven is arranged in an observation hole or in a vertical channel on the top of the furnace between the observation hole and the vertical fire channel; it comprises an embedded hole seat and a heat-insulating transparent cover; a hole one is arranged in the middle of the embedded hole seat, a hole two is arranged in the middle of the heat-insulating transparent cover, the embedded hole seat is connected to the masonry of the furnace top by a nested structure, the heat-insulating transparent cover is placed in the hole one of the embedded hole seat, and the axes of the hole one and the hole two coincide.

[0007] The top of the embedded hole seat is provided with an inner concave structure, and the bottom is provided with an outer convex structure, and the inner concave structure and the outer convex structure are respectively used to form a nested structure with the furnace top masonry on the corresponding side.

[0008] The horizontal cross-sectional shape of the inner concave structure and the outer convex structure is a circle or a regular polygon.

[0009] The maximum diameter of the hole one is equal to the diameter of the corresponding observation hole or the vertical channel on the furnace top at the installation location; a reducing structure is provided in the middle or lower part of the hole one; the reducing structure is connected to the top and bottom surfaces of the embedded hole seat respectively through internal tapered sections.

[0010] The heat-insulating transparent cover is a pancake-shaped structure, and its minimum cross-sectional area is smaller than the minimum cross-sectional area of ​​the first hole in the embedded hole seat.

[0011] An expansion structure is arranged in the middle of the outer side of the thermal insulation transparent cover, and the expansion structure is connected to the top and bottom surfaces of the thermal insulation transparent cover respectively through external conical sections, and the external conical sections match the inclined surface angle of the internal conical sections in the embedded hole seat.

[0012] The bottom surface of the heat-insulating transparent cover is provided with an annular groove.

[0013] The embedded hole seat is made of silicon or aluminum refractory material.

[0014] The heat-insulating cover is made of silicon-alumina refractory bricks, refractory blocks, refractory castables or high-temperature resistant metals.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) Through the cooperation of the embedded hole seat 1 and the thermal insulation cover 2, the thermal insulation performance of the vertical fire channel in the furnace top area is effectively improved, the heat loss at the observation hole is reduced, and the operating environment of the furnace top is improved;

[0017] 2) During daily production, the embedded hole seat 1 is closed by the heat-insulating transparent cover 2; after removing the heat-insulating transparent cover 2, the bottom of the combustion chamber can be adjusted for production to improve the uniformity of the longitudinal distribution of the airflow;

[0018] 3) It does not affect the normal temperature measurement of the furnace top, or the observation of the combustion conditions in the combustion chamber from the furnace top. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The invention is a schematic diagram of an energy-saving and heat-insulating structure of a vertical fire channel on a coke oven roof.

[0020] Figure 2 It is a front view of the embedded hole seat described in the present invention.

[0021] Figure 3 yes Figure 2 Top view of the .

[0022] Figure 4 It is a front view of the thermal insulation transparent cover of the present invention.

[0023] Figure 5 yes Figure 4 Top view of the .

[0024] In the figure: 1. Embedded hole seat 11. Hole channel 1 10. Reduced diameter structure 12. Inner concave structure 13. Outer convex structure 2. Insulated cover 21. Expanded diameter structure 22. Hole channel 2 23. Annular groove 3. Furnace top masonry DETAILED DESCRIPTION

[0025] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0026] like Figure 1 As shown, an energy-saving and heat-insulating structure of a vertical fire channel on a coke oven roof of the present invention is arranged in an observation hole or in a vertical channel on the furnace roof between the observation hole and the vertical fire channel; it comprises an embedded hole seat 1 and a heat-insulating transparent cover 2; a hole channel 11 is arranged in the middle of the embedded hole seat 1, a hole channel 22 is arranged in the middle of the heat-insulating transparent cover 2, the embedded hole seat 1 is connected to the furnace roof masonry 3 by a nested structure, the heat-insulating transparent cover 2 is placed in the hole channel 11 of the embedded hole seat 1, and the axes of the hole channel 11 and the hole channel 22 coincide.

[0027] like Figure 2 , Figure 3 As shown, the top of the embedded hole seat 1 is provided with an inner concave structure 12, and the bottom is provided with an outer convex structure 13, and the inner concave structure 12 and the outer convex structure 13 are respectively used to form a nested structure with the furnace roof masonry 3 on the corresponding side.

[0028] The horizontal cross-sectional shapes of the inner concave structure 12 and the outer convex structure 13 are circular or regular polygonal.

[0029] The maximum diameter of the hole 11 is equal to the diameter of the corresponding observation hole or the vertical channel on the furnace top at the installation location; a reducing structure 110 is provided in the middle or lower part of the hole 11; the reducing structure 110 is connected to the top and bottom surfaces of the embedded hole seat 1 respectively through internal conical sections.

[0030] like Figure 4 , Figure 5 As shown, the heat-insulating cover 2 is a pancake-shaped structure, and its minimum cross-sectional area is smaller than the minimum cross-sectional area of ​​the channel 11 in the embedded hole seat 1.

[0031] The middle part of the outer side of the thermal insulation cover 2 is provided with an expansion structure 21, which is connected to the top and bottom surfaces of the thermal insulation cover 2 through external conical sections respectively. The external conical sections match the inclined surface angle of the internal conical sections in the embedded hole seat 1.

[0032] The bottom surface of the heat-insulating transparent cover 2 is provided with an annular groove 23 .

[0033] The embedded hole seat 1 is made of silicon or aluminum refractory material.

[0034] The thermal insulation cover 2 is made of silicon-alumina refractory bricks, refractory blocks, refractory castables or high-temperature resistant metals.

[0035] In the energy-saving and heat-insulating structure of the vertical fire channel on the top of a coke oven described in the present invention, an embedded hole seat 1 is embedded in the furnace roof masonry 3 on the upper part of the vertical fire channel, and a hole 11 in the middle thereof is connected with an observation hole or a vertical channel on the furnace roof; the embedded hole seat 1 has a rectangular shape and is built in the furnace roof masonry 3 during the construction of the coke oven top area; a hole 11 is provided in the central part of the embedded hole seat 1 along the vertical direction, and a reduced diameter structure is provided on the hole 11 for realizing the positioning and fixation of the heat-insulating cover 2.

[0036] The bottom of the thermal insulation cover 2 is provided with an annular groove 23, which is convenient for placing the thermal insulation cover 2 into the embedded hole seat 1 or taking it out from the embedded hole seat 1 by means of a hook or other tools; the thermal insulation cover 2 is usually placed in the embedded hole seat 1, which has a blocking effect on the heat transmitted from the self-supporting fire channel; when measuring the temperature through the observation hole, only the observation hole cover needs to be removed, and the thermal insulation cover 2 does not affect the operation of the infrared thermometer, and because the diameter of the hole 22 is smaller than the diameter of the observation hole, it can also reduce the heat dissipation during temperature measurement. The thermal insulation cover 2 is only taken out when the hook needs to be inserted to place the adjustment brick for temperature adjustment.

[0037] 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. An energy-saving and heat-insulating structure for a vertical fire channel on a coke oven roof, arranged in an observation hole or in a vertical channel on the roof between the observation hole and the vertical fire channel; an observation hole seat is arranged on the top of the observation hole, which is closed by an observation hole cover; characterized in that: The energy-saving and heat-insulating structure of the vertical fire channel on the top of a coke oven comprises an embedded hole seat and a heat-insulating cover; a hole channel 1 is arranged in the middle of the embedded hole seat, a hole channel 2 is arranged in the middle of the heat-insulating cover, the embedded hole seat is connected to the furnace top masonry by a nested structure, the heat-insulating cover is placed in the hole channel 1 of the embedded hole seat, and the axes of the hole channel 1 and the hole channel 2 coincide; an annular groove is arranged on the bottom surface of the heat-insulating cover, which is used to place the heat-insulating cover in the embedded hole seat or take it out from the embedded hole seat by a hook.

2. The energy-saving and heat-insulating structure of the vertical flue at the top of a coke oven according to claim 1, characterized in that: The top of the embedded hole seat is provided with an inner concave structure, and the bottom is provided with an outer convex structure, and the inner concave structure and the outer convex structure are respectively used to form a nested structure with the furnace top masonry on the corresponding side.

3. The energy-saving and heat-insulating structure of the vertical flue at the top of a coke oven according to claim 2, characterized in that: The horizontal cross-sectional shape of the inner concave structure and the outer convex structure is a circle or a regular polygon.

4. The energy-saving and heat-insulating structure of the vertical flue at the top of a coke oven according to claim 1, characterized in that: The maximum diameter of the hole one is equal to the diameter of the corresponding observation hole or the vertical channel on the furnace top at the installation location; a reducing structure is provided in the middle or lower part of the hole one; the reducing structure is connected to the top and bottom surfaces of the embedded hole seat respectively through internal tapered sections.

5. The energy-saving and heat-insulating structure of the vertical flue at the top of a coke oven according to claim 1, characterized in that: The heat-insulating transparent cover is a pancake-shaped structure, and its minimum cross-sectional area is smaller than the minimum cross-sectional area of ​​the first hole in the embedded hole seat.

6. The energy-saving and heat-insulating structure of the vertical flue at the top of a coke oven according to claim 1, characterized in that: An expansion structure is arranged in the middle of the outer side of the thermal insulation transparent cover, and the expansion structure is connected to the top and bottom surfaces of the thermal insulation transparent cover respectively through external conical sections, and the external conical sections match the inclined surface angle of the internal conical sections in the embedded hole seat.

7. A coke oven top vertical flue energy-saving and heat-insulating structure according to claim 1, 2 or 4, characterized in that: The embedded hole seat is made of silicon or aluminum refractory material.

8. A coke oven top vertical flue energy-saving and heat-insulating structure according to claim 1, 5 or 6, characterized in that: The thermal insulation cover is made of refractory blocks, refractory castables or high temperature resistant metal.

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